FAX500/550

SERVICE MANUAL

Throughout this manual, the machines are

referred to as follows.
Type A: FAX500
Type B: FAX550
Lithium Batteries (Memory Back-up)
CAUTION:
The danger of explosion exists if a battery of this type is incorrectly replaced.
Replace only with the same or an equivalent type recommended by the
manufacturer. Discard used batteries in accordance with the manufacturer’s
instructions.
 CONTENTS

1. OVERALL MACHINE INFORMATION

1.1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . 1-1

1.2. FEATURES . . . . . . . . . . . . . . . . . . . . . 1-2

1.3. COMPONENT LAYOUT . . . . . . . . . . . . . . . . 1-5

1.3.1. Mechanical Components . . . . . . . . . . . . . . 1-5
1.3.2. Drive Components . . . . . . . . . . . . . . . . . 1-6
1.3.3. Electrical Components . . . . . . . . . . . . . . . 1-7

1.4. OVERALL SYSTEM CONTROL . . . . . . . . . . . . . 1-9

1.5. VIDEO DATA PATH . . . . . . . . . . . . . . . . . . 1-10

1.5.1. Transmission . . . . . . . . . . . . . . . . . . . 1-10
1.5.2. Reception . . . . . . . . . . . . . . . . . . . . 1-10

1.6. POWER DISTRIBUTION . . . . . . . . . . . . . . . . 1-11

1.6.1. Distribution Diagram . . . . . . . . . . . . . . . . 1-11
1.6.2. Memory Back-up Circuit . . . . . . . . . . . . . . . 1-12

2. DETAILED SECTION DESCRIPTIONS

2.1. SCANNER . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1.1. Mechanisms . . . . . . . . . . . . . . . . . . . 2-1
1. Document Detection . . . . . . . . . . . . . . . . . 2-1
2. Pick-up and Feed . . . . . . . . . . . . . . . . . . 2-2
2.1.2. Video Data Processing . . . . . . . . . . . . . . . 2-3

2.2. PRINTER . . . . . . . . . . . . . . . . . . . . . . 2-4

2.2.1. Mechanisms . . . . . . . . . . . . . . . . . . . 2-4
1. Paper Feed . . . . . . . . . . . . . . . . . . . . 2-4
2. Cutting . . . . . . . . . . . . . . . . . . . . . . 2-5
3. Cutter Jam Detection . . . . . . . . . . . . . . . . 2-5
2.2.2. Circuits . . . . . . . . . . . . . . . . . . . . . 2-6
1. Video Data Processing . . . . . . . . . . . . . . . . 2-6
2. Thermal Head . . . . . . . . . . . . . . . . . . . 2-6
2.3. PCBs AND THEIR FUNCTIONS . . . . . . . . . . . . . 2-7
2.3.1. FCU . . . . . . . . . . . . . . . . . . . . . . 2-7
2.3.2. MBU . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3.3. SBU . . . . . . . . . . . . . . . . . . . . . . 2-10
2.3.4. OPU . . . . . . . . . . . . . . . . . . . . . . 2-10
2.3.5. NCU . . . . . . . . . . . . . . . . . . . . . . 2-11
1. PCB Block Diagram . . . . . . . . . . . . . . . . . 2-11
2. Signal and Jumper Settings . . . . . . . . . . . . . . 2-12
2.3.6. PSU . . . . . . . . . . . . . . . . . . . . . . 2-13
3. INSTALLATION

3.1. CONNECTING UP THE MACHINE . . . . . . . . . . . . 3-1

3.2. INITIAL PROGRAMMING . . . . . . . . . . . . . . . 3-2

3.3. LANGUAGE ROM SELECTION . . . . . . . . . . . . . 3-2

4. SERVICE TABLES AND PROCEDURES

4.1. SERVICE LEVEL FUNCTIONS . . . . . . . . . . . . . 4-1

4.1.1. Bit Switch Programming (Function 91) . . . . . . . . . 4-1
4.1.2. System Parameter List (Function 92) . . . . . . . . . . 4-2
4.1.3. Error Code Display (Function 93) . . . . . . . . . . . 4-2
4.1.4. Service Monitor (Function 93) . . . . . . . . . . . . . 4-2
4.1.5. Protocol Dump (Function 94) . . . . . . . . . . . . . 4-2
4.1.6. RAM Display/Rewrite (Function 95) . . . . . . . . . . 4-3
4.1.7. RAM Dump (Function 95) . . . . . . . . . . . . . . 4-3
4.1.8. NCU Parameters (Function 96) . . . . . . . . . . . . 4-4
4.1.9. ADF Test (Function 97) . . . . . . . . . . . . . . . 4-4
4.1.10. Xenon Lamp Test (Function 97) . . . . . . . . . . . 4-5
4.1.11. DTMF Tone Test (Function 97) . . . . . . . . . . . . 4-5
4.1.12. Printer Test Patterns (Function 97) . . . . . . . . . . 4-6
4.1.13. Operation Panel Test (Function 97) . . . . . . . . . . 4-6
4.1.14. Modem Test (Function 97) . . . . . . . . . . . . . 4-7
4.1.15. Ringer Test (Function 97) . . . . . . . . . . . . . . 4-8
4.1.16. Buzzer Test (Function 97) . . . . . . . . . . . . . . 4-8
4.1.17. Sensor Initialization (Function 97) . . . . . . . . . . . 4-8
4.1.18. Serial Number (Function 98) . . . . . . . . . . . . . 4-9
4.1.19. Pulse Width (Function 99) . . . . . . . . . . . . . . 4-9
4.1.20. Bypassing Restricted Access . . . . . . . . . . . . 4-10
4.1.21. Printing all Memory Files . . . . . . . . . . . . . . 4-10
4.1.22. CSI Programming . . . . . . . . . . . . . . . . . 4-11
4.1.23. Telephone Line Type Selection . . . . . . . . . . . . 4-11
4.2. BIT SWITCHES . . . . . . . . . . . . . . . . . . . . 4-12

4.3. NCU PARAMETERS . . . . . . . . . . . . . . . . . . 4-24

4.4. DEDICATED TRANSMISSION PARAMETERS . . . . . . . 4-39

4.4.1. Programming Procedure . . . . . . . . . . . . . . 4-39
4.4.2. Parameters . . . . . . . . . . . . . . . . . . . . 4-40

4.5. USEFUL RAM ADDRESSES . . . . . . . . . . . . . . 4-42

4.6. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . . . . 4-44

5. REPLACEMENT AND ADJUSTMENT

5.1. COVERS . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1.1. Top Cover . . . . . . . . . . . . . . . . . . . . 5-1
5.1.2. Front and Rear Covers . . . . . . . . . . . . . . . 5-1

5.2. SCANNER . . . . . . . . . . . . . . . . . . . . . . 5-2

5.2.1. ADF Clutch and Pick-up and Feed Rollers . . . . . . . . 5-2
5.2.2. Separation Roller . . . . . . . . . . . . . . . . . 5-3
5.2.3. Tx Motor . . . . . . . . . . . . . . . . . . . . 5-4
5.2.4. Timing Belt Tension Adjustments . . . . . . . . . . . 5-4
5.2.5. Xenon Lamp . . . . . . . . . . . . . . . . . . . 5-5
5.2.6. Xenon Lamp Driver . . . . . . . . . . . . . . . . 5-5
5.2.7. SBU . . . . . . . . . . . . . . . . . . . . . . 5-6
5.2.8. SBU Adjustments . . . . . . . . . . . . . . . . . 5-6

5.3. PRINTER . . . . . . . . . . . . . . . . . . . . . . 5-10

5.3.1. Rx Motor . . . . . . . . . . . . . . . . . . . . 5-10
5.3.2. Thermal Head . . . . . . . . . . . . . . . . . . 5-10
5.3.3. Cutter . . . . . . . . . . . . . . . . . . . . . . 5-11

5.4. PCBs . . . . . . . . . . . . . . . . . . . . . . . . 5-12

5.4.1. FCU and Battery . . . . . . . . . . . . . . . . . 5-12
5.4.2. Memory . . . . . . . . . . . . . . . . . . . . . 5-12
5.4.3. MBU . . . . . . . . . . . . . . . . . . . . . . 5-13
5.4.4. PSU and NCU . . . . . . . . . . . . . . . . . . 5-14
5.4.5. Operation Panel . . . . . . . . . . . . . . . . . . 5-14
6. TROUBLESHOOTING

6.1. COPY QUALITY TROUBLESHOOTING . . . . . . . . . . 6-1

6.1.1. Received Copies . . . . . . . . . . . . . . . . . . 6-1
6.1.2. Copies made in Copy Mode . . . . . . . . . . . . . 6-1

6.2. MECHANICAL PROBLEMS . . . . . . . . . . . . . . . 6-2

6.2.1. ADF/Scanner . . . . . . . . . . . . . . . . . . . 6-2
6.2.2. Printer . . . . . . . . . . . . . . . . . . . . . . 6-5

6.3. ERROR CODES . . . . . . . . . . . . . . . . . . . 6-7

6.4. ELECTRICAL COMPONENT DEFECTS . . . . . . . . . . 6-12

6.4.1. Defective Sensor Table . . . . . . . . . . . . . . . 6-12
OVERALL MACHINE INFORMATION November 30th, 1991
SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1
1.1. SPECIFICATIONS
Type Protocol
Desktop transceiver Group 3 with ECM
Circuit Data Rate
PSTN, PABX 9600/7200/4800/2400 bps; automatic fallback
Connection I/O Rate
Direct couple With ECM: 0 ms/line
Without ECM: 5, 10, 20, or 40 ms/line
Document Size
Length: 105 - 1200 mm Transmission Time
[4.13 - 47.2 ins] 10 s at 9600 bps (G3 ECM using memory)
Up to 100 m [328 ft] after adjustment for a CCITT # 1 test document (Slerexe let-
Width: 148 - 216 mm ter) using standard resolution
[5.8 - 8.5 ins]
Thickness: 0.05 to 0.15 mm Printing System
[2 to 6 mils] Thermal printing, automatic cutter

Document Feed Paper Size

Automatic feed, face down 216 mm (A4) x 100 m [8.5 ins x 328 ft]

ADF Capacity Maximum Printout Width

30 sheets (using 80 g/m2 paper) 210 mm [8.3 ins]

Scanning Method Maximum Printer Resolution

Flat bed, with CCD Main scan: 8 dots per mm [203 dpi]
Sub scan: 15.4 lines/mm [392 lpi]
Maximum Scan Width
216 mm [8.5 ins] ± 1% Power Supply
220 - 240 Vac, 50 Hz
Scan Resolution
Main scan: 8 dots/mm [203 dpi] Power Consumption (Base Machine Only)
Sub scan: Standby: 13 ± 5 W
Standard - 3.85 lines/mm [98 lpi] Transmit: 29 ± 5 W
Detail - 7.7 lines/mm [196 lpi] Receive: 22 ± 5 W
Fine - 15.4 lines/mm [392 lpi] Copying: 41 ± 7 W

Memory Capacity Operating Environment

ECM: 128 kbytes (double buffer) Temperature: 17 - 28 °C [63 - 82 °F]
SAF: Type A - 128 kbytes (7 pages), shared Humidity: 30 - 85 %Rh
w/ ECM Dimensions (W x D x H)
Type B - 256 kbytes (14 pages), with 325 x 388 x 174 mm [12.8 x 15.3 x 6.9 ins]
optional extra 1 Mbyte or Excluding handset, trays, and optional units
2 Mbytes (max 71 or 128
pages respectively) Weight
10 kg [22 lbs]
Compression
MH, MR, EFC, MMR, SSC
Storage to SAF memory for tx: MH
MMR only with ECM
Modulation
V.29 (QAM), V.27ter (PHM), V.21 (FM)

1-1
November 30th, 1991 OVERALL MACHINE INFORMATION
FEATURES

1.2. FEATURES
KEY: Communication Features -
O = Used, X = Not Used, User Selectable
A = Type A only,
Action as a transfer broadcaster X
B = Type B and Type B with optional mem-
AI Redial O
ory only,
C = Type B with optional memory only, Alternative Destination O
G = Not used in Germany, Answering machine X
S = Service mode in some countries Authorized Reception O
Auto-answer delay time X
Equipment Auto dialling (pulse or DTMF) O
ADF O Auto Document B
Bar code reader X Automatic Voice Message X
Built-in handset X Auto-note X
Cabinet X Batch Transmission (max 5 files) C
Connection for ans. machine X Broadcasting O
Connection for handset O Chain Dialling O
Cutter O Confidential ID Override O
Handset O Confidential Transmission O
Hard disk X Forwarding (4 stations) C
Magnetic card reader X Free Polling O
Manual feed mechanism X Groups (7 groups) O
Marker X Hold O (G)
Microphone X Immediate Redialling O
Monitor speaker O Immediate transmission (this is
O
Remaining memory indicator O the default mode for Type A)
Speakerphone X Keystroke Programs O
Mailbox C
Video Processing Features Memory transmission (this is the
O
default mode for Type B)
Contrast O
Notify X
Halftone (Basic & Error Diffusion) O
On Hook Dial O (G)
MTF O
Page Count O
Reduction O
Personal Codes O
Resolution O
Personal Codes with Conf ID C
Smoothing - 8 x 3.85 to 8 x 7.7 O
Polling Reception O
Smoothing - 8 x 7.7 to 8 x 15.4 X
Polling Transmission O
Quick Dial (Type A: 15, Type B: 30)
Communication Features - Auto Reception modes (Fax, Tel, Auto) O
Automatic fallback O Reduction X
Automatic redialling O Remote control features O
Confidential reception C Remote Transfer B
Dual Access B Restricted Access (10 codes,
Substitute reception O O
without cards)
Transmission Reserve A Secured Polling O
Secured Polling with Stored ID
O
Override

1-2
OVERALL MACHINE INFORMATION November 30th, 1991
FEATURES

Send Later O Language Selection O

Silent ringing detection
Speed Dial (Type A: 50, Type B: 100)
X LCD contrast control
Memory Lock
Service
C
1
Telephone Directory B Memory Lock ID C
Tonal Signal Transmission O Modifying a memory file X
Transfer Request Multi Sort Document Reception X
A: 19 stations (from memory), 20 Multicopy mode X
O
stations (immediate) Night Timer X
B: 30 stations Own telephone number O
Transmission Deadline X Printing a memory file O
Turnaround Polling X RDS on/off O
Voice Request O Reception Mode Switching Timer O
Reception Time (non-memory rx
O
Communication Features - only)
Service Selectable Remote ID O
AI Short Protocol X Reverse Order Printing X
Auto-reduction override option X RTI, TTI, CSI O (S)
Busy tone detection O Speaker volume control O
Closed network (tx and rx) O Specified Cassette Selection X
Continuous Polling Reception O Substitute reception on/off O
Dedicated tx parameters O Telephone line type O (S)
ECM O TTI on/off O
EFC O User Function Keys X
MV1200 compatibility X User Parameters O
Page retransmission O Wild Cards O
Page separation mark X
Polling tx file lifetime in the SAF B Reports - Automatic
Protection against wrong conn. O Charge Control Report X
Resol’n stepdown override option X Communication Failure Report O
Short Preamble O Confidential File Report C
Well log O Error Report O
Memory Storage Report O
Other User Features Mode Change Report X
Auto Service Call X Polling Clear Report B
Center mark X Polling Reserve Report O
Chequered mark X Polling Result Report O
Clearing a memory file O Power Failure Report O
Clearing a polling file O Journal O
Clock O Transfer Result Report X
Confidential ID C Transmission Result Report O
Copy mode O
Counters O Reports - User-initiated
Dialled number check X Authorized Reception List O
Direct entry of names O Charge Control Report X
Function Programs O File List O
ID Code O Forwarding List C
Label Insertion O Group List O

1-3
November 30th, 1991 OVERALL MACHINE INFORMATION
FEATURES

Reports - User-initiated Memory Files

Personal Code List O
Program List O
Type A Models
Quick Dial List O Max. number of files: 10
Specified Cassette Selection List X Max. number of stations/file: 20
Speed Dial List O Max. number of stations overall: 21
Journal O Max. number of pages overall: 64
Transmission Status Report X (including pages stored as Auto
User Function List X Documents)
User Parameter List O
Type B Models
Service Mode Features Max. number of files: 100
Back-to-back test O Max. number of stations/file: 142
Bit switch programming O Max. number of stations overall: 299
Buzzer test O Max. number of pages overall: 200
Cable equalizer (rx only) O (including pages stored as Auto
Comm. parameter display O Documents)
DTMF tone test O
Echo countermeasure O
Error code display O
LCD contrast control O
Memory file forwarding O
Memory file printout (all files) O
Modem test O
NCU parameters O
Operation panel test O
Printer mechanism test X
Printer test patterns O
Programmable attenuation X
Protocol dump list O
RAM display/rewrite O
RAM dump O
Ringer test X
Scanner lamp test O
Scanner mechanism test O
Sensor initialization O
Serial number programming O
Service monitor report O
Service station number X
System parameter list O
Technical data on the Journal O
Thermal head parameters O
Transmission Status Report X

1-4
OVERALL MACHINE INFORMATION November 30th, 1991
COMPONENT LAYOUT

1.3. COMPONENT LAYOUT

1
1.3.1. Mechanical Components

1 2 3 4 5 6 7 8 9 10 11

19

18

17 16 15 14 13 12

1. R2 Rollers Feed the document through the scanner.

2. Exposure Glass Exposes the original to light from the xenon lamp.
3. Xenon Lamp Illuminates the document.
4. R1 Rollers Feed the document through the scanner.
5. Separation Roller Allows one page into the scanner.
6. Document Feed Roller Feeds the document into the scanner.
7. Separation Plate Spreads out the leading edges of the pages fed into the
scanner.
8. Pick-up Roller Picks up pages of the document from the document
table.
9. Lens Block Focuses light reflected from the document onto the
CCD.
10. CCD (Charge Coupled This converts the light reflected from the document into
Device) an analog video signal.
11. Thermal Paper Roll Thermal paper for printing.
12. Shading Plate Allows more light through from the ends of the xenon
lamp than from the centre, to counteract the relative
dimness at the ends of the lamp.
13. Second Mirror Reflects light from the document towards the CCD.
14. Thermal Head Prints received data on the thermal paper.
15. Platen Roller Feeds the paper through the printer.
16. Cutter Cuts off the printed page.
17. Feed-out Rollers Feed out the page which has been cut off.
18. First Mirror Reflects light from the document towards the CCD.
19. Third Mirror Reflects light from the document towards the CCD.

1-5
November 30th, 1991 OVERALL MACHINE INFORMATION
COMPONENT LAYOUT

1.3.2. Drive Components

1 2 3 4 5 6

10 9 8 7

1. R2 Roller Drive Gear Drives the R2 roller.

2. Scanner Drive Gear Transfers drive from the Tx motor to the
scanner and ADF.
3. R1 Roller Drive Gear Drives the R1 roller.
4. Document Feed Idle Transfers drive from the Tx motor to the
Gear document feed roller.
5. ADF Drive the document feed roller, which feeds
Clutch/Document the document into the scanner.
Feed Drive Gear
6. Tx Motor Drives the ADF and scanner.
7. Rx Motor Drives the printer.
8. Printer Drive Gears Transfer Rx motor drive to the printer.
9. Platen Roller Drive Drives the platen roller, which pulls the
Gear thermal paper through the printer
10. Feed-out Roller Drive Drives the feed-out roller, which feeds the
Gear printed copy out of the machine.

1-6
OVERALL MACHINE INFORMATION November 30th, 1991
COMPONENT LAYOUT

1.3.3. Electrical Components

23
1 2 1
22 3
4
21 5
20
6

19 7

8
18
9
17 10
16
15
14 11
13 12

Name Description No.

PCBs
FCU This board controls the machine. 11
MBU This board contains the system ROM and RAM 8
for storing system parameters such as bit switch
settings and programmed telephone numbers.
SBU This board contains the CCD. 10
OP-PORT This board controls the operation panel. 23
NCU This board contains relays and switches for 4
interfacing the machine to the telephone network
and the handset.
PSU This board supplies power to the machine. 7
Xenon Lamp This supplies power to the xenon lamp. 14
Driver
MOTORS
Tx Motor This drives the scanner. 5
Rx Motor This drives the printer. 6
Cutter Motor This drives the cutter. 1

1-7
November 30th, 1991 OVERALL MACHINE INFORMATION
COMPONENT LAYOUT

Name Description No.

CLUTCHES
ADF Clutch This transfers drive from the tx motor to the 3
document feed roller.
SENSORS
Document Sensor This detects the presence of a document in the 22
feeder.
Scan Line Sensor This detects when a page is approaching the 21
auto shading position.
Trailing Edge Sen- This detects when the trailing edge of the page is 20
sor passing the scan line.
Paper End Sensor This detects when the thermal paper has run out. 16
Printer Jam Sen- This detects jams in the printer. 18
sor
Cutter Sensor This monitors the operation of the cutter. 2
Cover Switch This detects whether the cover is open or closed. 15
OTHERS
Thermal Head This prints on the thermal paper. 17
SAF Memory Mod- These memory modules each contain 1 Mbyte of 9
ules (Type B mod- memory for storing fax messages.
els only)
Speaker This allows the user to listen to the condition of 12
the telephone line.
Xenon Lamp This lamp illuminates the document. 19
Battery (Type B This rechargeable battery backs up the SAF 13
models only) memory when the main power is switched off.

1-8
OVERALL MACHINE INFORMATION November 30th, 1991
OVERALL SYSTEM CONTROL

1.4. OVERALL SYSTEM CONTROL

1
Line Handset

Scanner
Sensors NCU Scanner and Printer Drive
Speaker PSU Components and Sensors

Operation
Panel

Modem AFE

CONTROL SIGNALS

Video Processing Thermal

Memory
Head

I/O
CPU RS-232C
SBU Video Port
(CCD) Processor Interface

DATA AND ADDRESS BUS

SAF ECM
Memory Memory
ROM RAM FCU
MBU

The cpu on the FCU board controls the machine, as shown in the above drawing.
There is no modem board in the machine. The cpu performs the digital functions of a modem
and carries out digital to analog conversion of facsimile data. There is a separate analog mo-
dem chip (called the Modem AFE) which does the rest of the modem operations.
Type A Models - This machine does not contain SAF memory. The ECM memory doubles as
a small SAF memory. Battery back-up for this memory is disabled when the memory contains
ECM data.

1-9
November 30th, 1991 OVERALL MACHINE INFORMATION
VIDEO DATA PATH

1.5. VIDEO DATA PATH

The following diagrams show
1.5.1. Transmission the data path for this model.

Reference: Original
Group 3
Facsimile
Manual,
CCD
section Xenon
1-3-1 Lamp Analog Signal

ECM SAF Video CPU

Memory Memory Processor
Modem
(Digital)

MODEM Modem
AFE (Analog)

Line
FIFO
FCU
Buffer
RAM

MBU To the
Network
(via the NCU)

1.5.2. Reception

From the Modem

Reference: Filter
MODEM
Network (Analog) AFE
Group 3 (via the NCU) HYBRID IC
Facsimile
Manual,
section FCU Modem
1-3-2 (Digital)
SAF ECM
Memory Memory CPU

I/O Port

Line
FIFO Thermal
Buffer
RAM Head

MBU
Thermal
Paper

1-10
OVERALL MACHINE INFORMATION November 30th, 1991
POWER DISTRIBUTION

1.6. POWER DISTRIBUTION

1
1.6.1. Distribution Diagram
Motors, ADF Clutch
Xenon Lamp

+24VD
NCU
+5V
+24VS
Thermal +5V
Head +5V
MBU
FCU
+24VD
+5V
RS-232C
+5V Interface
+5V

+12V +5V
+24VS
Regulator SBU
+12V
+24VD +24VS
+24VD +5V
-12V OPU
PSU Regulator
- 5V +5V
- 12V
+5V Scanner
Printer
Sensors Sensors

The PSU supplies power to the machine through the FCU, except for the ther-
mal head power, which it supplies directly. The FCU contains regulators
which generate other voltages needed by the machine.
There are two + 24V power supplies:
• + 24VS: This is always on when the main switch is on.
• + 24VD: This is switched on by the cpu when a ringing signal is de-
tected, or when the user presses the Start or Copy key. It is not inter-
rupted if the cover switch is opened; however, printing stops and the
document is fed out.

In some documentation for this model, + 24VD may sometimes be referred

to as + 24VA.

1-11
November 30th, 1991 OVERALL MACHINE INFORMATION
POWER DISTRIBUTION

1.6.2. Memory Back-up Circuit

+5V
MBU FCU
RAM
Switching
Voltage Circuit 1-11 1-11
Detector

1-9 1-9

Battery
Reference: Switch
Group 3
Facsimile Real Time
[A] Battery Clock
Manual,
section 1-4-3,
Circuit type 1 CPU

Memory
+5V Monitor

+24V
Switching
Circuit
Regulator

SAF
Memory
5-2 ECM
5-1
Memory

[C]

Battery
[B]

The battery [A] on the MBU backs up the RAM on the MBU, which contains
system parameters. It also backs up the real time clock in the cpu. This bat-
tery is not rechargeable. CN1-9 tells the cpu whether the back-up power
(CN1-11) comes from the battery or from the + 5V supply.
Type A models only - Power from a charged capacitor [B] backs up the
ECM memory on the FCU, only if it is being used as a small SAF memory.
Type B models only - A rechargeable battery [C] backs up the SAF memory
and the real time clock for 1 hour. When the main power is switched on, the
+ 24V supply charges the battery. If there is data in the SAF, the battery also
backs up the real time clock, to preserve the MBU battery.

1-12
DETAILED SECTION DESCRIPTIONS November 30th, 1991
SCANNER

2. DETAILED SECTION DESCRIPTIONS

2.1. SCANNER

2.1.1. Mechanisms
Scan Line Sensor
1. Document Detection

2
ADF Clutch

Trailing Edge
Sensor

Document
Sensor

Separation
Plate

Feed Pick-up Roller

Roller Separation Roller

• The machines in this series have an A4-width [8.3"] scanner. There is

no document width detector.
• The scanner contains a xenon lamp.
• There is no shutter mechanism.

Reference: Group 3 Facsimile Manual, section 2-1

2-1
November 30th, 1991 DETAILED SECTION DESCRIPTIONS
SCANNER

2. Pick-up and Feed

Mechanism

Reference:
Group 3
Facsimile
Manual,
section 2-2-1.

Tx Motor
ADF Clutch

• This machine uses an electrical clutch mechanism with trailing edge sen-
sor.
• There is no manual feed.

Resolution

Standard - The tx motor feeds the document at 7.7 lines/mm. The video
processor executes OR processing to convert the data into 3.85 lines/mm.
Detail - The tx motor feeds the document at 7.7 lines/mm. There is no OR
processing, and the data is transmitted at 7.7 lines/mm
Fine - The tx motor feeds the document and transmits data at 15.4 lines/mm.
If the other terminal cannot receive at this resolution, the tx motor feeds the
paper at 7.7 lines/mm, and the data is transmitted using Detail resolution.

Jam Conditions

The cpu detects a document jam if one of the following conditions occurs.
• The scan line sensor does not switch on within 3.5 s of the Start key be-
ing pressed.
• The scan line sensor does not turn off after the maximum document
length has been fed since it turned on.
• The scan line sensor switches on while the document sensor is off.

2-2
DETAILED SECTION DESCRIPTIONS November 30th, 1991
SCANNER

2.1.2. Video Data Processing

Output from the CCD

Auto Shading
Memory
WHITE
WAVEFORM
FEEDBACK

A/D Peak
2
DC Converter Hold
Amplifier
Filter

CORRECTED
DATA

Data Processing
Circuits

VIDEO To the CPU

PROCESSOR and Modem

Reference: Corrected Data from the Auto Shading Circuit

Group 3
Facsimile
Manual, Error
Gamma Basic
section 2-3. Correction, Halftone
Diffusion
Halftone
MTF Process
Process

EDGE
Edge ELEMENTS
Detection

Comparator NON-EDGE
ELEMENTS Image/Text
Detection
Reduction
Background
Detection

OR
Halftone
Processing

Reduction
B B’
A

Process Selector

To CPU and Modem

2-3
November 30th, 1991 DETAILED SECTION DESCRIPTIONS
PRINTER

2.2. PRINTER

2.2.1. Mechanisms

1. Paper Feed

Mechanism
One-way Clutch

Feed-out
Roller

Platen Roller

Reference:
Group 3
Facsimile
Manual,
section 3-4-1.
Rx Motor

The printer is an A4-width [8.3"] printer.

Resolution

Standard - Each received line is printed 4 times

Detail - Each received line is printed twice
Fine - Each received line is printed once.

2-4
DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

Jam Detection

The cpu detects a copy jam if one of the following conditions occurs:
• If the printer jam sensor still does not detect paper after the minimum
copy length has been fed since the start of printing.
• Between pages of a multipage printout, the printer jam sensor switches
off. A jam is detected if the sensor does not switch back on after the
minimum copy length has been fed since it turned off.
• If the printer jam sensor still detects paper after the end of the feed-out
procedure for the last page of a print run. 2
2. Cutting

Cutter
Blade

Reference:
Group 3
Facsimile Cutter
Manual, Sensor
section 3-6.
Cutter
Motor

The cutter mechanism is exactly as described in section 3-6 of the Group 3

Facsimile Manual.
3. Cutter Jam Detection

A cutter jam is detected if one of the following conditions occurs:

• If the cutter sensor does not open within 0.25 s after the cutter starts to
move
• If the cutter sensor stays open for more than 1.0 s

If a cutter jam is detected, the cutter motor reverses to return the cutter to the
standby position.

2-5
November 30th, 1991 DETAILED SECTION DESCRIPTIONS
PRINTER

2.2.2. Circuits

1. Video Data Processing

• Smoothing is as described in section 3-5-1 of the Group 3 Facsimile
Manual
• There is no reduction.

2. Thermal Head

Both machines use an A4-width [8.3"] thermal head. Refer to section 3-5-2 of
the Group 3 Facsimile Manual for a circuit diagram.
The operation of the thermal head is as explained in the Group 3 Facsimile
Manual, except that when printing a line, blocks 0 and 1 are printed together,
then blocks 2 and 3 are printed together.
The data are printed as explained in section 3-5-3 of the Group 3 Facsimile
Manual. In Fine mode, the pulse width is automatically increased by 50%.
The machine prevents overheat protection by adjusting the pulse width in ac-
cordance with the temperature measured by the thermistor on the thermal
head.

Reference: Group 3 Facsimile Manual, sections 3-5-1, 3-5-2, and 3-5-3.

2-6
DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2.3. PCBs AND THEIR FUNCTIONS

2.3.1. FCU
Line Handset

Scanner
Scanner and Printer Drive
Sensors
Speaker NCU PSU Components and Sensors

2
Operation
Panel

Modem AFE HIC Drivers

CONTROL SIGNALS

FCU
Video Processing Thermal
Memory
Head

I/O
CPU RS-232C
SBU Video Port
(CCD) Processor Interface

DATA AND ADDRESS BUS

Memory Back-up SAF ECM

Control Memory Memory
ROM RAM

MBU

2-7
November 30th, 1991 DETAILED SECTION DESCRIPTIONS
PCBs AND THEIR FUNCTIONS

1. CPU (AFSP)
• 65C02 compatible microprocessor
• Interrupt control
• DMA control
• Data compression and reconstruction (high speed MH coding for 4.5-
second scanning)
• Modem (digital operations)
• Real time clock (battery backed-up)
• Memory control
• Control of all mechanisms (directly or through other chips)
• NCU control (through the I/O Port)

2. I/O Port (LIOP)

• Clock control
• Sensor monitoring (including A/D conversion where necessary)
• Tone detection
• Thermal head control
• Tx/Rx/cutter motor drive control
• Operation panel control

3. Modem Analog Front End (Modem AFE)

• Modem (analog operations)
• Attenuation

4. Video Processor (VPP)

• Analog/digital video signal processing

5. Driver (MFPD)
• Tx/Rx/cutter motor drive

6. Driver Array
• Xenon lamp/ADF clutch drive

7. Hybrid IC (HIC)
• Gain control for rx data
• Filters

8. RAM
Type A Models
• 128k used for ECM (no back-up) or SAF (backed up by a capacitor)
Type B Models
• 128k for ECM (no back-up)
• 256k SAF memory (with battery back-up)

2-8
DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2.3.2. MBU

System MBU
ROM

DATA AND ADDRESS BUS

2
Memory Back-up System
Control RAM

To/From To/From
FCU FCU

1. System ROM
• Contains the software to run the machine

2. System RAM
Type A Models
• 32k SRAM for parameter storage, line buffer, FIFO
Type B Models
• 32k SRAM and 32k PSRAM for parameter storage, line buffer, FIFO,
SAF memory administration

The SRAM is backed up by the battery on the MBU

Note: The MBU for the Type A model is not interchangeable with the MBU
for the Type B model.

2-9
November 30th, 1991 DETAILED SECTION DESCRIPTIONS
PCBs AND THEIR FUNCTIONS

2.3.3. SBU
Analog Video Drive Clocks
To the FCU From the FCU

Drivers

CCD

+12V
Inverter
+12V Amplifier

+
Emitter
Follower
SBU

2.3.4. OPU

Operation Panel Operation Panel

LCD Panel Keys LEDs

Output
Auxiliary Operation Operation Panel
from the
Panel Controller Controller
Scanner
Sensors

Serial Interface
To/From FCU

2-10
DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2.3.5. NCU

1. PCB Block Diagram

Di Relay Ds Relay Tx/Rx Data

L1
To/From FCU
Protection Filter
2
Circuit
L2
Line
To Current
FG Network Detector Oh
Relay To
Gs Relay FCU
Ringing
Signal
Detector
GS

T1

To Filter
Handset

T2
From FCU
Relay
Driver

NCU

• For simplification, relay drive signals and detector outputs to/from the
FCU are not shown on this diagram.
• In the above diagram, the relays are shown in the standby position for
Auto Receive (Fax) Mode.

2-11
November 30th, 1991 DETAILED SECTION DESCRIPTIONS
PCBs AND THEIR FUNCTIONS

2. Signal and Jumper Settings

The following table shows the jumper positions for each country, and the
status of the relay control signals (CN3-A7, B7, and A8). The country is se-
lected by the Country Code for NCU Parameters (NCU Parameter 00; use
Function 96).

Standby Mode After Ringing Detection Jumpers

CN3- CN3- CN3- CN3- CN3- CN3- TB1 TB TB TB TB TB JP
A7 B7 A8 A7 B7 A8 & 2 3 8 4 5 6 1
Germany X X X O O X O X X X X X X
UK X O X O O X O X X X X X X
Italy O O X O O X O X X X X X X
Austria O O X X X X O X X O X X X
Belgium O O X X X X O X X X X X X
Denmark O O X X X X O X X X X O X
Finland O O O O O X O X X X X X X
Ireland O O X X X O O X X X X X X
Norway X O X X X O O X X X X X O
Sweden X X X X X X O X X X X X X
Switz. X O X X X X O O O X X X X
Portugal O O X X X X O X X X X O X
Holland O O X X X O O X X X O X X
Hg Kong X O X O O X O X X X X X X
S. Africa O O O O O X O X X X X X X
Australia X O X O O X O X X X X X X
N. Z’land X O X O O X O X X X X X X
Israel O O X O O X O X X X X X X
Spain O O X X X X O X X X X O X
Singapore O O X O O X O X X X X X X
Malaysia X O X O O X O X X X X X X

Key
Signal Status: O = High, X = Low
Jumper Settings: O = Closed, X = Open

2-12
DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2.3.6. PSU

LIVE Surge Current

Prevention
Surge Main Noise
Prevention Switch Filter

NEUTRAL

2
Power Supply
Surge Generation
Prevention Circuits

GROUND

PSU

+24VD +24VD +24VD +24VS +5V -12V

To To Activation To To To
Thermal FCU Signal FCU FCU FCU
Head

Overheat Protection in the PSU

If the PSU thermostat temperature exceeds about 90 °C, the power supply
outputs from the PSU are disabled.
If this happens:
1. Switch off the machine.
2. Take out the PSU and examine it for damage. Take care because it may
be hot.
3. Put back the PSU and switch the machine on. If the machine does not op-
erate, change the PSU.
Note: Do not switch the machine back on until at least 2 minutes after
you switched it off.

2-13
INSTALLATION November 30th, 1991
CONNECTING UP THE MACHINE

3. INSTALLATION
3.1. CONNECTING UP THE MACHINE

LINE

3-1
November 30th, 1991 INSTALLATION
INITIAL PROGRAMMING

3.2. INITIAL PROGRAMMING

Check the following:

• Are the country codes for NCU parameters (Function 96, parameter 00)
and bit switch settings (bit switch 0F) correct for the country of installa-
tion? Also check the ringback tone generation parameter settings at the
end of section 4-3. If the default settings are inadequate, reprogram
them (these values are not affected by the country code).
• Are the NCU jumper settings correct for the country of installation (see
section 2-3-5)?
• Do any bit switch or other settings have to be changed to match line
conditions or user requirements?
• Have you programmed the serial number (Function 98, section 4-1-18)?

In some countries, the user cannot program the following items, so program
them before you leave the machine.
• Telephone Line Type (Function 71, section 4-1-23)
• CSI (Function 53, section 4-1-22)

The user should program the following items after installation:

• Telephone Line Type (in some countries, this is not a user adjustment)
• RTI, TTI, and CSI (in some countries, CSI is not a user adjustment)
• ID Codes (ID Code, Remote ID, Confidential ID, Memory Lock ID)
• The fax machine’s own telephone number
• Date and Time
• Language Selection

3.3. LANGUAGE ROM SELECTION

The standard ROM contains the following languages: English, German, Ital-
ian, Swedish, Spanish. The user can select one of these languages with a
user programming function.
If the user wishes to use French, install the French language ROM. This ROM
contains the following languages: English, German, Italian, Swedish, French.
In the same way as for the standard ROM, the user can select one of these
languages with a user programming function.
Note: • Switch the machine off before changing the ROM.
• Make sure that there are no messages in the memory before you
change the ROM, or data will be lost.

3-2
SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4. SERVICE TABLES AND PROCEDURES

4.1. SERVICE LEVEL FUNCTIONS

4.1.1. Bit Switch Programming (Function 91)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 1 Yes DEFAULT: 0000 0000

BITSW 00: 0000 0000

Bit 7 is displayed at the left, and bit 0 at

the right.

3. Increment bit switch: #

Decrement bit switch: *

Example: Display bit switch 3: # x3 DEFAULT: 0000 0000
BITSW03: 0000 0000

4. Adjust the bit switch.

Example: To change the value of bit
7, press 7 DEFAULT: 0000 0000 4
BITSW03: 1000 0000

5. Either:
• Adjust more bit switches - go to step 3.
• Finish - Function

4-1
November 30th, 1991 SERVICE TABLES AND PROCEDURES
SERVICE LEVEL FUNCTIONS

4.1.2. System Parameter List (Function 92)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 2 Yes START
SYSTEM REPORT

3. Start

After printing, press Function

4.1.3. Error Code Display (Function 93)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 3 Yes ERROR CODE # /∇

1-01 JAN 01 17:30

3. Either:
Scroll through the error codes - #

Finish - Function

4.1.4. Service Monitor (Function 93)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 3 Yes ERROR CODE # /∇

1-01 JAN 01 17:30

3. No/∇ Start

4.1.5. Protocol Dump (Function 94)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 4 Yes Start

4-2
SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.6. RAM Display/Rewrite (Function 95)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 5 Yes Y/∇
DISPLAY MEMORY

3. Yes ADDRESS = 2044C

DATA = 03

4. Input the address that you wish to see. Example: Address 20202

2 0 2 0 2 ADDRESS = 20202
DATA = 00

Note: The first digit must always be 1 (Type A) or 2 (Type B).

5. If you wish to change the data, type in the new data.

Example: 80, press 8 0 ADDRESS = 20202
DATA = 80

Note: If you wish to move the cursor, press →

6. Either:
• View more addresses - go to step 4. 4
• Finish - Yes Function

4.1.7. RAM Dump (Function 95)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 5 Yes Y/∇
DISPLAY MEMORY

3. ∇ Yes MEMORY DUMP START/N

B= 2, ST-0000,END-00FF

4. Input the bank number (B), and the start The value of B is
and end addresses. Max. range: 256 bytes always 2.
Example: Start at 1200, end at 12FF.

2 1 2 0 0 1 2 F F Start MEMORY DUMP START

B= 2, ST-1200,END-12FF

4-3
November 30th, 1991 SERVICE TABLES AND PROCEDURES
SERVICE LEVEL FUNCTIONS

4.1.8. NCU Parameters (Function 96)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 6 Yes NCU PARAMETER KPAD/Y

NO.00 001

3. Scroll through the parameters - Yes

Enter new values at the keypad.

Example: Set NCU parameter 04 to 005.

Yes Yes Yes Yes 0 0 5 NCU PARAMETER KPAD/Y

NO.04 005

4. To finish: Function

Note: Parameter 00 is the Country Code, and Parameter 01 is the Tx Level

(if the Tx level should be -9 dB, input 9).
Refer to section 4-3 for full details about NCU parameters.

4.1.9. ADF Test (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 1 SCANNER TEST KPAD

ADF-1 LAMP-2

4. 1

5. Function Function

6. Place a document in the feeder and

press Copy

4-4
SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.10. Xenon Lamp Test (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 1 SCANNER TEST KPAD

ADF-1 LAMP-2

4. 2 SCANNER LAMP TEST

The xenon lamp lights up for 5 minutes.

4.1.11. DTMF Tone Test (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 2 DTMF TEST
DUAL-1 SINGLE-2 4
4. Either:

• Test dual tones - 1 . Go to step 5.

• Test single tones - 2 . Go to step 8.

5. The display is as shown opposite. DUAL TONE

PRESS KEYPAD

Press a key on the ten key pad.

Example: 1 Start

6. To stop the test: Stop

7. Either:
Test another tone: Go to step 5.
Finish: Function

4-5
November 30th, 1991 SERVICE TABLES AND PROCEDURES
SERVICE LEVEL FUNCTIONS

8. The display is as shown opposite.

SINGLE TONE
PRESS KEYPAD

Press the required key.

697 Hz 1 1209 Hz 5
770 Hz 2 1336 Hz 6
852 Hz 3 1477 Hz 7
941 Hz 4 1633 Hz 8

Example: To test 1633 Hz, press 8 Start

9. To stop the test: Stop

10. Either:
Test another tone: Go to step 8.
Finish: Function

4.1.12. Printer Test Patterns (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 3 PATTERN PRINT KPAD

1-7

4. Press a key from 1 to 7. A test pattern is printed.

4.1.13. Operation Panel Test (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 4

4-6
SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.14. Modem Test (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 5 MODEM TEST
G3-1 TONE-2

4. Either:
Test G3 carrier signals - 1 . Go to step 5.

Test frequencies - 2 . Go to step 8.

5. The display is as shown opposite. 9600-1 7200-2

4800-3 2400-4 300-5

Press the required key.

Example: Test the 9600 bps carrier 1 Start

6. To stop the test: Stop

7. Either: 4
Test another tone: Go to step 5.
Finish: Function

8. The display is as shown opposite. 2100-1 1100-2 800-3

PRESS KEYPAD

Press the required key.

Example: To test 1100 Hz, press 2 Start

9. To stop the test: Stop

10. Either:
• Test another tone: Go to step 8.
• Finish: Function

4-7
November 30th, 1991 SERVICE TABLES AND PROCEDURES
SERVICE LEVEL FUNCTIONS

4.1.15. Ringer Test (Function 97)

Not used; do not try to operate this func-

tion.
4.1.16. Buzzer Test (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 7

Press the Stop key to stop the buzzer.

4.1.17. Sensor Initialization (Function 97)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 8 NOW SETTING SENSORS

The reflective photosensors in the printer are initialized. Any defective sensor
will be indicated on the display.
SB4: Paper end sensor
SB5: Paper jam sensor

Do not switch the machine off and/or cover the sensors with paper before
this test.

4-8
SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.18. Serial Number (Function 98)

1. Function 5 1 9 9 1
then immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 8 Yes SERIAL # KPAD

3. Enter the machine’s serial number

at the ten key pad.
SERIAL # KPAD/Y/N
7940479186

To correct a mistake: No

4. If the display is correct: Yes

4.1.19. Pulse Width (Function 99)

1. Function 5 1 9 9 1
them immediately Yes FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 9 Yes PULSE WIDTH

0.30MS
HEAD
A
4
3. Enter the pulse width at the ten key pad. Do not adjust the head width;
keep this at A at all times.
Example: 0.45 ms.

0 4 5 Function

4-9
November 30th, 1991 SERVICE TABLES AND PROCEDURES
SERVICE LEVEL FUNCTIONS

4.1.20. Bypassing Restricted Access

Use this procedure if the user has switched on Restricted Access. This en-
ables you to use the machine without having to input a Personal Code. It is
also useful if the user cannot operate the machine because they cannot re-
member any of the Personal Codes.

1. 2 2 2 2

2. Immediately press Quick Dial key 11

Then operate the machine as you wish. When the machine is returned to
standby mode, Restricted Access is reimposed immediately.

4.1.21. Printing all Memory Files (Function 23 [Type A] or 24 [Type B])

First, set bit 5 of bit switch 01 to 1.

1. Function 2 3 Yes
or Function 2 4 Yes FILE NO

2. Press No/∇ Yes Start .

All files in the memory, including confidential messages, will be printed one by
one. The files will not be erased.
After you have finished, set bit 5 of bit switch 01 back to 0.
Note: To erase memory files, set bit 2 of bit switch 00 to 1. All files will be
erased, and some RAM addresses will also be cleared.

4-10
SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.22. CSI Programming

This procedure is for use in countries where CSI programming is a service

function.
First, set bit 5 of bit switch 01 to 1.

1. Function 5 2 2 2 2

5 3 Yes Y/∇
SET RTI

2. Press No twice. Y/∇

SET CSI

3. Press Yes . CSI KPAD

4. Input the CSI (not more than 20 digits). CSI KPAD/Y/N

2015559456

5. Press Yes Function .

After you have finished, set bit 5 of bit switch 01 back to 0.

4.1.23. Telephone Line Type Selection

This procedure is for use in countries where telephone line type selection is a
service function. 4
First, set bit 5 of bit switch 01 to 1.

1. Function 5 2 2 2 2

7 1 Yes Y/∇
SELECT TT/DP

2. Press Yes . LINE = TT Y

TT= 1 DP= 2

3. Either:
Select tone dialling - 1 .

Select pulse dialling - 2 .

Finish: Function

After you have finished, set bit 5 of bit switch 01 back to 0.

4-11
November 30th, 1991 SERVICE TABLES AND PROCEDURES
BIT SWITCHES

4.2. BIT SWITCHES

WARNING
Do not adjust a bit switch that is described as "Not used", as this
may cause the machine to malfunction or to operate in a manner
that is not accepted by local regulations. Such bits are for use only
in other areas, such as Japan.

Bit Switch 00
FUNCTION COMMENTS
0 MTF process 0: The MTF process is used when required by the software.
0: Enabled 1: Disabled 1: The MTF process is never used.
1 RAM reset level 2 When this bit is set to 1, some items stored in the RAM are
1: Reset reset, and then this bit changes back to 0.
All items are reset except the sensor data, pulse width, and
the clock. Also, all image files in the SAF memory are erased.
2 RAM reset level 3 When this bit is set to 1, some items stored in the RAM are
1: Reset reset, then this bit changes back to 0. All items are reset
except the bit switch and NCU parameter settings, sensor
Note: RAM reset level data, pulse width, clock, own tel. no., CSI, RTI, TTI, Quick
1 is a RAM Dials, Speed Dials, Groups, and the Journal memory. Also,
adjustment. It is not all image files in the SAF memory are erased.
described in this This bit switch is recommended for use when it is necessary
manual. to clear the SAF, as fewer RAMs will need reprogramming.
3 Memory file forwarding Use this if the printer does not work, but the user wishes to
1: Forward the files print the files. First, change the fax machine’s telephone
number (Function 51) to the number to which you wish to
forward the files, then set this bit to 1. All files in the memory
will be forwarded. This bit resets to 0 automatically.
However, you must return the fax machine’s telephone
number to the original setting. The files stay in memory.
4 Inclusion of technical 1: Instead of the personal code, the following data are listed
data on the Journal on the Journal as a six-figure number.
0: No 1: Yes First two numbers: Final modem rate (for example, 96
means 9,600 bps)
Second two numbers (Rx mode only): Rx signal level (Level
= 0 - 0.375x, where x is the value on the report; accurate to
3 dB)
Third two numbers (Rx mode only): Rx cable equalizer; 00
= Equalizer is Off, 01 = Equalizer is On
5 Monitor speaker Used for testing. Set this bit to 1 to hear the fax data signal
during video data (phase C of CCITT T.30 protocol).
communication (tx Make sure that you reset this bit after testing.
and rx)
0: Disabled 1: Enabled
6 Not used Do not change the factory setting.
Continued on the next page

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SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 00
FUNCTION COMMENTS
7 Communication This is a fault-finding aid. The LCD shows the key
parameter display parameters (see the next page). This is normally disabled
0: Disabled because it cancels the CSI display for the user.
1: Enabled Make sure that you reset this bit after testing.
See below for information about this display.

Communication Parameter Display

Modem rate Sub-scan Coding Width and Mode I/O Rate

(bps) Resolution reduction (ms/line)
96: 9600 S: 3.85 l/mm 1D: MH A: A4 [8.3"] DCS: 0M: 0
72: 7200 D: 7.7 l/mm 2D: MR B: B4 [10.1’] CCITT G3 5M: 5
48: 4800 F: 15.4 l/mm 1E: MH+ EFC C: A3 [11.7"] NSS: 10M: 10
24: 2400 2E: MR+ EFC N: No reduction Non- 20M: 20
1C: MH+ ECM R: Reduction standard G3 40M: 40
2C: MR+ ECM
MC: MMR+ ECM

Bit Switch 01
FUNCTION COMMENTS
0 LCD contrast Use these bit switches to adjust the brightness
Bit 2 1 0 Contrast of the LCD on the operation panel.
1 0 0 0 Brightest
0 0 1 ↓
↓ ↓
2
1 1 0 ↓ 4
1 1 1 Darkest
Memory read/write by RDS (0,0): At any time, an RDS system can read or
Bit 4 3 Setting write RAM data such as TTI, RTI, and bit
3 0 0 Always enabled switches.
0 1 User selectable (0,1), (1,0): Normally, RDS systems are locked
4 1 0 User selectable out, but the user can temporarily switch RDS
1 1 Always disabled on to allow an RDS operation to take place.
RDS will automatically switch off again after a
certain time, which is stored in a RAM address
(see section 4-5). Note that, if an RDS
operation takes place, RDS will not switch off
until this time limit has expired.
(1,1): All RDS systems are always locked out.
5 Dedication transmission parameter This bit must be at 1 in order to program
programming/printing all SAF files dedicated transmission parameters or to print
0: Disabled 1: Enabled all files stored in the SAF memory. Also, if CSI
and/or telephone line type is a service mode in
your area, this bit must be at 1 before
programming.
6 Not used Do not change the factory settings.
7

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
BIT SWITCHES

Bit Switch 02
FUNCTION COMMENTS
0 Not used Do not change the factory settings.
1
2
3 Near-end indication When paper roll near-end has been detected, the
0: Disabled Replace Paper indicator blinks to warn the user. If
1: Enabled this bit is 1, this function is disabled.
4 Minimum printout length This bit switch determines the minimum length of
0: 75 mm 1: 150 mm paper that is always fed out after printing. If the
received message is shorter than this, there will
be a blank space after the message to make up
the minimum length.
5 Not used Do not change the factory setting.
Maximum transmittable document If the user wants to send very long documents
length such as well logs, use the 14 m or 100 m setting.
6 Bit 7 6 Setting
0 0 600 mm
7 0 1 1200 mm
1 0 14 m
1 1 100 m

Bit Switch 03
FUNCTION COMMENTS
0 Dialling with the handset off-hook If this bit is 1, the user will not be able to dial if
0: Enabled 1: Disabled the handset is off hook.
1 Lifetime of polling standby files in 0: Messages stored for polling transmission will
the memory be erased immediately after polling.
0: Erased after being polled 1: This allows the user to keep messages in
1: Kept until user erases memory to be polled by more than one station.
2 Inclusion of communications on If communication did not reach phase 3 of CCITT
the Journal when no image data T.30 protocol (such as for a telephone call), this
was exchanged. communication can be listed on the Journal if
0: No 1: Yes this bit is at 1.
3 Printing of the error code on the If this bit is 1, error codes are printed on the error
error report report for users.
0: No 1: Yes
4 Not used Do not change the factory setting.
5 Printing the TTI in copy mode If this bit is 1, the TTI stored in the machine will
0: No 1: Yes be printed at the top of copies.
6 Printing the received RTI/CSI In addition to the TTI, the other end’s RTI or CSI
0: No 1: Yes will be printed on top of the pages that the
machine receives.
7 Reconstruction time for the first When the sending terminal is controlled by a
line in receive mode computer, there may be a delay in receiving page
0: 6 s 1: 10 s data after the local machine accepts set-up data
and sends CFR. If this occurs, set this bit to 1 to
give the sending machine more time to send data

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SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 04
FUNCTION COMMENTS
Compression modes available in These bits determine what capabilities are
receive mode informed to the transmitting side in the protocol
0 Bit 1 0 Modes exchange.
0 0 MH only
1 0 1 MR or MH
1 0 MR or MH, with
EFC
1 1 MMR, MR, or
MH, with EFC
2 Error counting method The machine counts data errors caused by a
0: 10 (20) [40] noisy line or defective machine.
1: In accordance with the settings 0: If the count reaches 10 (Standard mode), 20
of bits 3 to 7 (Detail mode), or 40 (Fine mode), the machine
sends RTN to the other end in reply to the post-
message command. As 10 (or 20 or 40) good
lines cause the count to decrement, RTN will
only occur in bad conditions.
Burst error threshold If there are more consecutive error lines in the
3 Bit 4 3 Threshold received page than the threshold specified by
0 0 3 (6) [12] these bits, the page is rejected. Values in
4 0 1 4 (8) [16] parenthesis are for Detail resolution, and those in
1 0 5 (10) [20] square brackets are for Fine resolution.
1 1 6 (12) [24]
Error line ratio If the number of error lines divided by the total
5 Bit 7 6 5 Value number of lines reaches the value determined by
0 0 0 5% the settings of these bits, RTN will be sent to the
6 0 0 1 6% other end. 4
0 1 0 7%
7 0 1 1 8%
1 0 0 9%
1 0 1 10%

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
BIT SWITCHES

Bit Switch 05
FUNCTION COMMENTS
Compression modes available in These bits determine what capabilities are
transmit mode informed to the receiving side in the protocol
0 Bit 1 0 Modes exchange.
0 0 MH only
1 0 1 MR or MH
1 0 MR or MH, with
EFC
1 1 MMR, MR, or
MH, with EFC
2 PABX dial tone detection 0: PABX dial tone is detected in accordance
0: Enabled with the parameters programmed in RAM. The
1: Disabled machine will wait for the dial tone before trying
to gain access to the PSTN.
3 PSTN dial tone detection 0: PSTN dial tone is detected in accordance
0: Enabled with the parameters programmed in RAM. The
1: Disabled machine will wait for the dial tone before dialling
out.
4 Busy tone detection 0: Busy tone is detected in accordance with the
0: Enabled parameters programmed in RAM. The machine
1: Disabled will not have to wait out the CCITT T1 time
before hanging up if the line is busy.
5 Not used Do not change the factory setting.
PSTN access method through Set these bits to match the type of signal
6 PABX accepted by the PABX. If there is no PABX
Bit 7 6 Method between the machine and the network, set both
7 0 0 No PABX bits to 0.
0 1 Loop Start
1 0 Ground Start
1 1 Flash Start

Bit Switch 06
FUNCTION COMMENTS
0 PSTN access number Program this bit switch if the machine is
behind a PABX. The access number is
1 Access No. Hex value of bit switch the number the user must dial to get an
0 F0 outside line. If the machine detects the
2 ↓ ↓ access number at the start of a
9 F9 telephone number, it will connect with
3 the PABX, pause for a few seconds,
00 00 then dial the number.
4 ↓ ↓ Example: If the access number for the
99 99 PABX is 9, the bit switch must be F9. To
5 do this, set all bits to 1 except bits 1 and
2.
6 If there is no PABX, set all bits to 1.

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SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 07
FUNCTION COMMENTS
0 Back to back test Set this bit to 1 when you wish to do a back-
0: Disabled to-back test.
1: Enabled
1 Short preamble If this is 0, the Short Preamble feature is
0: Enabled 1: Disabled switched on.
2 Not used Do not change the factory setting.
3 Echo countermeasure If the setting is 1, the machine will hang up if
0: Enabled it receives the same signal twice. If the
1: Disabled setting is 0, the machine will ignore echoes
from the line.
4 DIS detection number The machine will send DCS (G3 set-up
0: 1 signal) if it receives DIS. If echoes are
1: 2 frequent, setting this bit to 1 will allow the
machine to wait for the second DIS before
sending DCS.
5 ECM If this is 0, ECM is switched on.
0: On 1: Off
6 Post message response timing (rx) 0: Data cannot be stored in the SAF during
0: After feed-out reception if the memory is full, so if this bit is
1: When the leading edge reaches the 0, the machine will wait until the page has
printer jam sensor been fed out. However, communication will
take longer to complete.
1: The post message response is sent earlier,
but the paper has not been fed out yet, so if
there is a jam after this, data may be lost.

7 FTZ protocol
This bit is ignored during memory reception.
This bit must be set to 1 in Germany.
4
0: Disabled 1: Enabled

Bit Switch 08 (Transmission)

FUNCTION COMMENTS
0 Initial Tx modem rate These bits set the initial starting modem
Bit 2 Bit 1 Bit 0 Setting rate for transmission. This rate may fall
1 0 1 1 9,600 bps back to a slower rate depending on line
0 1 0 7,200 bps conditions and the remote terminal’s
2 0 0 1 4,800 bps capabilities.
0 0 0 2,400 bps
Other settings: Not used
3 Not used Do not change the factory settings.
4
5
6
7

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
BIT SWITCHES

Bit Switch 09 (Transmission)

FUNCTION COMMENTS
0 CNG signal transmission in CNG (calling tone) is normally used by auto-dial fax
manual transmission mode machines to alert a manual machine operator that
0: Disabled an auto-transmitting machine is on the line waiting
1: Enabled to transmit. This tone is not needed for manual
operation (full number dialling).
1 Wrong connection prevention (0,1) - The machine will not transmit if the last 8
method digits of the received CSI do not match the last 8
2 Bit 2 Bit 1 Setting digits of the dialled telephone number. This does not
0 0 None work for manual dialling.
0 1 8 digit CSI (1,0) - The same as above, except that only the last
1 0 4 digit CSI 4 digits are compared.
1 1 CSI/RTI (1,1) - The machine will not transmit if the other end
does not identify itself with an RTI or CSI.
(0,0) - Nothing is checked; transmission will always
go ahead.
3 Closed network (transmission) 1: Transmission will not go ahead if the ID code of
0: Disabled the other terminal does not match the ID code of
1: Enabled this terminal. This feature may not be reliable when
communicating with another maker’s product.
4 Monitor speaker status during If this is 1, the speaker will operate during memory
memory transmission transmission. Keep this bit at 0 if the user complains
0: Off 1: On about noise from the speaker.
5 Not used Do not change the factory settings.
6
7

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SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 0A (Reception)

FUNCTION COMMENTS
0 Initial Rx modem rate The setting of these bits is used to inform
Bit 2 Bit 1 Bit 0 Setting the sending machine of the initial starting
1 0 1 1 9,600 bps modem rate for the machine in receive
0 1 0 7,200 bps mode. If 9,600 bps presents a problem
2 0 0 1 4,800 bps during reception, use a lower setting.
0 0 0 2,400 bps
Other settings: Not used
3 Not used Do not change the factory settings.
4
5
6 Cable equalizer (rx mode) Set this bit to 1 if there is signal loss at
0: Off 1: On higher frequencies because of the length
of wire between the modem and the
telephone exchange.

Also, try using the cable equalizer if one or

more of the following symptoms occurs.
• Communication error with error codes
such as 0-20, 0-23, etc.
• Modem rate fallback occurs frequently.
7 Not used Do not change the factory setting.

Bit Switch 0B (Reception)

FUNCTION COMMENTS
0 Closed network (reception)
0: Disabled
1: Reception will not go ahead if the ID
code of the other terminal does not match
4
1: Enabled the ID code of this terminal. This feature
may not be reliable when communicating
with another maker’s product.
1 Training error tolerance This bit determines the values available with
0: Type 1 bits 2 and 3.
1: Type 2
2 Training error tolerance Type 1 can be used anywhere. Type 2 is
Bit 3 2 Type 1 Type 2 normally used only in Europe.
3 0 0 15 14
0 1 10 9 If the machine detects more errors during
1 0 2 4 training than the number set by these bits,
1 1 0 1 training fails and the machine will send FTT.
The data will be resent at a lower rate.
4 Not used Do not change the factory settings.
5
6
7

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
BIT SWITCHES

Bit Switch 0C
FUNCTION COMMENTS
0 European protocol requirements Adjust these bits in accordance with the
0: Disabled 1: Enabled country of installation.
1 German dialling requirements
0: Disabled 1: Enabled
2 Austrian dialling requirements
0: Disabled 1: Enabled
3 Norwegian dialling and protocol
requirements
0: Disabled 1: Enabled
4 Danish dialling requirements
0: Disabled 1: Enabled
5 French requirements
0: Disabled 1: Enabled
6 Swiss requirements
0: Disabled 1: Enabled
7 Not used Do not change the factory setting.

Bit Switch 0D
FUNCTION COMMENTS
0 Not used Do not change the factory settings.
to
5
6 Contents of the top line of the LCD 0: The telephone number being dialled is
when handset mode is in use displayed.
0: Telephone number dialled 1: Only HANDSET MODE is displayed.
1: HANDSET MODE
7 Not used Do not change the factory setting.

Bit Switch 0E
FUNCTION COMMENTS
0 Not used Do not change the factory settings.
1
2
3
4
5 Conditions for reception 1: If the sending machine does not transmit
0: Normal an RTI or CSI, the call will be rejected, and
1: RTI or CSI needed the machine will send DCN.
6 Not used Do not change the factory settings.
7

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SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 0F
FUNCTION COMMENTS
0 Country Code This country code determines the factory
to settings of a wide range of bit switches and
7 00: France 10: Not used RAM addresses. However, it has no effect on
01: Germany 11: USA the NCU parameter settings and
02: UK 12: Asia communication parameter RAM addresses;
03: Italy 13: Japan these are determined by the setting of NCU
04: Austria 14: Hong Kong parameter 00 (function 96).
05: Belgium 15: South Africa
06: Denmark 16: Australia
07: Finland 17: New Zealand
08: Ireland 18: Singapore
09: Norway 19: Malaysia
0A: Sweden
0B: Switzerland
0C: Portugal
0D: Holland
0E: Spain
0F: Israel

Bit Switch 10
FUNCTION COMMENTS
0 Pulse dialling method P= Number of pulses sent out, N= Number
1 Bit 1 Bit 0 Setting dialled.
0 0 Normal (P= N)
0 1 Oslo (P= 10 - N) Do not change the factory settings. 4
1 0 Sweden (N+ 1)
1 1 Sweden (N+ 1)
2 Not used Do not change the factory settings.
3
4
5
6
7

Bit switches 11 to 1F are not used.

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
BIT SWITCHES

Factory Settings
The factory settings of all the bit switches are shown below in hexadecimal
code. The first digit represents bits 7 to 4, and the second digit represents
bits 3 to 0.
Universal version

Switch Setting Switch Setting Switch Setting Switch Setting

00 00 08 03 10 00 18 00
01 02 09 01 11 00 19 00
02 50 0A 03 12 08 1A 00
03 40 0B 02 13 00 1B 00
04 03 0C 01 14 00 1C 00
05 23 0D 00 15 00 1D 30
06 FF 0E 00 16 00 1E 01
07 06 0F 02 17 00 1F 85

Asia version

Switch Setting Switch Setting Switch Setting Switch Setting

00 00 08 03 10 00 18 00
01 02 09 01 11 00 19 00
02 40 0A 03 12 08 1A 00
03 08 0B 00 13 00 1B 00
04 03 0C 00 14 00 1C 00
05 23 0D 00 15 00 1D 30
06 FF 0E 00 16 00 1E 01
07 06 0F 12 17 00 1F 85

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SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

The following tables show the changes in the factory settings for each coun-
try. The settings depend on the country code (bit switch 0F).
Note: Changes to the country code (bit switch 0F) are not included in the
following tables.

Table 1: Based on the Universal version

Country Code Differences (switch settings given in Hex code)

France 00 Switch 0C: 21
Germany Switch 03: 41, Switch 05: 27, Switch 07: 86, Switch 0C:
01
03, Switch 12: 28, Switch 1D: 38
UK None (the settings for the Universal version are based
02
on those required for the UK)
Italy 03 None
Austria 04 Switch 0C: 05
Belgium 05 None
Denmark 06 Switch 0C: 11
Finland 07 None
Ireland 08 None
Norway 09 Switch 0C: 09
Sweden 0A Switch 10: 02
Switzerland 0B Switch 0C: 41
Portugal 0C None
Holland 0D None
Spain 0E None

Table 2: Based on the Asia version (Country code 12)

4
Country Code Differences (switch settings given in Hex code)
Israel 0F None
Hong Kong 14
South Africa 15
Australia 16
New Zealand 17
Singapore 18
Malaysia 19

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

4.3. NCU PARAMETERS

The following tables give the RAM addresses and units of calculation of the
parameters that the machine uses for ringing signal detection and automatic
dialling. The factory settings for each country are also given. Most of these
must be changed by RAM read/write (Function 95), but some can be
changed using NCU Parameter programming (Function 96); if Function 96
can be used, this will be indicated in the Remarks column. The RAM is pro-
grammed in hex code unless (BCD) is included in the Unit column.
When using RAM read/write, you must add the bank number before the four-
digit RAM address number. See section 4-1-6 for details.

Address Function Unit Remarks

413B Country code (NCU parameters Hex Function 96 (parameter 00).
only)
413C Line current detection time 20 ms Line current is not detected
413D Line current wait time if 413C contains FF.
413E Line current drop detect time
413F PSTN dial tone upper frequency Hz (BCD) See Note 2.
limit (HIGH)
4140 PSTN dial tone upper frequency
limit (LOW)
4141 PSTN dial tone lower frequency
limit (HIGH)
4142 PSTN dial tone lower frequency
limit (LOW)
4143 PSTN dial tone detection time 20 ms If 4143 contains FF, the
4144 PSTN dial tone reset time 160 ms machine pauses for the
4145 PSTN dial tone continuous tone 20 ms pause time (4147).
time
4146 PSTN dial tone permissible drop
time
4147 PSTN wait interval 160 ms
4148 Ringback tone detection time 20 ms Detection is disabled if this
contains FF.
4149 PSTN busy tone upper frequency Hz (BCD) If 4149 is FF, detection is
limit (HIGH) disabled. See Note 2.
414A PSTN busy tone upper frequency
limit (LOW)
414B PSTN busy tone lower frequency
limit (HIGH)
414C PSTN busy tone lower frequency
limit (LOW)

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SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Address Function Unit Remarks

414D PABX dial tone upper frequency Hz (BCD) See Note 2.
limit (HIGH)
414E PABX dial tone upper frequency
limit (LOW)
414F PABX dial tone lower frequency
limit (HIGH)
4150 PABX dial tone lower frequency
limit (LOW)
4151 PABX dial tone detection time 20 ms If 4151 contains FF, the
4152 PABX dial tone reset time 160 ms machine pauses for the
4153 PABX dial tone continuous tone 20 ms pause time (4155).
time
4154 PABX dial tone permissible drop
time
4155 PABX wait interval 160 ms
4156 PABX ring back tone detection time 20 ms Detection is disabled if this
contains FF.
4157 PABX busy tone upper frequency Hz (BCD) If this is FF, detection is
limit (HIGH) disabled. See Note 2.
4158 PABX busy tone upper frequency See Note 2.
limit (LOW)
4159 PABX busy tone lower frequency
limit (HIGH)
415A PABX busy tone lower frequency
limit (LOW)
415B Busy tone ON time: range 1 20 ms
415C
415D
Busy tone OFF time: range 1
Busy tone ON time: range 2
4
415E Busy tone OFF time: range 2
415F Busy tone ON time: range 3
4160 Busy tone OFF time: range 3
4161 Busy tone ON time: range 4
4162 Busy tone OFF time: range 4
4163 Busy tone continuous tone
detection time
4164 Busy tone signal state time tolerance for all ranges, and number of cycles
required for detection (a setting of 4 cycles means that ON-OFF-ON or OFF-
ON-OFF must be detected twice).

Tolerance (± )
Bit 1 0
0 0 75%
0 1 50%
1 0 25%
1 1 12.5%

Bits 7, 6, 5, 4 - number of cycles required for detection

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

Address Function Unit Remarks

4165 International dial tone upper Hz (BCD) See Note 2.
frequency limit (HIGH)
4166 International dial tone upper
frequency limit (LOW)
4167 International dial tone lower
frequency limit (HIGH)
4168 International dial tone lower
frequency limit (LOW)
4169 International dial tone detection 20 ms If 4169 contains FF, the
time machine pauses for the
416A International dial tone reset time 160 ms pause time (416D).
416B International dial tone continuous 20 ms
tone time
416C International dial tone permissible
drop time
416D International dial wait interval 160 ms
416E Country dial tone upper frequency Hz (BCD) See Note 2.
limit (HIGH)
416F Country dial tone upper frequency
limit (LOW)
4170 Country dial tone lower frequency
limit (HIGH)
4171 Country dial tone lower frequency
limit (LOW)
4172 Country dial tone detection time 20 ms If 4172 contains FF, the
4173 Country dial tone reset time 160 ms machine pauses for the
pause time (4176).
4174 Country dial tone continuous tone 20 ms
time
4175 Country dial tone permissible drop
time
4176 Country dial wait interval 160 ms
4177 Grounding time (ground start 20 ms The Gs relay is closed for
mode) this interval.
4178 Break time (flash start mode) 1 ms The Di relay is open for this
interval.
4179 International dial access code BCD For a code of 100:
417A 4179 - F1
417A - 00
417B PABX pause time 20 ms
417C Progress tone detection level, and Bit 7 Bit 6 dBm
cadence detection enable flags 1 1 -53
1 0 -32.5
0 1 -40.5
0 0 -29

Bits 3, 2, 1, 0 - See Note 3.

417D CCITT T1 time 2.56 s

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SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Address Function Unit Remarks

417E Max. number of dials per station 1
(not using memory)
417F Redial interval (not using memory) 1 min
4180 Interval between dialling to 2.56 s
different stations
4181 Tx level from modem - dBm Function 96 (parameter 01).
4182 Acceptable ringing signal 1000/ Function 96 (parameter 02).
frequency: range 1, upper limit .672N
4183 Acceptable ringing signal (Hz). N is Function 96 (parameter 03).
frequency: range 1, lower limit the value
4184 Acceptable ringing signal stored Function 96 (parameter 04).
frequency: range 2, upper limit with
4185 Acceptable ringing signal Function Function 96 (parameter 05).
frequency: range 2, lower limit 96.
4186 Number or rings until a call is 1 Function 96 (parameter 06).
detected
4187 Minimum required length of the 20 ms See Note 6. Function 98
first ring (parameter 07).
4188 Minimum required length of the Function 96 (parameter 08).
second and subsequent rings
4189 Ringing signal detection reset time 40 ms Function 96 (parameter 09).
418A Time between opening or closing 1 ms See Notes 5 and 8. Function
the Ds relay and opening the Di 96 (parameter 10).
relay
418B Break time for pulse dialling See Note 5. Function 96
(parameter 11).
418C Make time for pulse dialling See Note 5. Function 96
(parameter 12).
4
418D Time between final Di relay closure See Notes 5 and 8. Function
and Ds relay closing or opening 96 (parameter 13).
418E Pause between dialled digits 20 ms See Note 5. Function 96
(pulse dial mode) (parameter 14).
418F Time waited when a pause is Function 96 (parameter 15).
entered at the operation panel
4190 DTMF tone on time 1 ms Function 96 (parameter 16).
4191 DTMF tone off time Function 96 (parameter 17).
4192 DTMF tone attenuation value - dBm Function 96 (parameter 18).
See Note 7.
41B3 Max. time limit to dial a number 2.56 s All countries: 15[H] (53.76 s)
41B4 Max. no of consecutive pauses in Hex Germany: 1, Others: 250
a telephone number

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

Notes
1. If a setting is not required, store FF in the address.
2. Tone frequencies are stored in BCD in the following format.
Examples:
a) 380 Hz HIGH 0 3 LOW 8 0
b) 1210 Hz HIGH 1 2 LOW 1 0
3. Italy and Belgium only

RAM address 417C: the lower four bits have the following meaning.
Bit 3 1: Country dial tone cadence detection enabled
Bit 2 1: International dial tone cadence detection enabled
Bit 1 1: PABX dial tone cadence detection enabled
Bit 0 1: PSTN dial tone cadence detection enabled

If bit 3 is 1, the functions of the following RAM addresses are changed.

4172: tolerance for on or off state duration (%), coded as in 4164.
4174: on time, hex code (unit = 10 ms)
4175: off time, hex code (unit = 10 ms)

If bits 2, 1, or 0 are 1, the functions of the following addresses are

changed in a similar way to that described for bit 3 = 1.
Bit 2 = 1: 4169, 416B, 416C
Bit 1 = 1: 4151, 4153, 4154
Bit 0 = 1: 4143, 4145, 4146
4. Belgium only

Address 4144 for DTMF dialling is 3.04 s. This can be adjusted by RAM
read/write. However, if pulse dial mode is selected, a value of 20 ms from
the ROM is used, and this cannot be adjusted.
5. Pulse dial parameters (addresses 418A to 418F) are the values for 10
pps. If 20 pps is used, the machine automatically compensates.
6. The first ring may not be detected until 1 to 2.5 wavelengths after the time
specified by this parameter.
7. N must be between 0 and 15. The attenuation levels are as follows.
High frequency tone: - N dBm
Low frequency tone: - N - 3 dBm
8. 418A: Europe - Between Ds opening and Di opening, France - Between
Ds closing and Di opening
418D: Europe - Between Ds closing and Di closing, France - Between Ds
opening and Di closing

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SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

On the following pages, there are tables of factory settings for each country.
To enable the factory settings for a particular nation, program the Country
Code (RAM address 413B [use hex codes] or use Function 96 [input the
decimal value]) to the appropriate setting. The country code also affects the
NCU signal status (see section 2-3-5).
For each RAM address, there are two columns.
• The left hand column shows the actual value of the parameter.
• The right hand column shows the value of the factory setting that is
stored in the RAM. The factory settings are quoted either in hexadeci-
mal code (the actual contents of the RAM address) if there is a H after
the value in the table, or in decimal (converted from the actual hex con-
tents of the RAM address) if there is no H after the value.
• Some RAMs must be programmed in BCD; see the NCU Parameter
definition table for details.
• If the table entry is blank, this means that the value is not used.

Country Code for NCU Parameters [or RAM Address 413B, in hex code]:
France: 00, Germany: 01, UK: 02, Italy: 03, Austria: 04, Belgium: 05, Denmark: 06, Finland: 07,
Ireland: 08, Norway: 09, Sweden: 10 [0A], Switzerland: 11 [0B], Portugal: 12 [0C],
Holland: 13 [0D], Spain: 14 [0E], Israel: 15 [0F], USA: 17 [11], Asia: 18 [12], Japan: 19 [13]
Tx Level (RAM Address 4181): All countries 6 (- 6dB), except the UK (10 [-10dB]), USA (9 [-
9dB]), and Australia (12 [-12dB]).

Country 413C 413D 413E 413F/4140

France 474 Hz 04(H) 74(H)
Germany 1.1 s 55 4.1 s 205 1.06 s 53 498 Hz 04(H) 98(H) 4
UK/Univ
Italy 471 Hz 04(H) 71(H)
Austria 512 Hz 05(H) 12(H)
Belgium 471 Hz 04(H) 71(H)
Denmark 512 Hz 05(H) 12(H)
Finland 536 Hz 05(H) 36(H)
Ireland 1.1 s 55 4.1 s 205 1.06 s 53 450 Hz 04(H) 50(H)
Norway 512 Hz 05(H) 12(H)
Sweden 512 Hz 05(H) 12(H)
Switz. 1.1 s 55 4.1 s 205 608 Hz 06(H) 08(H)
Portugal 450 Hz 04(H) 50(H)
Holland 563 Hz 05(H) 63(H)
Spain 480 Hz 04(H) 80(H)
Israel 1.1 s 55 4.1 s 205 1.06 s 53 498 Hz 04(H) 98(H)
USA
Asia
Australia 450 Hz 04(H) 50(H)

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

Country 4141/4142 4143 4144 4145

France 406 Hz 04(H) 06(H) 2s 100 12 s 75 1s 50
Germany 370 Hz 03(H) 70(H) 2.1 s 105 20 s 125 2.1 s 105
UK
Italy 391 Hz 03(H) 91(H) 2, 50% 21(H) 10.9 s 68 0.6 s 60
Austria 380 Hz 03(H) 80(H) 2.1 s 105 10.1 s 63 0.8 s 40
Belgium 405 Hz 04(H) 05(H) 0.6 s 30 3.04 s 19 0.6 s 30
Denmark 340 Hz 03(H) 40(H) 1.3 s 65 10.1 s 63 1.3 s 65
Finland 315 Hz 03(H) 15(H) 4.1 s 205 10.1 s 63 4.1 s 205
Ireland 200 Hz 02(H) 00(H) 2.1 s 105 10.2 s 64 2.1 s 105
Norway 340 Hz 03(H) 40(H) 1.1 s 55 20 s 125 1.1 s 55
Sweden 340 Hz 03(H) 40(H) 1.92 s 96 5.12 s 32 1.92 s 96
Switz. 338 Hz 03(H) 38(H) 1.92 s 96 10.9 s 68 1.92 s 96
Portugal 300 Hz 03(H) 00(H) 2.1 s 105 9.9 s 62 2.1 s 105
Holland 76 Hz 00(H) 76(H) 1.1 s 55 20 s 125 1.1 s 55
Spain 320 Hz 03(H) 20(H) 1.5 s 75 12.8 s 80 0.72 s 36
Israel 340 Hz 03(H) 40(H) 2.1 s 105 20 s 125 2.1 s 105
USA
Asia
Australia 390 Hz 03(H) 90(H) 3s 150 6s 38 2s 100

Country 4146 4147 4148 4149/414A

France 0.04 s 2 0s 0 474 Hz 04 (H) 74 (H)
Germany 0.08 s 4 4s 25 510 Hz 05 (H) 10 (H)
UK/Univ 4s 25 430 Hz 04 (H) 30 (H)
Italy 1s 100 4s 25 529 Hz 05 (H) 29 (H)
Austria 0.08 s 4 4s 25 0.1 s 5 512 Hz 05 (H) 12 (H)
Belgium 0.08 s 4 4s 25 471 Hz 04 (H) 71 (H)
Denmark 0.08 s 4 4s 25
Finland 0.08 s 4 4s 25
Ireland 0.08 s 4 4s 25 430 Hz 04 (H) 30 (H)
Norway 0.08 s 4 4s 25 512 Hz 05 (H) 12 (H)
Sweden 0.04 s 2 4s 25 512 Hz 05 (H) 12 (H)
Switz. 0.04 s 2 4s 25 0.1 s 5 608 Hz 06 (H) 08 (H)
Portugal 0.08 s 4 4s 25
Holland 0.08 s 4 4s 25 563 Hz 05 (H) 63 (H)
Spain 0.1 s 5 3.04 s 19 460 Hz 04 (H) 60 (H)
Israel 0.08 s 4 4s 25 498 Hz 04 (H) 98 (H)
USA 2.08 s 13
Asia 2.08 s 13
Australia 0.02 s 1 3.04 s 19 450 Hz 04 (H) 50 (H)

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SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Country 414B/414C 414D/414E 414F/4150

France 406 Hz 04(H) 06(H) 900 Hz 09(H) 00(H) 300 Hz 03(H) 00(H)
Germany 350 Hz 03(H) 50(H)
UK/Univ 360 Hz 03(H) 60(H)
Italy 329 Hz 03(H) 29(H) 512 Hz 05(H) 12(H) 391 Hz 03(H) 91(H)
Austria 380 Hz 03(H) 80(H)
Belgium 405 Hz 04(H) 05(H)
Denmark
Finland
Ireland 370 Hz 03(H) 70(H)
Norway 340 Hz 03(H) 40(H)
Sweden 340 Hz 03(H) 40(H)
Switz. 338 Hz 03(H) 38(H) 608 Hz 06(H) 08(H) 338 Hz 03(H) 38(H)
Portugal
Holland 320 Hz 03(H) 20(H) 563 Hz 05(H) 63(H) 76 Hz 00(H) 76(H)
Spain 380 Hz 03(H) 80(H)
Israel 370 Hz 03(H) 70(H) 563 Hz 05(H) 63(H) 370 Hz 03(H) 70(H)
USA
Asia
Australia 390 Hz 03(H) 90(H) 450 Hz 04(H) 50(H) 390 Hz 03(H) 90(H)

Country 4151 4152 4153 4154 4155

France 2 s 100 12 s 75 1s 50 40 ms 2 0s 0
Germany 4s 25 4
UK/Univ 4s 25
Italy 2 s 100 10.1 s 63 0.18 s 9 80 ms 4 4s 25
Austria 4s 25
Belgium 4s 25
Denmark 4s 25
Finland 4s 25
Ireland 4s 25
Norway 4s 25
Sweden 4s 25
Switz. 0.8 s 40 9.9 s 62 0.8 s 40 80 ms 4 4s 25
Portugal 4s 25
Holland 1.1 s 55 20 s 125 1.1 s 55 80 ms 4 4s 25
Spain 3.04 s 19
Israel 2.1 s 105 20 s 125 2.1 s 105 80 ms 4 4s 25
USA 4s 25
Asia 4s 25
Australia 3 s 150 6 s 38 2 s 100 20 ms 1 3.04 s 19

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

Country 4156 4157/4158 4159/415A

France
Germany
UK/Univ
Italy
Austria
Belgium
Denmark
Finland
Ireland
Norway
Sweden
Switz. 608 Hz 06(H) 08(H) 338 Hz 03(H) 38(H)
Portugal
Holland
Spain
Israel 563 Hz 05(H) 63(H) 370 Hz 03(H) 70(H)
USA
Asia
Australia 450 Hz 04(H) 50(H) 390 Hz 03(H) 90(H)

Country 415B 415C 415D 415E 415F

France 0.5 s 25 0.5 s 25
Germany 0.24 s 12 0.24 s 12 0.48 s 24 0.48 s 24 0.14 s 7
UK/Univ 0.38 s 19 0.38 s 19 0.4 s 20 0.34 s 17 0.22 s 11
Italy 0.2 s 10 0.2 s 10
Austria 0.2 s 10 0.2 s 10 0.3 s 15 0.3 s 15 0.4 s 20
Belgium 0.5 s 25 0.5 s 25 0.16 s 8 0.16 s 8
Denmark
Finland
Ireland 0.5 s 25 0.5 s 25 0.74 s 37 0.74 s 37 0.36 s 18
Norway 0.34 s 17 0s 0
Sweden 0.24 s 12 0.24 s 12 0.24 s 12 0.74 s 37
Switz. 0.22 s 11 0.24 s 12 0.3 s 15 0.44 s 22 0.48 s 24
Portugal
Holland 0.24 s 12 0.24 s 12 0.5 s 25 0.5 s 25
Spain 0.16 s 8 0.16 s 8 0.16 s 8 0.16 s 8
Israel 0.24 s 12 0.24 s 12 0.48 s 24 0.48 s 24
USA
Asia
Australia 0.36 s 18 0.36 s 18 0.38 s 19 0.38 s 19 0.24 s 12

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SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Country 4160 4161 4162 4163 4164

France 4, 12.5 43(H)
Germany 0.48 s 24 3, 50 31(H)
UK/Univ 0.52 s 26 2s 100 4, 12.5 43(H)
Italy 4, 50 41(H)
Austria 0.4 s 20 4, 25 42(H)
Belgium 4, 12.5 43(H)
Denmark
Finland
Ireland 0.36 s 18 0.7 s 35 4, 12.5 43(H)
Norway 4, 75 40(H)
Sweden 4, 12.5 43(H)
Switz. 0.6 s 30 0.16 s 8 0.6 s 30 3, 50 31(H)
Portugal
Holland 4, 50 41(H)
Spain 4, 50 41(H)
Israel 4, 50 41(H)
USA
Asia
Australia 0.24 s 12 0.5 s 25 0.5 s 25 4, 50 41(H)

Country 4165/4166 4167/4168 4169

France 474 Hz 04(H) 74(H) 406 Hz 04(H) 06(H) 2s 100
Germany 4
UK/Univ
Italy
Austria
Belgium 1160Hz 11(H) 60(H) 1110Hz 11(H) 10(H) 4, 50% 41(H)
Denmark
Finland
Ireland
Norway
Sweden
Switz.
Portugal
Holland 563 Hz 05(H) 63(H) 76 Hz 00(H) 76(H) 1.1 s 55
Spain 620 Hz 06(H) 20(H) 580 Hz 05(H) 80(H) 1.5 s 75
Israel
USA
Asia
Australia

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

Country 416A 416B 416C 416D 416E/416F

France 12 s 75 1s 50 0.04 s 2 0 0
Germany 0 0
UK/Univ 0 0
Italy 0 0
Austria 0 0
Belgium 20 s 125 0.33 s 33 0.69 s 69 0 0
Only used
Denmark 0 0
by
Finland 0 0 Sweden:
Ireland 0 0 512 Hz
Norway 0 0 416E: 05(H)
Sweden 0 0 416F: 12(H)
Switz. 0 0
Portugal 0 0
Holland 20 s 125 1.1 s 55 0.08 s 4 0 0
Spain 12.8 s 80 0.72 s 36 0.1 s 5 3.04 s 19
Israel 0 0
USA 0 0
Asia 0 0
Australia 0 0

Country 4170/4171 4172 4173 4174

France
Germany
UK/Univ
Italy
Austria
Belgium
Denmark
Finland
Ireland
Norway
Sweden 340 Hz 03(H) 40(H) 1.02 s 51 20 s 125 0.26 s 13
Switz.
Portugal
Holland
Spain
Israel
USA
Asia
Australia

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SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Country 4175 4176 4177 4178

France 0 0 0 0 0 0
Germany 0 0 0.3 s 15 90 ms 90
UK/Univ 0 0 0.3 s 15 90 ms 90
Italy 0 0 0.3 s 15 90 ms 90
Austria 0 0 0.3 s 15 90 ms 90
Belgium 0 0 2s 100 90 ms 90
Denmark 0 0 0.3 s 15 90 ms 90
Finland 0 0 0.3 s 15 90 ms 90
Ireland 0 0 0.3 s 15 90 ms 90
Norway 0 0 0.5 s 25 90 ms 90
Sweden 0.08 s 4 0 0 0.3 s 15 90 ms 90
Switz. 0 0 0.3 s 15 90 ms 90
Portugal 0 0 0.3 s 15 90 ms 90
Holland 0 0 0.3 s 15 90 ms 90
Spain 0 0 2s 100 90 ms 90
Israel 0 0 0.3 s 15 90 ms 90
USA 0 0 0 0 0 0
Asia 0 0 0 0 0 0
Australia 0 0 0 0 0 0

Country 4179/417A 417B 417C 417D

France 19 FF(H) 19(H) -53 C0(H) 53.8 s 21
Germany 00 FF(H) 00(H) -53 C0(H) 53.8 s 21 4
UK/Univ 010 F0(H) 10(H) 1s 50 -53 C0(H) 53.8 s 21
Italy 00 FF(H) 00(H) -53 C1(H) 53.8 s 21
Austria 00 FF(H) 00(H) -53 C0(H) 53.8 s 21
Belgium 00 FF(H) 00(H) -32.5 84(H) 58.9 s 23
Denmark 009 F0(H) 09(H) -32.5 80(H) 53.8 s 21
Finland 990 F9(H) 90(H) 2s 100 -32.5 80(H) 53.8 s 21
Ireland 16 FF(H) 16(H) -40.5 40(H) 53.8 s 21
Norway 095 F0(H) 95(H) -32.5 80(H) 53.8 s 21
Sweden 009 F0(H) 09(H) -32.5 80(H) 53.8 s 21
Switz. 00 FF(H) 00(H) -40.5 40(H) 92.2 s 36
Portugal 00 FF(H) 00(H) -32.5 80(H) 53.8 s 21
Holland 09 FF(H) 09(H) -29 00(H) 53.8 s 21
Spain 07 FF(H) 07(H) -40.5 40(H) 79.4 s 31
Israel 00 FF(H) 00(H) -53 C0(H) 58.9 s 23
USA -53 C0(H) 53.8 s 21
Asia -53 C0(H) 53.8 s 21
Australia -53 C0(H) 53.8 s 21

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

Country 417E 417F 4180 4182 (Hz) 4183 (Hz)

France 5 5 5 5 7.68 s 3 53.1 28 43.8 34
Germany 4 4 2 2 12.8 s 5 64.7 23 20.7 72
UK/Univ 3 3 2 2 12.8 s 5 19.8 75 11.6 128
Italy 3 3 2 2 17.92s 7 55.1 27 12.7 117
Austria 3 3 2 2 12.8 s 5 70.9 21 40.2 37
Belgium 4 4 6 6 15.36s 6 29.8 50 13.5 110
Denmark 3 3 1 1 12.8 s 5 29.8 50 19.6 76
Finland 3 3 2 2 12.8 s 5 32.3 46 17.3 86
Ireland 3 3 2 2 12.8 s 5 27.1 55 14.4 103
Norway 3 3 2 2 12.8 s 5 64.7 23 17.3 86
Sweden 3 3 2 2 12.8 s 5 30.3 49 19.1 78
Switz. 5 5 1 1 12.8 s 5 59.5 25 19.1 78
Portugal 3 3 1 1 12.8 s 5 64.7 23 12.5 119
Holland 3 3 1 1 12.8 s 5 29.2 51 20.1 74
Spain 3 3 1 1 48.64s 19 29.2 51 19.6 76
Israel 14 14 1 1 12.8 s 5 59.5 25 11.7 127
USA 3 3 5 5 12.8 s 5 23.3 64 11.7 127
Asia 3 3 5 5 12.8 s 5 23.3 64 11.7 127
Australia 10 10 5 5 15.36s 6 73.2 21 9.7 154

Country 4184 (Hz) 4185 (Hz) 4186 4187 4188

France 1 1 0.1 s 5 0.1 s 5
Germany 1 1 0.2 s 10 0.2 s 10
UK/Univ 49.6 30 17.3 86 1 1 0.2 s 10 0.2 s 10
Italy 2 2 0.2 s 10 0.2 s 10
Austria 1 1 0.2 s 10 0.2 s 10
Belgium 2 2 0.1 s 5 0.2 s 10
Denmark 59.5 25 40.2 37 1 1 0.2 s 10 0.2 s 10
Finland 62.0 24 19.3 77 2 2 0.5 s 25 0.5 s 25
Ireland 1 1 0.2 s 10 0.2 s 10
Norway 1 1 0.3 s 15 0.3 s 15
Sweden 55.1 27 24.0 62 1 1 0.1 s 5 0.1 s 5
Switz. 3 3 0 0 0 0
Portugal 59.5 25 40.2 37 1 1 0.2 s 10 0.2 s 10
Holland 59.5 25 40.2 37 1 1 0.2 s 10 0.2 s 10
Spain 39.2 38 19.3 77 2 2 0.2 s 10 0.2 s 10
Israel 2 2 0.1 s 5 0.1 s 5
USA 74.4 20 22.2 67 1 1 0.2 s 10 0.2 s 10
Asia 57.2 26 22.2 67 1 1 0.2 s 10 0.2 s 10
Australia 3 3 0.2 s 10 0.2 s 10

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SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Country 4189 418A 418B 418C 418D

France 3.8 s 95 67 ms 67 67 ms 67 33 ms 33 50 ms 50
Germany 8 s 200 53 ms 53 57 ms 57 41 ms 41 50 ms 50
UK/Univ 8 s 200 255ms 255 61 ms 61 33 ms 33 50 ms 50
Italy 8 s 200 61 ms 61 60 ms 60 40 ms 40 50 ms 50
Austria 8 s 200 53 ms 53 61 ms 61 39 ms 39 50 ms 50
Belgium 8 s 200 61 ms 61 67 ms 67 33 ms 33 50 ms 50
Denmark 8 s 200 53 ms 53 67 ms 67 33 ms 33 50 ms 50
Finland 8 s 200 61 ms 61 56 ms 56 42 ms 42 50 ms 50
Ireland 8 s 200 255ms 255 67 ms 67 33 ms 33 50 ms 50
Norway 8 s 200 61 ms 61 59 ms 59 41 ms 41 50 ms 50
Sweden 8 s 200 100ms 100 60 ms 60 40 ms 40 70 ms 70
Switz. 8 s 200 60 ms 60 60 ms 60 40 ms 40 60 ms 60
Portugal 8 s 200 61 ms 61 66 ms 66 34 ms 34 50 ms 50
Holland 8 s 200 61 ms 61 61 ms 61 39 ms 39 50 ms 50
Spain 6 s 150 75 ms 75 60 ms 60 33 ms 33 75 ms 75
Israel 8 s 200 61 ms 61 61 ms 61 39 ms 39 50 ms 50
USA 8 s 200 80 ms 80 62 ms 62 41 ms 41 80 ms 80
Asia 8 s 200 61 ms 61 66 ms 66 34 ms 34 50 ms 50
Australia 8 s 200 255ms 255 66 ms 66 34 ms 34 70 ms 70

Country 418E 418F 4190 4191 4192

France 0.8 s 40 0 0 70 ms 70 70 ms 70 15 15
Germany 0.92 s 46 0.92 s 46 90 ms 90 90 ms 90 7 7 4
UK/Univ 0.54 s 27 0.66 s 33 0.1 s 100 0.1 s 100 9 9
Italy 0.8 s 40 3s 150 70 ms 70 70 ms 70 6 6
Austria 0.88 s 44 0.92 s 46 70 ms 70 70 ms 70 6 6
Belgium 0.86 s 43 0.52 s 26 70 ms 70 70 ms 70 6 6
Denmark 0.52 s 26 0.52 s 26 90 ms 90 90 ms 90 9 9
Finland 0.8 s 40 1.2 s 60 70 ms 70 75 ms 75 9 9
Ireland 0.6 s 30 0.66 s 33 70 ms 70 70 ms 70 9 9
Norway 0.66 s 33 0.66 s 33 70 ms 70 70 ms 70 9 9
Sweden 0.8 s 40 0.52 s 26 70 ms 70 70 ms 70 9 9
Switz. 0.52 s 26 0 0 70 ms 70 70 ms 70 6 6
Portugal 0.66 s 33 0.66 s 33 70 ms 70 70 ms 70 9 9
Holland 0.66 s 33 0.66 s 33 70 ms 70 70 ms 70 9 9
Spain 0.64 s 32 2s 100 70 ms 70 0.14 s 140 6 6
Israel 0.92 s 46 2.02 s 101 90 ms 90 90 ms 90 6 6
USA 0.8 s 40 2.02 s 101 0.1 s 100 0.1 s 100 8 8
Asia 0.72 s 36 2.02 s 101 0.1 s 100 0.11 s 110 6 6
Australia 0.8 s 40 2.02 s 101 0.1 s 100 0.11 s 110 10 10

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
NCU PARAMETERS

Additional NCU Parameters

V.21 detection level (RAM Address 4193, hex code): All 73(H), except Germany [7B(H)].
Rx data detection level (RAM Address 4194, hex code): All 73(H), except Germany [7B(H)].
800 Hz tx level (RAM Address 4195/4196, hex): All 31BF(H), except Germany [2641(H)].
1100 Hz tx level (RAM Address 4197/4198, hex): All 31BF(H), except Germany [2917(H)].
2100 Hz tx level (RAM Address 4199/419A, hex): All 31BF(H), except Germany [3774(H)].

Ringback Tone Detection Parameters for Auto Select Reception Mode

In Auto Select mode, the machine waits for CED if it receives a ringing signal. If it does not re-
ceive CED, it rings the buzzer and sends a ringback tone back through the network to the
transmitter. The frequency and cadence of this generated ringback tone are determined by
the following RAM addresses. These RAMs are not changed by the country code. If the re-
quired values differ from the default values, they must be adjusted at installation if necessary.
A table of default values and values for various countries follows the RAM address table.

Address Function Unit Remarks

Ringback tone frequency (high F is the required frequency
41CF
byte) 65536F/9600 in Hz. Convert the
Ringback tone frequency (low byte) (Hex) obtained value to hex
41D0 code.
41D1 On time: range 1
41D2 Off time: range 1 20 ms
41D3 On time: range 2
41D4 Off time: range 2

Country Frequency (Hz) Cadence

Europe ver- 430 (0B77 is stored in RAM) 0.4 s on/0.2 s off (RAM: On times, 14[H], Off
sion defaults times, 0A[H])
Asia version 400 (0AAB is stored in RAM) 1 s on/2 s off (RAM: On times, 32[H], Off
defaults times, 64[H])
Austria The Europe default value is 1 s on/5 s off (RAM: On 32[H], Off FA[H])
Belgium acceptable. 1 s on/3 s off (RAM: On 32[H], Off 96[H])
Denmark 1 s on/4 s off (RAM: On 32[H], Off C8[H])
Finland 1 s on/4 s off (RAM: On 32[H], Off C8[H])
France 1.5 s on/3.5 s off (RAM:On 4B[H],Off AF[H])
Germany 1 s on/4 s off (RAM: On 32[H], Off C8[H])
UK, Ireland The Europe default value is acceptable.
Italy 1 s on/4 s off (RAM: On 32[H], Off C8[H])
Holland 1 s on/4 s off (RAM: On 32[H], Off C8[H])
Norway 1 s on/4 s off (RAM: On 32[H], Off C8[H])
Portugal 1 s on/5 s off (RAM: On 32[H], Off FA[H])
Spain 1.5 s on/3 s off (RAM:On 4B[H],Off 96[H])
Sweden 1 s on/5 s off (RAM: On 32[H], Off FA[H])
Switzerland 1 s on/4 s off (RAM: On 32[H], Off C8[H])
USA The Asia default value is The Asia default value is acceptable.
Japan acceptable.

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SERVICE TABLES AND PROCEDURES November 30th, 1991
DEDICATED TRANSMISSION PARAMETERS

4.4. DEDICATED TRANSMISSION PARAMETERS

Each Quick Dial Key and Speed Dial Code has three bytes of programmable
parameters allocated to it. If transmissions to a particular machine often expe-
rience problems, store that terminal’s fax number as a Quick Dial or Speed
Dial, and adjust the parameters allocated to that number.
The programming procedure will be explained first. Then, the three bytes will
be described.
4.4.1. Programming Procedure

1. Set bit 5 of bit switch 01 to 1.

2. Either use Function 32 (for a Quick Dial number) or Function 33 (for a
Speed Dial number)
Example: Change the Parameters in Quick Dial 10.

3. Function 3 2 Yes QUICK QUICK/∇

PRINT LIST ∇

4. Press Quick Dial key 10 QUICK 10 Y/N

SET PARAMETER?

Note: When selecting Speed Dial 10

with Function 33: 1 0 at the ten key pad
4
5. Yes TX PARAMETER 1 Y
1111 1111

6. The settings for byte 1 are now displayed. Press a number from 0 to 7
corresponding to the bit that you wish to change.

Example: Change bit 7 to 0: 7 TX PARAMETER 1 Y

0111 1111

7. Either:

• Select another byte: Yes until the correct byte is displayed. Then go
to step 6. If you press Yes while byte 3 is displayed, you can go back
to step 4 and select another number.

• Finish: Function

8. After finishing, set bit 5 of bit switch 01 to 0.

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November 30th, 1991 SERVICE TABLES AND PROCEDURES
DEDICATED TRANSMISSION PARAMETERS

4.4.2. Parameters

Byte 1
FUNCTION COMMENTS
0 Initial Tx modem rate If training with a particular remote terminal
Bit 1 Bit 0 Setting always takes too long, the initial modem rate
1 0 0 9,600 bps may be too high. Reduce the initial Tx modem
0 1 7,200 bps rate using these bits.
1 0 4,800 bps
1 1 2,400 bps
2 Tx level If communication with a particular remote
Bit 2 3 4 5 Level terminal often contains errors, the signal level
3 (dBm) may be inappropriate. Adjust the Tx level for
0 0 0 0 0 communications with that terminal until the
4 0 0 0 1 -1 results are better.
0 0 1 0 -2
5 0 0 1 1 -3
and so on until
1 1 1 1 -15
6 Not used Do not change the factory setting.
7 Dedicated transmission parameters 0: The parameters in these three bytes will be
for this Quick/Speed Dial number ignored. The current settings of the relevant bit
0: Disabled 1: Enabled switches, NCU parameters, and RAM addresses
will be used.
1: The parameters in these three bytes will be
used when transmitting to the fax number
stored in the Quick Dial Key or Speed Dial Code
that these bytes are allocated to.

Byte 2
FUNCTION COMMENTS
0 DIS/NSF detection method Set this bit to 1 if echoes on the line are
0: First DIS or NSF interfering with the set-up protocol at the start of
1: Second DIS or NSF transmission. The machine will then wait for the
second DIS or NSF before sending DCS or NSS.
1 ECM during transmission For example, if ECM is switched on but is not
0: Enabled wanted when sending to a particular terminal,
1: Disabled set this bit to 1.
2 Not used Do not change the factory settings.
3
4
Continued on the next page

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SERVICE TABLES AND PROCEDURES November 30th, 1991
DEDICATED TRANSMISSION PARAMETERS

Byte 2
FUNCTION COMMENTS
Compression modes available in These bits determine the capabilities that are
transmit mode informed to the other terminal during
5 Bit 6 5 Modes transmission.
0 0 MMR, MR, or MH
6 0 1 MR or MH
1 0 MH only
1 1 MH only
7 Short preamble If this bit is 1, Short Preamble is always used
0: Disabled when transmitting to this terminal.
1: Enabled

Byte 3
FUNCTION AND COMMENTS
CCITT T1 timer
If you wish to use a different T1 timer than the NCU parameter setting when sending to
a particular terminal, adjust this byte. The T1 timer is the BCD value of this byte, multi-
plied by 2.56 seconds.

Caution: Note that if the value of this byte is 0, the T1 timer will be 35 s.

Caution: If the value of byte 3 is 0, the CCITT T1 timer is 35 s, which

may not be appropriate for your area. Therefore, every time you
program a set of dedicated transmission parameters, be sure to 4
check the contents of byte 3 and adjust if necessary.

4-41
November 30th, 1991 SERVICE TABLES AND PROCEDURES
USEFUL RAM ADDRESSES

4.5. USEFUL RAM ADDRESSES

4044
Bit 0: Remote transfer 0: Enabled, 1: Disabled
Bit 2: Forwarding 0: Enabled, 1: Disabled
Bit 3: Authorized reception 0: Enabled, 1: Disabled
Bit 5: Remote control features 0: Enabled, 1: Disabled
Bit 6: Continuous polling 0: Disabled, 1: Enabled
4045
Bit 0: Display of both RTI and CSI on the LCD 0: Disabled, 1: Enabled
Bit 2: Printout of forwarded messages 0: Disabled, 1: Enabled
4047: Number of page retransmission attempts (Hex code)
4048
Bit 5: Stop key during memory transmission 0: Disabled, 1: Enabled
Bit 6: First page to be retransmitted (memory tx)
0: The page that was not sent correctly, 1: Page 1
4049
Bit 0: Keystroke Program execution method
0: Press the programmed Quick Dial Key
1: Press the programmed Quick Dial Key then the Start key
Bit 2: RDS 0: Enabled, 1: Disabled
Bit 3: On-hook dial 0: Enabled, 1: Disabled
Bit 4: Hold 0: Enabled, 1: Disabled

404B: Contrast threshold - Lighten (Hex code, from 00 to 1F) 00: All Black, 1F: All White
404C: Contrast threshold - Normal (Hex code, from 00 to 1F) 00: All Black, 1F: All White
404D: Contrast threshold - Darken (Hex code, from 00 to 1F) 00: All Black, 1F: All White
4053 Bit 0: Default resolution used for copy mode 0: As selected by the user, 1: Fine
4054 Bit 0: Reduction during printing 0: Disabled, 1: Enabled
4055
The amount of remaining memory below which ringing detection (and therefore substitute re-
ception) is disabled if the printer is out of action (hex code, from 00 to FF, unit = kbytes)
• One page is about 24 kbytes
• If this is kept at 0, the machine will detect ringing signals and go into receive mode even if
there is no memory space left. This will result in communication failure.

4057
Image/Text detection threshold in halftone mode (Hex: 00 - 1F)
• 01: Almost all the data will be processed without halftone, even if the fax message contains
photographs.
• The threshold increases with increments in the setting from 01 to 1F.
• 00, 1F: Almost all the data will be halftone processed, even if the fax message contains
only text.

4058: Number of redialling attempts, including the first dialling attempt (memory tx)
Hex : 00 - FF
4059: Redialling interval (memory tx) Hex: 00 - FF (minutes)
405D: Time for which RDS is enabled after the user has switched it on BCD: 00 - 99 (hours)

4-42
SERVICE TABLES AND PROCEDURES November 30th, 1991
USEFUL RAM ADDRESSES

Factory Settings
The factory settings of the above RAM addresses are shown below in hexa-
decimal code. The first digit represents bits 7 to 4, and the second digit repre-
sents bits 3 to 0.
Universal version

RAM Setting RAM Setting RAM Setting

4044 00 404B 12 4055 40
4045 00 404C 10 4057 08
4047 03 404D 0E 4058 05
4048 08 4053 00 4059 05
4049 0A 4054 00 405D 24

Asia version

RAM Setting RAM Setting RAM Setting

4044 00 404B 12 4055 00
4045 00 404C 10 4057 08
4047 03 404D 0E 4058 05
4048 08 4053 00 4059 05
4049 02 4054 00 405D 24

The following tables show the changes in the factory settings with the differ-
ent country code settings.
Table 1: Based on the Universal version 4
Country Code Differences (switch settings given in Hex code)
France 00 None
Germany 01 4044: 20, 4045: 01, 4049: 18
UK None (the settings for the Universal version are based
02
on those required for the UK)
Italy 03 None
Austria 04 4049: 0B
Belgium 05 None
Denmark 06 None
Finland 07 None
Ireland 08 None
Norway 09 None
Sweden 0A None
Switzerland 0B None
Portugal 0C None
Holland 0D None
Spain 0E None

4-43
November 30th, 1991 SERVICE TABLES AND PROCEDURES
SPECIAL TOOLS AND LUBRICANTS

Table 2: Based on the Asia version (Country code 12)

Country Code Differences (switch settings given in Hex code)

Israel 0F None
Hong Kong 14
South Africa 15
Australia 16
New Zealand 17
Singapore 18
Malaysia 19

Note: When programming a RAM address, you have to enter the bank
number before the four-digit RAM address. In the Type A model, the
bank number is 1; in the Type B model, it is 2. For example, to pro-
gram RAM address 4044 in the Type B model using Function 95, you
have to input 24044.

4.6. SPECIAL TOOLS AND LUBRICANTS

Scan line test chart and 8 line/mm test pattern: P/N H0539500
Test lead: P/N H0419002
SBU adjustment knobs: P/N H0539501

4-44
REPLACEMENT AND ADJUSTMENT November 30th, 1991
COVERS

5. REPLACEMENT AND ADJUSTMENT

5.1. COVERS

5.1.1. Top Cover [A]

[A]

[A]: 4 screws

5.1.2. Front [B] and Rear [C] Covers

[A]

[C]
5
[B]: 3 screws
[C]: 5 screws, 1 washer

[B]

Caution: Do not damage the cable at the front left side of the machine.

5-1
November 30th, 1991 REPLACEMENT AND ADJUSTMENT
SCANNER

5.2. SCANNER
[A]
5.2.1. ADF Clutch [B] and Pick-up [H] and Feed [I] Rollers

[E]

[C]

[B]

[A]: 2 screws
[B]: 1 E-ring
[D] [E]: 4 screws

• First, remove the front and rear covers (see section 5-1).

Reassembly
• Place stopper [C] astride bracket [D] as shown, so that rotation of the
clutch body will be prevented.
• Hold the ADF clutch harness by the cord keep, to move it away from
gears and timing belts.
[J]

[H]

[G]

[I]
[F]

[F]
[H]: 1 spring washer
[J]: 1 Allen screw
3 clips

• If you need to disassemble the one-way clutch [J], see the diagram.

Caution: Do not touch the rubber surface of the new rollers, or

document feed problems will occur sooner than normal.

5-2
REPLACEMENT AND ADJUSTMENT November 30th, 1991
SCANNER

5.2.2. Separation Roller [F]

[B]

[A]

[C] [B]: 2 screws (1 with ground)

[C]: 1 screw

[D] [E]

[D]: 2 screws
[E]: 4 screws

[F]
[F]: 2 screws

• When removing [A], lift it up by the part that hangs down just above the
5
document feed area, and ease it off over the cover release button.
• When replacing [A], pull down the part of the cover that hangs above
the document feed-out area, so that the pegs on the inside of the cover
fit into the slots in the bracket above the document feed-out area.

Caution: Do not touch the rubber surface of the new rollers, or

document feed problems will occur sooner than normal.

There are no separation roller adjustments in this model.

5-3
November 30th, 1991 REPLACEMENT AND ADJUSTMENT
SCANNER

5.2.3. Tx Motor [D] [B]

[A]

[C]

[A], [B]: 1 E-ring, 1 screw

[C]: 2 screws
[D]: 2 screws [D]

• First remove the top and rear covers (see section 5-1), the ADF clutch
cover (see section 5-2-1, item [A]), and the thermal head (see section 5-
3-2).

Reassembly
• Before replacing the ADF clutch cover, adjust the timing belts as shown
below.

5.2.4. Timing Belt Tension Adjustments

[B] 2 mm
650 ± 100 gf
[A]

2 mm 500 ± 100 gf

• Loosen screw [A], adjust the belt, then tighten screw [A].
• Loosen screw [B], adjust the belt, then tighten screw [B].

5-4
REPLACEMENT AND ADJUSTMENT November 30th, 1991
SCANNER

5.2.5. Xenon Lamp [F] [D]

[A] [E]

[C]
[B]

[F]

[A]: 2 screws
[B]: 4 screws
[C]: 1 E-ring
[D]: 1 E-ring, 1
bushing
[E]: 2 screws

• First remove the top and rear covers (see section 5-1), the ADF clutch
(see section 5-2-1), and the lower ADF guide plate ([E] in section 5-2-2).

Caution: Keep the exposure glass [A] in a safe place.

Reassembly
• Test the new lamp before reassembly.
• Clean the exposure glass with a soft cloth before putting it back. Do not
get fingerprints on the exposure glass.
• After reassembly, check the tension of the tx motor timing belts (see
section 5-2-4).

5.2.6. Xenon Lamp Driver [A]

[A]

[A]: 3 screws

• First, remove the top cover (see section 5-1).

5-5
November 30th, 1991 REPLACEMENT AND ADJUSTMENT
SCANNER

5.2.7. SBU [B]

[B]
[A]: 2 screws
[B]: 2 screws

[A]

• First, remove the top cover (see section 5-1).

• After installing a new SBU, do the following adjustments, in sequential
order.

5.2.8. SBU Adjustments

Tools Required
• Scan line test chart and 8 line/mm test pattern: P/N H0539500
• Test lead: P/N H0419002
• SBU adjustment knobs: P/N H0539501
• Allen wrench

Preparation
1. Remove the top cover (see section 5-1) and the SBU cover (see section
5-2-7, item [A]).
2. Set the oscilloscope scale to 0.2 V/unit (vertical) and 0.5 ms/unit (horizon-
tal).
3. Connect the test lead to CN21 on the FCU.
4. Connect the oscilloscope probe to pin 1 (blue wire) and the ground to pin
4 (black wire).
5. Clean the white pressure plate with a soft cloth and alcohol.
6. Light the xenon lamp (see section 4-1-10).

5-6
REPLACEMENT AND ADJUSTMENT November 30th, 1991
SCANNER

Adjustments
1. White Level
[B]

[B]

[A]

• Fit the adjustment knobs [A] through the slots in the SBU as shown.
• Loosen the SBU securing screws [B].
• Remove any test charts that are on the exposure glass.
• Check that the white level waveform can be seen fully across the oscillo-
scope. If it cannot be seen properly, turn the adjustment knobs.
• Carefully tighten the SBU securing screws.

If the waveform has irregular patches, the lens, mirror, exposure glass,
white pressure plate, or CCD may be dirty.
If the waveform is lower at the ends than in the middle, the xenon lamp
may be wearing out.
If the waveform has sharp peaks or dropouts, the CCD may be defective.

2. Flatness

[B]
A
B

0.2 V

5
[A]
0.5 ms
In the oscilloscope waveform, (A-B)/A must be less than 0.25. If it is not, do
the following.
• Remove any test charts that are on the exposure glass.
• Loosen the shading plate securing screws [A].
• Move the shading plate [B] back and forth until the waveform meets the
requirements.
• Tighten the shading plate securing screws.

5-7
November 30th, 1991 REPLACEMENT AND ADJUSTMENT
SCANNER

3. Focusing (MTF)
[A]

A B

[B]
0.2 V

0.5 ms

• Place the 8 line/mm test pattern on the exposure glass.

• Loosen the lens securing screw [A] (Allen screw).
• Move the lens [B] back and forth until B is maximized (see the diagram
on the right).
• Tighten the lens securing screw.

4. Reduction Rate

[B]

[A]

0.2 V 1 2 3 4 5 6 7 8

0.5 ms

• Place the 8 line/mm test pattern on the exposure glass.

• Loosen the lens block securing screws [A].
• Move the lens block [B] back and forth until the signal has 8 or fewer
crosspoints.
• Tighten the lens block securing screws.
Note: Tighten each screw little by little alternately.

5-8
REPLACEMENT AND ADJUSTMENT November 30th, 1991
SCANNER

5. Scan Line

[A]

0.2 V

0.5 ms
• Place the scan line test chart
[A] on the exposure glass as shown.
• Loosen the SBU securing screws (see procedure 1).
• Adjust the waveform with the adjusting knobs until the waveform is as
shown on the right.

6. Scan Start Position

[A] AVIDEO
signal

VADJ
signal
•
•
Place the scan line test chart [A] on the exposure glass as shown.
Connect the oscilloscope to the test lead as follows: Channel 1 to
5
AVIDEO (pin 1 - blue wire), channel 2 to VADJ (pin 2 - red wire), and
connect up the ground to pin 4 (black wire).
• Set the oscilloscope scales as follows:
Vertical - CH1 0.2 V/unit, CH2 2 V/unit; Horizontal - 2 µs/unit.
• Gently tap the SBU until the waveform is as shown on the right.
The peak of AVIDEO must be within 4 bits of the peak of VADJ.
• Reset the oscilloscope to the original settings and repeat procedure 5
(Scan Line). It may be necessary to recheck procedures 5 and 6 until
the scan line is perfectly positioned.
• Tighten the SBU securing screws.

5-9
November 30th, 1991 REPLACEMENT AND ADJUSTMENT
PRINTER

5.3. PRINTER
[C]
5.3.1. Rx Motor [D]
[A]: 2 screws
[B]: 2 screws
[D]: 2 screws

[B]

[D] [A]

• First, remove the rear cover (see section 5-1), and the NCU and PSU
(see section 5-4).

5.3.2. Thermal Head [C] [A]

[G]

[F]
[A]: 2 screws
[B]: 1 screw
[C] [B]
[E]
Caution: [D]
• Do not touch the heating elements of the new thermal head.
• Check that the new thermal head is properly positioned and that the
springs pushing the head against the platen roller are in position.

Reassembly
• Fit pin [D] into slot [E] at the front, then fit pin [F] into slot [G] at the rear.
• When replacing plate [B], fit the pegs on the plate into the indents on
the main body.
• Program the pulse width (Function 99; see section 4-1-19).

5-10
REPLACEMENT AND ADJUSTMENT November 30th, 1991
PRINTER

5.3.3. Cutter [C] [A]

[B]

[C]
[A]: 1 screw
[B]: 2 screws
[C]: 2 screws

• First, remove the cover on the left side of the machine above the copy
exit (2 screws). This allows the upper unit to be opened a little more
than usual.
• Then remove the rear cover (see section 5-1).

Reassembly: [D]

• Clearance [D] must be 0.3 mm. To adjust [D], loosen the screws that
hold the cutter [C], and move the cutter back and forth until the clear-
ance is correct.

5-11
November 30th, 1991 REPLACEMENT AND ADJUSTMENT
PCBs

5.4. PCBs
[B]
[A]
5.4.1. FCU [E] and Battery [F]
[A]: 2 screws
[B]: 2 screws
[F]: 1 screw

[D]

[F]

[E] [C]

Machines with SAF memory: If possible, print a File List and all the mes-
sages stored in the memory before starting.

Caution: Do not dislodge the jumper switch on the MBU board, or the
machine will have to be reprogrammed.

Reassembly:
Machines with SAF memory: The SAF memory has been erased. The user
must reprogram files for transmission that were erased, and must also con-
tact the senders of messages that were received into memory and erased
(see the File List). Polling transmission files have also been lost.
5.4.2. Memory

See the previous diagram; the memory is item [C].

5-12
REPLACEMENT AND ADJUSTMENT November 30th, 1991
PCBs

5.4.3. MBU

See the previous diagram; the MBU is item [D].

Before removal, do the following.
• If possible, print all the user reports and give them to the user.
• If possible, make a note of the user’s current on/off switch settings
(Function 61) and ID codes (Function 52). Also, if the user has stored
some Auto Documents and Function Programs (see the Quick Dial
List), make a note of where each of these were stored.
• If possible, print the following reports and keep them for reference: Sys-
tem Report, Service Monitor Report, Telephone List (service mode, with
dedicated tx parameters).
Reassembly:
• Reset the RAM on the new MBU board: to do this take out the battery
jumper, then replace it after a few seconds. Make sure that the switch
position is ON.
• On the old MBU board, turn the battery switch to OFF.

After reassembly:
• Make a few copy and communication tests.
• Program the thermal head pulse width (Function 99).
• Reprogram the following: RAM addresses that had been changed from
the factory settings before the MBU failed, dedicated tx parameters,
items listed on the System Report, serial number
• Instruct the user to reprogram the following items: Quick/Speed/Group
Dial, date and time, keystroke programs, polling reception files, ID
codes, Personal Codes, User Parameters, and other user functions.

• Machines with SAF memory: The SAF memory has been erased. The
user must reprogram files for transmission that were erased, and must
also contact the senders of messages that were received into memory
and erased (see the File List). Polling transmission files have also been
lost.
5
Caution: The MBU for the Type A model is not interchangeable with the
MBU for the Type B model.

5-13
November 30th, 1991 REPLACEMENT AND ADJUSTMENT
PCBs

5.4.4. PSU [A] and NCU [B]

[A], [B]: 4 screws [B]

[A]
• First, remove the rear cover (see section 5-1).

Note: Do not touch the PSU components. They may be hot.

5.4.5. Operation Panel [B]

[A]

[B]

[A], [B]: 3 screws

5-14
TROUBLESHOOTING November 30th, 1991
COPY QUALITY TROUBLESHOOTING

6. TROUBLESHOOTING
6.1. COPY QUALITY TROUBLESHOOTING

6.1.1. Received Copies

If there is no fault in the transmitting terminal or on the line, but the copy qual-
ity is bad, either:
• Check that the printer cover is closed properly.
• Check the thermal head pulse width.
• Clean the thermal head (soft cloth, do not use water)
• Replace the thermal head or FCU.

If the output is always stretched: Check the printer mechanism.

6.1.2. Copies made in Copy Mode

The following faults must be considered in addition to the printer faults men-
tioned above.

Symptom Causes Remedies

Blank or black copies Blocked optical path Check the optical path.
Scanner or PCB failure Replace FCU or SBU.
Vertical lines Dirty mirror, lens, exposure Clean with a soft cloth.
glass, or xenon lamp
Error bit in CCD Replace SBU.
Uneven density Scan line out of position See the SBU adjustments
(section 5-2).
Dirty mirror, lens, exposure Clean with a soft cloth.
glass, or xenon lamp
Old xenon lamp Replace.
Magnification Check the reduction rate. See the SBU adjustments
Blurred characters Adjust the focusing. (section 5-2).
Adjust the reduction rate.
Filled-in characters Adjust the reduction rate.
Side-to-side registration Adjust the scan start
error position.
One side darker than the Check the CCD waveform
other flatness.
Partial scanning Scan line is out of position
Stretched output Defective scanner timing belt Replace.

6-1
November 30th, 1991 TROUBLESHOOTING
MECHANICAL PROBLEMS

6.2. MECHANICAL PROBLEMS

If there is a mechanical problem that cannot be solved easily, try using the fol-
lowing troubleshooting flow charts, while referring to the point-to-point dia-
gram. The flow charts may not be comprehensive, but they may help you to
find the problem.
6.2.1. ADF/Scanner

Symptom: Non feed

Check Action if Yes Action if No
1. Are the covers closed Go to step 2. Close the covers securely.
properly?
2. Are the rollers in the ADF Go to step 3. Clean the rollers with a soft
entrance clean? cloth and water.
3. Are the gears and spring Go to step 4. Clean the gears and
clutches clean and work- clutches. Remove any
ing properly? debris from the mechanism.
4. Are the connections be- Connect the cables properly. Go to step 5.
tween the PSU, FCU, and
cover switch loose?
5. Does the FCU receive Go to step 10. Go to step 6.
+ 24VD from the PSU
when a document is
placed in the feeder?
6. Does the signal from the If CLOSE COVER is not Change the cover switch
cover switch change displayed when the cover is and/or the actuator
when the cover is opened open, change the FCU or mechanism.
and closed? the operation panel drive
PCB. Go to step 7.
7. Are the connections be- Connect the cables properly. Go to step 8.
tween the operation
panel, FCU, and docu-
ment sensor loose?
8. Does the LCD prompt Go to step 9. Replace the document
change when a docu- sensor, operation panel
ment is placed in the PCB, or FCU.
feeder?
9. Does the FCU send the Replace the PSU. Replace the FCU.
+ 24VD activation signal
to the PSU when a docu-
ment is placed in the
feeder?
10. Are the connections be- Connect the cables properly. Go to step 11.
tween the PSU, FCU, and
the tx motor loose?
11. Does the tx motor work? Go to step 13. Go to step 12.
12. Does the FCU output Replace the tx motor. Replace the FCU.
power and phase drive
signals to the tx motor?

6-2
TROUBLESHOOTING November 30th, 1991
MECHANICAL PROBLEMS

Symptom: Non feed

Check Action if Yes Action if No
13. Are the connections be- Connect the cables properly. Go to step 14.
tween the PSU and the
ADF clutch loose?
14. Does the FCU send the Replace the ADF clutch. Replace the FCU.
power and drive signals
to the ADF clutch at the
correct time?

Symptom: Skew
Check Action if Yes Action if No
1. Are the scanner rollers Replace the separation Clean the rollers:
clean? roller and or separation Metal - soft cloth and alcohol
plate. Rubber - soft cloth and water

Symptom: Jam
Check Action if Yes Action if No
1. Are the scanner rollers Go to step 2. Clean the rollers:
clean? Metal - soft cloth and alcohol
Rubber - soft cloth and water
2. Is the document feed Go to step 3. Remove any debris.
path blocked?
3. Is the scanner mecha- Go to step 4. Correct the problem.
nism in good shape?
4. Are the connections be- Connect the cables properly. Go to step 5.
tween the operation
panel, FCU, and scan line
sensor loose?
5. Does the operation panel Replace the operation panel Replace the scan line sensor.
PCB receive signals from PCB or FCU.
the scan line sensor?

Symptom: Abnormal noise

Check Action if Yes Action if No
1. Is the machine assembled Go to step 2. Correct the problem.
properly?
2. Are the springs and Replace the tx motor or the Clean them.
clutches in the paper FCU.
feed/pick-up mechanism
clean?

6-3
November 30th, 1991 TROUBLESHOOTING
MECHANICAL PROBLEMS

Symptom: Double feed

Check Action if Yes Action if No
1. Is the problem solved by Finished Try cleaning or replacing the
cleaning or lubricating separation plate. If that does
the separation roller? not help, go to step 2.
2. Replace the separation roller.

Symptom: Dirty document

Check Action if Yes Action if No
Clean the rollers and guide plates.
Metal - soft cloth and alcohol
Rubber - soft cloth and water

Symptom: Second page not fed in

Check Action if Yes Action if No
1. Are the connections be- Connect the cables properly. Go to step 2.
tween the operation
panel, FCU, and scan line
sensor loose?
2. Does the operation panel Replace the operation panel Replace the scan line sensor.
PCB receive signals from PCB or FCU.
the scan line sensor?

6-4
TROUBLESHOOTING November 30th, 1991
MECHANICAL PROBLEMS

6.2.2. Printer

Symptom: Non feed

Check Action if Yes Action if No
1. Is the printer jammed with Clear the debris. Go to step 2.
debris?
2. Is the printer cover closed Go to step 3. Close the cover.
properly?
3. Are the connections be- Connect the cables properly. Go to step 4.
tween the PSU, FCU, and
cover sensor loose?
4. Does the FCU receive Go to step 8. Go to step 5.
+ 24VD from the PSU
when a ringing signal is
detected or when Copy is
pressed?
5. Does the signal from the If CLOSE COVER is not Change the cover switch
cover switch change displayed when the cover is and/or the actuator
when the cover is opened open, change the FCU or mechanism.
and closed? the operation panel drive
PCB. Go to step 6.
6. Are the connections be- Connect the cables properly. Go to step 7.
tween the FCU, NCU, and
telephone line loose?
7. Does the FCU send the Replace the PSU. Replace the FCU or NCU.
+ 24VD activation signal
to the PSU when a ring-
ing signal is detected or
when Copy is pressed?
8. Are the connections be- Connect the cables properly. Go to step 9.
tween the FCU and the
paper end sensor loose?
9. Does the Replace Paper Initialize the sensors (see Go to step 10.
indicator light when pa- section 4-1-17). If a sensor
per is present? is defective, replace it. Go to
step 11.
10. Does the signal from the Change the FCU. Replace the paper end
paper end sensor change sensor.
in the correct way?
11. Are the connections be- Connect the cables properly. Go to step 12.
tween the PSU, FCU, and
the rx motor loose?
12. Does the FCU output Replace the rx motor. Replace the FCU.
power and phase drive
signals to the rx motor?

6-5
November 30th, 1991 TROUBLESHOOTING
MECHANICAL PROBLEMS

Symptom: Jam
Check Action if Yes Action if No
1. Is the printer jammed with Clear the debris. Go to step 2.
debris?
2. Initialize the sensors. Is Go to step 5. Go to step 3.
the printer jam sensor
good?
3. Are the connections be- Connect the cables properly. Go to step 4.
tween the printer jam sen-
sor and the FCU loose?
4. Does the signal from the Change the FCU. Replace the printer jam
printer jam sensor sensor.
change correctly?
5. Are the connections be- Connect the cables properly. Go to step 6.
tween the FCU and the
paper end sensor loose?
6. Does the Replace Paper Initialize the sensors (see Go to step 7.
indicator light when pa- section 4-1-17). If a sensor
per is present? is defective, replace it. Go to
step 8.
7. Does the signal from the Change the FCU. Replace the paper end
paper end sensor change sensor.
in the correct way?
8. Are the connections be- Connect the cables properly. Go to step 9.
tween the PSU, FCU, and
the rx motor loose?
9. Does the rx motor work? Go to step 11. Go to step 10.
10. Does the FCU output Replace the rx motor. Replace the FCU.
power and phase drive
signals to the rx motor?
11. Does the cutter sensor Go to step 12. Correct the fault, then go to
mechanism work prop- step 12.
erly?
12. Do a paper cycle. Does the cutter work properly? If not, go to step 13.
13. Are the connections be- Connect the cables properly. Replace the FCU and/or
tween the FCU and the cutter motor and/or cutter
cutter loose? sensor.

Symptom: Abnormal noise

Check Action if Yes Action if No
1. Is the cover closed? Go to step 2. Close the cover.
2. Are the printer mecha- Replace the rx motor or the Assemble the machine
nisms assembled cor- FCU. properly.
rectly?

6-6
TROUBLESHOOTING November 30th, 1991
ERROR CODES

6.3. ERROR CODES

If an error code occurs, retry the communication. If the same problem oc-
curs, try to fix the problem as suggested below. Note that error codes 4-00,
01, 02, and 10 only appear in the error code display and on the service re-
port.

Code Meaning Suggested Cause/Action

0-00 DIS/NSF not detected Check the line connection.
within 40 s of Start being Check the NCU - FCU connectors.
pressed The machine at other end may be incompatible.
Replace the FCU or NCU.
Check for DIS/NSF with an oscilloscope.
If the rx signal is weak, there may be a bad line.
0-01 DCN received The other party is out of paper or has a jammed
unexpectedly printer.
The other party pressed Stop during communication.
0-03 Incompatible modem at The other terminal is incompatible.
other end
0-04 CFR or FTT not received Check the line connection.
after modem training Check the NCU - FCU connectors.
Try changing the tx level (use NCU parameter 01 or a
dedicated tx parameter for that address).
Replace the FCU or NCU.
The other terminal may be faulty; try sending to
another machine.
If the rx signal is weak or defective, there may be a
bad line.
0-05 Unsuccessful after Check the line connection.
modem training at 2400 Check the NCU - FCU connectors.
bps Try adjusting the tx level (use NCU parameter 01, or a
dedicated tx parameter for that address).
Replace the FCU or NCU.
Check for line problems.
0-06 The other terminal did Check the line connection.
not reply to DCS Check the FCU - NCU connectors.
Try adjusting the tx level (use NCU parameter 01, or a
dedicated tx parameter for that address).
Replace the NCU or FCU.
The other end may be defective or incompatible; try
sending to another machine.
Check for line problems.

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November 30th, 1991 TROUBLESHOOTING
ERROR CODES

Code Meaning Suggested Cause/Action

0-07 No post-message Check the line connection.
response from the other Check the FCU - NCU connectors.
end after a page was sent Replace the NCU or FCU.
The other end may have jammed or run out of paper.
The other end user may have disconnected the call.
Check for a bad line.
The other end may be defective; try sending to
another machine.
0-08 The other end sent RTN Check the line connection.
or PIN after receiving a Check the FCU - NCU connectors.
page, because there Replace the NCU or FCU.
were too many errors The other end may have jammed, or run out of paper
or memory space.
Try adjusting the tx level (use NCU parameter 01, or a
dedicated tx parameter for that address).
The other end may have a defective
modem/NCU/FCU; try sending to another machine.
Check for line problems and noise.
0-14 Non-standard post Check the FCU - NCU connectors.
message response code Incompatible or defective remote terminal; try sending
received to another machine.
Noisy line: resend.
Try adjusting the tx level (use NCU parameter 01or a
dedicated tx parameter for that address).
Replace the NCU or FCU.
0-15 The other end does not Incompatible remote terminal.
have the confidential or Remote terminal memory full.
transfer function
0-16 CFR or FTT not detected Check the line connection.
after modem training in Check the FCU - NCU connectors.
confidential or transfer Replace the NCU or FCU.
mode Try adjusting the tx level (use NCU parameter 01, or a
dedicated tx parameter for that address).
The other end may have disconnected, or it may be
defective; try calling another machine.
If the rx signal level is too low, there may be a line
problem.
0-20 Facsimile data not Check the line connection.
received within Check the FCU - NCU connectors.
6 s of retraining Replace the NCU or FCU.
Check for line problems.
Try calling another fax machine.
Change the reconstruction time from 6 s to 10 s (bit
switch 03, bit 7).
Switch the rx cable equalizer on (bit switch 0A, bit 6).
0-21 EOL signal (end-of-line) Check the connections between the FCU, NCU, & line.
from the other end not Check for line noise or other line problems
received within 5 s of the Replace the NCU or FCU.
previous EOL signal The remote machine may be defective or may have
disconnected.

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TROUBLESHOOTING November 30th, 1991
ERROR CODES

Code Meaning Suggested Cause/Action

0-22 The signal from the other Check the line connection.
end was interrupted for Check the FCU - NCU connectors.
more than 0.2 s Replace the NCU or FCU.
Defective remote terminal.
Check for line noise or other line problems.
0-23 Too many errors during Check the line connection.
reception Check the FCU - NCU connectors.
Replace the NCU or FCU.
Defective remote terminal.
Check for line noise or other line problems.
Ask the other end to adjust their tx level.
1-00 Document jam Improperly inserted document or unsuitable
document type.
Clean the document jam sensor.
See "Mechanical Operation - Document Jam".
1-01 Document length Divide the document into smaller pieces.
exceeded the maximum Clean the sensors in the ADF/scanner.
See "Mechanical Operation - Document Jam".
1-10 Document in the Clear debris from the sensor actuators.
scanning position at Clean the sensors in the ADF/scanner.
power-up Check the connections between the sensors and the
1-17 Document jam in the FCU.
feed-out area Replace defective sensor, operation panel board, or
FCU.
1-20 Printer jam - paper did Clear any debris from the sensors and the paper path.
not reach the exit Clean the sensors in the printer.
1-21 Printer jam - paper stuck Check that the copy tray is not overloaded.
at the exit Check the paper feed mechanism and paper path for
faults.
Check the connections from the FCU to the rx motor
and printer sensors.
Replace the rx motor, printer jam sensor, or FCU.
1-23 Cutter jam Clear any debris from the sensors and the paper path.
1-24 Cutter failed to initialize Clean the cutter sensor.
Check the cutter mechanism.
Check the connections from the FCU to the cutter
motor and cutter sensors.
Replace the cutter motor, cutter sensor, or FCU.
1-30 Paper ran out during Add paper.
printing If paper is present, clean the paper end sensor and
1-33 Paper end was detected check the sensor circuit for defects. Replace the FCU
when the machine was or the paper end sensor.
switched on
1-34 Paper end was detected
at the end of printing
6

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November 30th, 1991 TROUBLESHOOTING
ERROR CODES

Code Meaning Suggested Cause/Action

1-71 The printer cover was Check whether the user opened the cover during
opened during printing printing.
Check the cover lock mechanism.
Check the cover switch position and actuation.
Check connections between the cover switch and the
FCU.
Replace the cover switch or the FCU.
2-00 An RST7.5 interrupt Replace the FCU.
occurred while the
modem was in use
2-10 The modem cannot enter
tx mode
2-12 Modem clock irregularity
2-20 Abnormal Check the connections from the FCU to the MBU.
coding/decoding (cpu Replace the FCU or MBU.
not ready)
2-31 Line connection failure Check the connections from the FCU to the NCU/line.
(dc loop cannot be Try the communication again.
closed) Replace the FCU or NCU.
2-32 Line connection failure Check the connections from the FCU to the NCU and
(dc loop cannot be line.
opened) Replace the NCU or FCU.
2-40 Thermal head driver Check the connections between the FCU, thermal
irregularity head, and PSU.
Replace the FCU, thermal head, or PSU.
4-00 One page took longer Check for a bad line.
than 8 minutes to transmit Try the communication at a lower resolution, or
without halftone.
Change the FCU.
4-01 Line current was cut Check the line connector.
Check the connection between the FCU and the NCU.
Check for line problems.
Replace the FCU or the NCU.
4-02 The other end cut the Ask the other end to change their maximum receive
received page as it was length setting, then resend.
longer than the maximum
limit.
4-10 Communication failed Get the ID Codes the same and/or the CSIs
because of ID Code programmed correctly, then resend.
mismatch (Closed The machine at the other end may be defective.
Network) or Tel. No./CSI
mismatch (Protection
against Wrong
Connections)

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TROUBLESHOOTING November 30th, 1991
ERROR CODES

Code Meaning Suggested Cause/Action

5-20 Storage impossible Temporary memory shortage; otherwise, replace the
because of a lack of FCU or memory PCB.
memory
5-21 Memory overflow
5-22 The memory filled up
while the second or later
page of a document was
being scanned
5-23 The image quality of a Contact the sender and ask them to resend the
confidential or substitute message if necessary.
reception file was no
good
5-24 Same as code 5-22
6-05 Facsimile data frame not Check the line connection.
received within 18 s of Check the connections from the FCU to the NCU.
CFR, but there was no Check for a bad line or defective remote terminal.
line fail (G3 ECM) Replace the FCU or NCU.
Switch the rx cable equalizer on (bit switch 0A, bit 6).
6-06 Coding/decoding error Defective FCU.
(G3 ECM) Defective remote terminal.
6-08 PIP/PIN was received in The other end pressed Stop during communication.
reply to PPS.NULL (G3 The other terminal may be defective.
ECM)
6-09 ERR received (G3 ECM) Check for a noisy line.
Adjust the tx levels of the communicating machines.
See code 6-05.
6-10 Error frames still received Check for line noise.
at the other end after all Adjust the tx level (use NCU parameter 01, or the
communication attempts dedicated tx parameter for that address).
at 2400 bps (G3 ECM) Check the line connection.
Defective remote terminal.
6-11 Printer failed while Return the printer to normal operation. Then contact
receiving the second or the other end and ask them to resend the data.
later block of MMR Check the copy feed-out sensor and the copy paper
coded ECM data (the feed path.
reference line has already Replace the FCU.
been erased from
memory, so the data
coming in after the
printer error is not stored
by substitute reception)
6-99 V.21 signal not received Try again. The other end may be defective or the line
at the expected time may be bad. Otherwise, replace the NCU or FCU.
9-60 The machine sent Repair the mechanical problem, then ask the other
PIN/DCN because of a end to resend the message.
mechanical error during
reception, even though
Change the FCU.
6
there was memory space
available.

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November 30th, 1991 TROUBLESHOOTING
ERROR CODES

Code Meaning Suggested Cause/Action

9-61 The machine sent Check the paper feed path and printer for errors (if
PIN/DCN because the substitute reception has occurred).
memory filled up, even Make room in the memory, then ask the other end to
though the mechanism resend the message.
was not defective Change the FCU.

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TROUBLESHOOTING November 30th, 1991
ELECTRICAL COMPONENT DEFECTS

6.4. ELECTRICAL COMPONENT DEFECTS

6.4.1. Defective Sensor Table

Sensor Symptoms if Defective

Document sensor "TRANSMIT DIAL" is displayed at power-
up.
"READY SET DOCUMENT" is still
displayed after a document is placed in the
feeder.
Scan line sensor "CLEAR ORIGINAL" is displayed at power-
up.
"CLEAR ORIGINAL" is displayed soon after
the start of copying.
Trailing edge sensor Copying a multipage original takes a slightly
longer than usual.
Paper end sensor The Replace Paper indicator lights even if
paper is remaining.
The Replace Paper indicator does not light
when the paper has run out.
Printer jam sensor No paper cycle at power-up, and "CLEAR
COPY" is displayed soon after the start of
copying.
"CLEAR COPY" is displayed at power-up.
Sensor initialization problems occur at
power-up.
Cutter sensor Cutter operation errors occur.
Copy jam is detected during cutting.
Cover sensor There is no alarm on opening the cover.
"CLOSE COVER" is displayed at power-up.

There are no service-replaceable fuses, so there is no blown fuse table.

6-13