7600i
Service Manual
Xerox
Contents
1. INTRODUCTION ..............................................................................................1-1
GENERAL NOTES FOR SERVICING ................................................................................ 1-1
2. SPECIFICATION ..............................................................................................2-1
3. PRECAUTION AND TRANSPORTATION ............................................................3-1
3.1 PRECAUTIONS ............................................................................................ 3-1
3.2 TRANSPORTATION ........................................................................................ 3-1
4. THEORY OF OPERATION .................................................................................4-1
4.1 INTRODUCTION ........................................................................................... 4-1
4.2 MAIN CONTROL UNIT .................................................................................... 4-2
4.2.1 System diagram .................................................................................................... 4-2
4.2.2 Main control ........................................................................................................... 4-3
4.2.3 Sensor input and output ..................................................................................... 4-4
4.2.4 Power supply circuit ............................................................................................. 4-5
4.2.5 Power supply ......................................................................................................... 4-6
5. PROBLEM SOLVING .........................................................................................5-1
5.1 ERROR CODE TABLE ...................................................................................... 5-1
6. DISASSEMBLY.................................................................................................6-1
PROCEDURE FOR DISASSEMBLY AND REASSEMBLY ............................................................ 6-1
Notes on disassembly ........................................................................................................ 6-1
6.1 REMOVING THE DOCUMENT COVER .................................................................... 6-2
6.2 REMOVING THE CONTROL PANEL ...................................................................... 6-2
6.3 REMOVING THE UPPER HOUSING ...................................................................... 6-4
6.4 REMOVING THE UI BOARD.............................................................................. 6-5
6.5 REMOVING THE PULLEY ASSEMBLY .................................................................... 6-6
6.6 REMOVING THE CIS ASSEMBLY ........................................................................ 6-7
6.7 REMOVING THE MOTOR WITH A BELT ................................................................. 6-8
6.8 REMOVING THE MAIN BOARD .......................................................................... 6-9
7. SERVICE PARTS TABLE ...................................................................................5-1
7.1 SERVICE PARTS TABLE ................................................................................... 5-1
ii
Product Service Manual
1. INTRODUCTION
General Notes for Servicing
This manual is intended to be used by the maintenance engineers. It describes areas to be
maintained, the detailed installation, the disassembly, and the component replacement
procedures as well as the main trouble shooting guides.
Please take your time to read this manual thoroughly to obtain comprehensive knowledge
about product before serving the unit.
General notes for servicing
(1) Before trying to disassemble the product, make sure the power supply cord of the
product is disconnected from the power outlet. Under any circumstance, do not
remove or install the connectors on the product with the power supply turned ON.
(2) Use caution not to drop small parts or screws inside the unit when disassembling and
reassembling. If left inside, they might cause the malfunction of the unit.
(3) Do not pull the connector cable when disconnecting it. Hold the connector.
(4) When carrying the scanning head unit, put it in an anti-static bag.
(5) Keep the document table glass surface always clean. If contaminated, use a dry
clean cloth for cleaning.
(6) Use caution not to injure your fingers or hands when disassembling or reassembling
the unit.
1-1
Product Service Manual
2. SPECIFICATION
Basic Specifications
Model Name： 7600i
Technology: Contact Image Sensor (CIS)
Light Source： LED (Light-Emitting-Diode lamp)
Optical Resolution： 1200 dpi
Scanning Mode： Black & White
Gray
Color
Interface： USB 2.0
Power Consumption： <2.5W
Humidity： 10~85% RH
Operating Temperature： 10ºC ~ 35ºC
Dimension： 260(W) x 410(D) x 40(H) mm
Weight： 1.5 Kgs (3.3 lbs)
2-1
Product Service Manual
3. PRECAUTION AND TRANSPORTATION
Precautions
Transportation
3.1 Precautions
Pay attention to the following matters before unpacking and installation.
Do not install in a place where vibration may occur.
Keep the product out of direct sunlight. Do not install near a heat source.
Do not place the product around materials which shut off the circulation of air.
Do not install in a humid or dusty place.
Use care not to scratch the glass surface of the product or the document holding
pad with a clip or staple.
Do not use the wall socket with connecting devices which may generate noise, for
example, air-conditioner, etc.
Use a suitable AC power source.
Place the product on a level surface.
3.2 Transportation
To move the product from where it is installed, for repair or any other reason, make
sure to observe the following conditions:
(1) Power off the product.
(2) Remove the power cable.
(3) Put the product in the packing case with the packing material.
3-1
Product Service Manual
4. THEORY OF OPERATION
Introduction
Main Control Unit
4.1 Introduction
Cold Cathode
Fluorescent Lamp
Host
Analogue
Paper Signal
Digital
Lens Main Signal
Reflected CIS CCD Main Host
Board 1 0 0
Rays Board 1 0
USB 2.0
Controller
Figure 4.1 Theory of formation of image.
The reflected rays of your original as shown in the above Figure 4.1 pass through the lens
and create an image on the CIS. Then, according to the different light intensity perceived
by the CIS, the CIS will transfer these data into a series of analog signals to the main
board, where the signals are turned into digital signals. These digital signals flow to the
USB 2.0 Controller to transfer to a host computer.
4-1
4.2 Main control unit
4.2.1 System diagram
Power: BUS power 5V/500mA
Figure 4.2 Product System Block Diagra
4-2
Product Service Manual
4.2.2 Main control
Use logic circuit to control the CIS for image catch. Image process of the AFE and
ASIC(Jupiter).
Figure 4.3 Main Control Block Diagram
4-3
4.2.3 Sensor input and output
A. Home Sensor
The CIS holder position is detected by Home Sensor. The photo diode transmits
signals to the photo transistor and the circuit is shown below.
vcc vcc
Out
Figure 4.4 Paper in/out sensor
The home sensor is detected when the CIS holder cover sensor that makes photo diode
will not transmits signals to the photo transistor.
4-4
Product Service Manual
4.2.4 Power supply circuit
This power system use boost and buck regulator transits voltage to supply system
need.
Figure 4.5 Power System
4-5
4.2.5 Power supply
In this system, there is only one type of power supply. Please see Table 4.1 for
details.
Table 4.1 Power Adapter
Type
Wall-mount
Characteristic
Input voltage range 100-240V
Input current (at the 1.25A type or less
rated input/output)
Input frequency 50-60Hz
Max. in-rush 45A
current(@full load,
cold start)
Output voltage +12Vdc
Min. load current 0.0A
Max. load current 1.25A
Total power (at full 15W
load)
4-6
Product Service Manual
5. PROBLEM SOLVING
Error code table
5.1 Error code table
The scanner has internal error code table to help you determine the cause of
operational problems.
Error code Tables
The tables in this section provide detailed troubleshooting information.
AV_CALIBRATION_ERROR, // Err7=Calibration failed.
AV_SCAN_ERROR, // Err8=Scanner internel error.
AV_SCANNER_NOT_CONNECTED , // Err129=Can't find scanner.
AV_REGISTER_RW_ERROR, // Err174=Scanner Initial Failed.
AV_SEARCH_START_ERROR, // Err177=find leading edge&side
edge faill
AV_PARAMETER_CHECK_ERROR, // Err151=Parameter Check Error.
AV_ALLOCATE_MEMORY_FAILED, // Err152=Allocate Memory Failed.
AV_SYSTEM_ERROR = 250, // Err250=System Error.
AV_READ_ERROR, // Err157=Read Image Error.
AV_END_ERROR, // Err158=End Image Error.
AV_SCANNER_BUSY, // Err162=Scanner Busy
5-1
Product Service Manual
6. DISASSEMBLY
Procedure for Disassembly and Reassembly
Procedure for disassembly and reassembly
Notes on disassembly
(1) Clean the disassembly and assembly location.
(2) Disconnect the power cable and remove the AC plug from the outlet before
disassembly and assembly.
(3) Follow the disassembly and assembly procedures. Never loosen the screws of
parts that must not be disassembled.
(4) Store the disassembled parts in a clean place to avoid loss.
(5) After replacement, check the contacts and spare part mounting.
(6) Assemble the parts in reverse order of disassembly procedure.
6-1
6.1 Removing the Document Cover
Lift and remove the document cover from the product, as shown:
Document Cover
6.2 Removing the Control Panel
1. Remove the 4 rubber pads on the scanner bottom as indicated.
6-2
Product Service Manual
2. Loosen the 2 fixing screws that fix the control panel as indicated.
3. Pry the control panel open with a flat screwdriver, as shown:
Control Panel
6-3
6.3 Removing the Upper Housing
1. Pry the button cover open with a flat screwdriver, as shown:
2. Pry the upper housing open with a flat screwdriver, as shown:
Upper Housing
6-4
Product Service Manual
6.4 Removing the UI Board
Unplug the flat cable to remove the UI board as shown:
UI Board
6-5
6.5 Removing the Pulley Assembly
Remove the 1 fixing screw to remove the pulley assembly as shown:
Pulley Assembly
6-6
Product Service Manual
6.6 Removing the CIS Assembly
1. Remove the bolt from the CIS assembly as shown:
2. Remove the flat cable to remove the CIS assembly.
CIS Assembly
6-7
6.7 Removing the Motor with a Belt
Remove 2 fixing screws on the bottom housing to remove the motor together with a belt.
Motor with a Belt
6-8
Product Service Manual
6.8 Removing the Main Board
1. Disconnect the 2 flat cables on the main board as indicated.
2. Remove 3 fixing screws to remove the main board as indicated.
6-9
Main Board
6-10
Product Service Manual
7. SERVICE PARTS TABLE
SERVICE PARTS TABLE
7.1 SERVICE PARTS TABLE
SERVICE PARTS TABLE
Visioneer ITEM Vendor
DESCRIPTION
P/N # P/N
003-
65-2125-000 1 7383-0- S-PARTS:ASS'Y,DOCUMENT COVER,W/NAMEPLATE,7600i,RoHS
SP
051- S-PARTS:HINGE-L,7600i,RoHS
65-2126-000 1-1 0906A-
0-SP
051- S-PARTS:HINGE-R,7600i,RoHS
65-2127-000 1-2 0936A-
0-SP
051- S-PARTS:CASE,BACKGROUND,298.5x215.5x7,7600i,RoHS
65-2128-000 1-3 5804A-
0-SP
084- S-PARTS:NAMEPLATE,BADGE,Xerox scanner,RoHS
65-2129-000 1-4 1366-0-
SP
002-
65-2130-000 2 6088-0- S-PARTS:ASS'Y,UPPER HOUSING,7600i,RoHS
SP
004-
65-2131-000 3 1543A- S-PARTS:PCBA:UIA80,HoRS
9-SP
051- S-PARTS:BUTTON,FUNCTION,7600i,RoHS
65-2132-000 4 6292-0-
SP
051-
65-2133-000 5 6305-0- S-PARTS:COVER,FRONT,PANEL,7600i,RoHS
SP
051-
65-2134-000 6 4074A- S-PARTS:SPACER,RIGHT,7600i,RoHS
0-SP
008- S-PARTS:ASS'Y,CIS,7600i,RoHS
65-2135-000 7 1508A-
09-SP
104-
65-2136-000 8 5129A- S-PARTS:CIS,FFC CABLE,12P,P=1.0mm,L=416mm,7600i,RoHS
29-SP
056-
65-2137-000 9 1372A- S-PARTS:SPRING,COMPRESSION,CONICAL,7600i,RoHS
0-SP
7-11
003-
65-2138-000 10 7385-0- S-PARTS:ASS'Y,CIS HOLDER,7600i,RoHS
SP
002-
65-2139-000 11 5496A- S-PARTS:ASS'Y,GEAR,7600i,RoHS
0-SP
111-
65-2140-000 12 0072A- S-PARTS:EMI CORE,7600i,RoHS
09-SP
004- S-PARTS:PCBA,MBA600,7600i,RoHS
65-2141-000 13 2215-9-
SP
003- S-PARTS:ASS'Y,HOUSING BOTTOM,W/RUBBER
65-2142-000 14 7384-0- STAND,7600i,RoHS
SP
002-
65-2143-000 15 5497A- S-PARTS:ASS'Y,PULLEY,7600i,RoHS
0-SP
104-
35-0239- S-PARTS:USB CABLE,USB A(M)/B(M)
A 6075A-
000 TYPE,4P,L=1200mm,7600i,RoHS
09-SP
88-0456- 072-
B S-PARTS:FOAM,EPS,L:296x90x80,RoHS
000 0754-0
88-0455- 072-
C S-PARTS:FOAM,EPS,R:296x90x132,RoHS
000 0755-0
88-0637- 073-
D S-PARTS:CARTON,500x94x308mm,A/F,7600i,RoHS
000 1975-0
003-
70-0573-
E 2731-0- S-PARTS:S/W PACKAGE,7600i,WORLD WIDE,RoHS
010
SP
7-12
Product Service Manual
7-13
7-14
