STEREO RECEIVER

RX-797 SERVICE MANUAL

IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA
Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service
departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and
specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the
distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

■ CONTENTS
TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2 IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17–18
IMPEDANCE SELECTOR . . . . . . . . . . . . . . . . . . . . . . 3 DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 20–28
REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5 PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 29
REMOTE CONTROL PANELS . . . . . . . . . . . . . . . . . . 5 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 6–7 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 31–34
INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35–43
DPX-1200
RX-797

DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . 8 REMOTE CONTROL RAX100/RAX101 . . . . . . . . . . 44

SELF DIAGNOSIS FUNCTION . . . . . . . . . . . . . . . 9–15 REMOTE CONTROL RAX17 . . . . . . . . . . . . . . . . . . 45
AMP ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 16 REMOTE CONTROL RAX18 . . . . . . . . . . . . . . . . . . 46

© 2005 YAMAHA CORPORATION. All rights reseved.

100979 This manual is copyrighted by YAMAHA and may not be copied or
redistributed either in print or electronically without permission.

’05.10
 RX-797

■ TO SERVICE PERSONNEL
AC LEAKAGE
1. Critical Components Information WALL EQUIPMENT TESTER OR
Components having special characteristics are marked Z OUTLET UNDER TEST EQUIVALENT
and must be replaced with parts having specifications equal
to those originally installed.

2. Leakage Current Measurement (For 120V Models Only)

When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated INSULATING
from supply circuits. TABLE

● Meter impedance should be equivalent to 1500 ohms shunted ● Leakage current must not exceed 0.5mA.
by 0.15µF.
● Be sure to test for leakage with the AC plug in both
polarities.
“CAUTION”
“F251, F252 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A, 125V FUSE.”
A V
CAUTION
F251, F252 : REPLACE WITH SAME TYPE 8A, 125V FUSE.
ATTENTION
F251, F252 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 8A, 125V.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or
plastic (where applicable) components may also contain traces of chemicals found by the California Health and
Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR

ANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes
or expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands
before handling food.

About Lead Free Solder

The P.C.B.s installed in this unit are soldered using the following solder.

Among some types of lead free solder currently available, it

Side A SMT REFLOW Process
is recommended to use one of the following types for the
repair work.
• Sn + Ag + Cu (tin + silver + copper)
Solder Dip • Sn + Cu (tin + copper)
RX-797

Side B • Sn + Zn + Bi (tin + zinc + bismuth)

MI FLOW Process

Caution:
1. As the melting point temperature of the lead free solder is about 30°C to 40°C (50°F to 70°F) higher than that of the lead
solder, be sure to use a soldering iron suitable to each solder.
2. If lead solder must be used, be sure to remove lead free solder from each terminal section of the parts to be replaced and from
the area around it completely before soldering, or make sure that the lead free solder and lead solder melt together fully.

2
 RX-797

■ IMPEDANCE SELECTOR

WARNING:
Do not change the setting of the IMPEDANCE SELECTOR switch
when the unit power is switched on, as doing so may damage
the unit.

IMPEDANCE SELECTOR

■ FRONT PANELS
▼ U, C models

▼ R, A, G, E, L models

DPX-1200
RX-797

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 RX-797

■ REAR PANELS
▼ U, C models

▼ R model

▼ A model
RX-797

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 RX-797

▼ G, E models

▼ L model

■ REMOTE CONTROL PANELS

▼ RAX100 ▼ RAX101 ▼ RAX17 ▼ RAX18
(U, C models) (R, A, G, E, L models) (U, C models) (R, A, G, E, L models)

DPX-1200
RX-797

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 RX-797

■ SPECIFICATIONS
AUDIO SECTION VIDEO SECTION
Minimum RMS Output Power (Power Amp. Section) Video Signal Type
L/R, 20 Hz to 20 kHz, 0.019% THD, 8 ohms . . . . 100 W + 100 W U, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTSC
L/R, 20 Hz to 20 kHz, 0.03% THD, 6 ohms . . . . . 120 W + 120 W A, G, E, L models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAL
Dynamic Power Per Channel (IHF) Video Signal Level . . . . . . . . . . . . . . . . . . . . . 1 Vp-p/75 ohms
8/6/4/2 ohms . . . . . . . . . . . . . . . . . . . . . . . 140/170/220/290 W Video Maximum Input Level . . . . . . . . . . . . . . 1.5 Vp-p or more
Maximum Power Per Channel (G, E models) Video Signal to Noise Ratio . . . . . . . . . . . . . . . . 50 dB or more
1 kHz, 0.7 % THD, 4 ohms . . . . . . . . . . . . . . . . . . . . . . . . 160 W Monitor Out Frequency Response . . . . 5 Hz to 10 MHz, -3 dB
IEC Power (G, E models)
1 kHz, 0.019% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . 115 W
Maximum Power (EIAJ) (R, L models) FM SECTION
1 kHz, 10% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . . . . 145 W Tuning Range
1 kHz, 10% THD, 6 ohms . . . . . . . . . . . . . . . . . . . . . . . . . 170 W U, C models . . . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 107.9 MHz
Power Band Width R, L models . . . . . . . . . . . . 87.5 to 108.0/87.50 to 108.00 MHz
L/R, 0.03% THD, 50 W, 8 ohms . . . . . . . . . . . . 10 Hz to 50 kHz A, G, E models . . . . . . . . . . . . . . . . . . . . . 87.50 to 108.00 MHz
Damping Factor 50 dB Quieting Sensitivity (IHF)
20 Hz to 20 kHz, SPEAKER-A, 8 ohms . . . . . . . . . 240 or more 1 kHz 100% MOD.
Input Sensitivity/Input Impedance Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 µV (17.3 dBf)
PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . 3.0 mV/47 k-ohms Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 µV (39.2 dBf)
CD, etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/47 k-ohms Usable Sensitivity (IHF)
MAIN IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V/30 k-ohms Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 µV (11.2 dBf)
Maximum Input Signal Selectivity
PHONO MM, 1kHz, 0.019 % THD . . . . . . . . . . . . . . . . . . 70 mV at 400 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 dB
CD, etc., 1kHz, 0.019 % THD . . . . . . . . . . . . . . . . . . . . . . 2.2 V Signal to Noise Ratio (IHF)
Output Level/Output Impedance Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 dB
SUBWOOFER . . . . . . . . . . . . . . . . . . . . . . . . . . 4 V/1.2 k-ohms Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 dB
PRE OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V/1.2 k-ohms Harmonic Distortion (1 kHz)
ZONE2 OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 V/1.2 k-ohms Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2 %
REC OUT . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mV/1.2 k-ohms Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 %
Headphone Jack Rated Output/Output Impedance Stereo Separation (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . 45 dB
CD, etc. 1 kHz, 200 mV, 8 ohms, 0.015% THD . . . . . . . . . 0.47 V/470 ohms Frequency Response
Frequency Response 20 Hz to 15 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.5/-2.0 dB
CD, etc. 20 Hz to 20 kHz . . . . . . . . . . . . . . . . . . . . . . 0 ± 0.5 dB Antenna Input . . . . . . . . . . . . . . . . . . . . . . 75 ohms unbalanced
MAIN IN, 20 Hz to 20 kHz . . . . . . . . . . . . . . . . . . . . . 0 ± 0.5 dB
CD, CD DIRECT AMP ON, 10 Hz to 100 kHz . . . . . . . . . . . . . 0 ± 1.0 dB AM SECTION
RIAA Equalization Deviation Tuning Range
PHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 ± 0.5 dB U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . 530 to 1710 kHz
Total Harmonic Distortion (20 Hz to 20 kHz) R, L models . . . . . . . . . . . . . . . . . 530 to 1710/531 to 1611 kHz
PHONO MM to REC OUT (3 V) . . . . . . . . . . . . . . . . 0.008 % or less A, G, E models . . . . . . . . . . . . . . . . . . . . . . . . 531 to 1611 kHz
CD, etc. to PRE OUT (1V) . . . . . . . . . . . . . . . . 0.007 % or less Usable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300 µV/m
CD, etc. to SP OUT (50 W/8 ohms) . . . . . . . . . 0.012 % or less Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Loop antenna
Signal to Noise Ratio (IHF-A Network)
PHONO MM (Input shorted, 5 mV) . . . . . . . . . . 87 dB or more
CD, CD DIRECT AMP ON,(Input shorted, 200mV) . . . . . . 110 dB or more GENERAL
Residual Noise (IHF-A Network) Power Supply
CD DIRECT AMP ON . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 µV U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . AC 120 V, 60 Hz
PURE DIRECT ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 µV R model . . . . . . . . . . . . . AC 110/120/220/230-240 V, 50/60 Hz
Channel Separation A model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 240 V, 50 Hz
CD, etc. (Input 5.1 k-ohms shorted) G, E models . . . . . . . . . . . . . . . . . . . . . . . . . . AC 230 V, 50 Hz
1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 dB or more L model . . . . . . . . . . . . . . . . . . . . AC 220/230-240 V, 50/60 Hz
10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 dB or more Power Consumption
Tone Control Characteristics U, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 W, 360 VA
R, A, G, E, L models . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 W
RX-797

BASS Boost/Cut (50 Hz) . . . . . . . . . . . . . +10 dB/-10 dB

Turnover Frequency . . . . . . . . . . . . . . . . . 350 Hz Standby Power Consumption (reference) . . . . . . . . . . . . 0.1 W
TREBLE Boost/Cut (20 kHz) . . . . . . . . . . . . +10 dB/-10 dB Maximum Power Consumption (R model)
Turnover Frequency . . . . . . . . . . . . . . . . . 3.5 kHz 1 kHz, 6 ohms, 10% THD . . . . . . . . . . . . . . . . . . . . . . . 650 W
Continuous Loudness Control AC Outlet
Attenuation (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 dB 2 Switched Outlet
Gain Tracking Error R model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 W Max. total
0 to -60 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 dB or less U, C, G, E, L models . . . . . . . . . . . . . . . . . . 100 W Max. total
1 Switched Outlet
A models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W Max.

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 RX-797

DIMENSIONS

(7/8")
Dimensions (W x H x D) . . . . . . . . . . . . . . 435 x 151 x 389 mm

21.5
(17-1/8" x 5-15/16" x 15-5/16")
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.9 kg (24 lbs)
Finish . . . . . . . . . . . . . . . . Black color (U, C, R, A, G, E, L moels)
Titanium color (G, E, L moels)
Accessories . . . . . . . . . . . . . . . . . . . . . . . . Remote Control x 1
Zone2 Remote Control x 1

389 (15-1/16")
349 (13-3/4")
Battery (AA, R6, UM-3) x 2
Battery (AAA, R03, UM-4) x 2
Power Cable x 1
Indoor FM Antenna x 1
AM Loop Antenna x 1
* Specifications subject to change without notice.

U ........ USA model G ........ European model

C ........ Canadian model E ........ South European model
R ........ General model L ........ Singapore model

18.5
(3/4")
A ........ Australian model

130 (5-1/8")

151 (5-15/16")
© 2005 XM Satellite Radio Inc. All rights reserved. All other
trademarks are the property of their respective owners.

435 (17-1/8")

21
(13/16")
Unit : mm (inch)
■ INTERNAL VIEW
q w er t y u i o !0 !1 q MAIN (2) P.C.B.
w MAIN (3) P.C.B.
e MAIN (8) P.C.B.
r MAIN (4) P.C.B.
t MAIN (5) P.C.B. (R, L models)
y MAIN (1) P.C.B.
u XM P.C.B. (U, C models)
i FUNCTION (4) P.C.B.
!2 o FUNCTION (5) P.C.B.
!3 !0 FUNCTION (3) P.C.B.
!1 OPERATION (13) P.C.B.
!2 FUNCTION (2) P.C.B.
!3 FUNCTION (1) P.C.B.
!4 OPERATION (6) P.C.B.
!5 OPERATION (10) P.C.B.
!6 MAIN (7) P.C.B.
!4 !5 !6 !7 !8 !9 !7 OPERATION (3) P.C.B.
!8 MAIN (6) P.C.B.
!4 @0 @1 !9 @2 @3 !9 OPERATION (2) P.C.B.
DPX-1200
RX-797

@0 OPERATION (7) P.C.B.

@1 OPERATION (1) P.C.B.
@2 OPERATION (8) P.C.B.
@3 OPERATION (9) P.C.B.
@4 OPERATION (5) P.C.B.
@5 OPERATION (11) P.C.B.
@4 !5 @5 !7 @6 @6 OPERATION (4) P.C.B.

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 RX-797

■ DISASSEMBLY PROCEDURES

• Remove parts in disassembly order as numbered.

• Disconnect the power cable from the AC outlet.

1. Removal of Top Cover 3. Removal of Plate Side

a. Remove 4 screws ( q ), 1 screw ( w ) and 4 screws ( Remove 2 push rivets ( y ) and then remove the Plate
e ). (Fig. 1) Side L/R. (Fig. 1)
b. Slide the Top Cover rearward to remove it. (Fig. 1)
4. Removal of Sub Chassis Unit
2. Removal of Front Panel Unit a. Remove 2 screws ( u ) and then slide the Sub Chassis
a. Remove 6 knobs (INPUT, REC OUT, BASS, TREBLE, Unit forward. (Fig. 1)
BALANCE, LOUNESS). b. Loosen the harness fixture fixing the cable.
b. Remove 1 screw ( r ) and then remove the Support c. Remove connectors CB283, CB401, CB404, CB407,
Top. (Fig. 1) CB503 and CB606 and then remove the Sub Chassis
c. Remove 7 screws ( t ) and then remove the Front Unit. (Fig. 1)
Panel Unit. (Fig. 1)

1
Top Cover
3

Sub Chassis Unit

Front Panel Unit CB401

CB404
5 7
CB407 1
CB283 CB503
4
Support Top

Knob 6
7
Plate Side L
Knob
Knob CB606

Plate Side R 6
Fig. 1
RX-797

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 RX-797

■ SELF DIAGNOSIS FUNCTION

This product has a built-in self diagnosis function (DIAG) to facilitate inspection, measurement and determination of a faulty
item, if any. There are 8 DIAG menu items, each having sub-menu items.

No. DIAG menu Sub-menu

1 DISPLAY CHECK 1. VFD CHECK (Initial display
2. VFD DISP OFF (All segments OFF)
3. VFD DISP ALL (All segments ON 100%)
4. VFD DIMMER (All segments ON 50%)
5. CHECKED PATTERN (ON in lattice)
2 FACTORY PRESET 1. PRESET INHI (memory initialization inhibited
2. PRESET RSRV (memory initialized
3 AD DATA CHECK 1. DC/PS (protection)
2. THM L, R
3. REC-OUT
4. K0 / K1 (panel key)
4 XM STATUS 1. XMS1
2. XMS2
5 PROTECTION SETTING 1. PS_Lo :
2. PS_Hi :
3. DC_Lo :
4. DC_Hi :
5. TEMP :
6 PROTECTION HISTORY 1. history 1
2. history 2
3. history 3
4. history 4
7 SOFT SWITCH 1. SW MODE : PCB (/MODEL/FNC)
2. MODEL SETTING : RX797 (/RX497/RX397)
3. DESTINATION : UC (/RL/A/BG)
4. TUNER DESTINATION : (/RL/ABG)
5. TUNER TYPE : NRM (/RDS/XM)
6. ZONE2 : EXIST (/NOT)
8 MICROPROCESSOR INFORMATION 1. VERSION
2. CHECK SUM
3. OPE / XM
4. PORT
5. EE SUM

DPX-1200
RX-797

9
 RX-797

● Starting DIAG ● Display provided when DIAG started

Press the “MASTER” key of the main unit while simulta- On the FL display of the main unit, an opening mes-
neously pressing the “FM/AM” key and the “8” key to acti- sage (including the version and the protection history)
vate the DIAG function. appears for a few seconds followed by the diagnostic
menu display (1. VFD CHECK).

When there is no history of protection function:

Opening message

When there is no protection history.

Turn on the power while pressing these keys. NO PROTECT Z

Version (1 alphabet)
● Starting DIAG in the protection cancel
mode
After a few seconds.
If the protection function works and causing hindrance to
trouble diagnosis, cancel the protection function as de-
scribed below and it will be possible to enter the DIAG mode. DIAG menu display
(The protection functions other than the excess current
1. VFD CHECK
detect function will be disabled.)
Press the “MASTER” key while simultaneously pressing
those two keys indicated in the figure above. At this time,
keep pressing those two keys for 3 seconds or longer. When there is a history of protection function:
In this mode, the “SLEEP” segment of the FL display of the The FL display appears as shown below depending on the
main unit flashes to indicate that the mode is DIAG mode type of the protection function.
with the protection functions disabled.
The protection function worked due to excessive current
CAUTION! through the amplifier. The protection function activates im-
Using this product with the protection function disabled mediately to turn off the power, with no history display at
may cause damage to itself. Use special care for this point turn-on, if the amplifier is defective.
when using this mode.

I PROTECT Z
● Canceling DIAG
1 Before canceling DIAG, execute setting for PRESET of The protection function worked due to a defect or overload
DIAG menu No.2 (Memory initialization inhibited or in the power supply. The abnormal voltage is displayed in
Memory initialized). % based on 5V as 100%. If the power is turned on with the
* In order to keep the user memory stored, be sure to se- abnormality unsolved, the protection function works in about
lect PRESET INHIBITED (Memory initialization inhibited). 1 second to turn off the power.
Protection history will remain in memory.
RX-797

2 Turn off the power by pressing the “MASTER” key of the

main unit. PS PRT :000 Z

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 RX-797

The protection function worked due to a DC voltage ap- ● Operation procedure of DIAG MENU and
pearing at the speaker terminal. SUB-MENU
A cause could be a defect in the amplifier. If the power is There are 8 MENU items, each of which has some SUB-
turned on with the abnormality unsolved, the protection func- MENU items.
tion works in about 3 seconds to turn off the power.
DIAG menu selection
Select the menu using PRESET NO keys.
DC PRT :000 Z

The protection function worked due to the temperature limit

being exceeded. Causes could be poor ventillation or a de-
fect related to the thermal sensor. The abnormal voltage is
displayed in % based on 5V as 500%. If the power is turned
on with the abnormality unsolved, the protection function SUB-MENU selection
works in about 1 second to turn off the power. Select the sub-menu using w (Forward) and q (Reverse)
keys of TUNING.
TMR PRT:000 Z

TML PRT:000 Z
Reverse Forward

For detection of each protection function (except I-PRO-

TECT) , refer to DIAG MENU No.3 AD DATA CHECK (p.13).
● Functions in DIAG mode
In addition to the DIAG menu items, functions as listed
● History of protection function
When the protection function has worked, its history is stored below are available.
in memory with a backup. Even if no abnormality is noted while • Input selection
servicing the unit, an abnormality which has occurred previ- • Muting
ously can be defined as long as the backup data has been • Power on/off
stored. • Master volume
The history of the protection function is cleared when DIAG is
cancelled by selecting PRESET RESERVED (Memory initial- * Functions related to the tuner is not available.
ized) of DIAG menu No.2 or when the backup data is erased.

● Initial settings used to start DIAG

The following initial settings are used when starting
● Display during menu operation DIAG. When DIAG is canceled, these settings are re-
During the DIAG operation, the function at work is indi- stored to those before starting DIAG.
cated on the FL indicator. The contents displayed dur- • Input: DVD
ing the function operation are described later in the “De- • Audio mute: OFF
tails of DIAG menu” section. • DIAG menu: DISPLAY CHECK (1. VFD CHECK)
DPX-1200
RX-797

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 RX-797

1. DISPLAY CHECK 2. FACTORY PRESET

This program is used to check the FL display section. The This menu is used to reserve/inhibit initialization of the back-
display condition varies as shown below according to the up RAM.
sub-menu operation.

Initial display
2.PRESET INHI
PRESET INHIBIT (Initialization inhibited)
RAM initialization is not executed. Select this sub-
menu to protect the values set by the user.
All segments OFF Note: The protection history will not be erased using
PRESET INHIBIT.

All segments ON 2.PRESET RSRV

(dimmer 100%)
PRESET RESERVED (Initialization reserved)
Initialization of the back-up RAM is reserved. (Actu-
ally, initialization is executed the next time that the
All segments ON power is turned on.) Select this sub-menu to reset
(dimmer 50%) to the original factory settings or to reset the RAM.
Use PRESET RESERVED to erase the protection
history.

Lighting of segments
in lattice

CAUTION: Before setting to the PRESET RESERVED, write down

the existing preset memory
content of the Tuner in a table as shown below. (This is be-
cause setting to the PRESET RESERVED will cause ALL user
memory contents to be erased.)

Lighting in lattice Preset group P1 P2 P3 P4

A
B
C
Short Normal D
E

Preset group P5 P6 P7 P8
A
B
C
D
E
Segment conditions of the FL driver and the FL tube are
RX-797

checked by turning ON and OFF all segments. Next, the

operation of the FL driver is checked by using the dimmer
control. Then a short between segments next to each other
is checked by turning ON and OFF all segments alternately
(in lattice). (In the above example, the segments in the sec-
ond row from the top are shorted.)

12
 RX-797

● PRESET STATIONS REC-OUT

STATION FM FACTORY PRESET DATA (MHz) 255% display of the voltage based on the rec-out selector
PAGE NO. U, C R, A, G, E, L detected value. Reference voltage: 5V
1 87.5 87.50 For the correct value, refer to the table below.
2 90.1 90.10
3 95.1 95.10
A/C/E 4 98.1 98.10 REC-OUT:160
5 107.9 108.00
6 88.1 88.10
7 106.1 106.10 % U, C R, A, G, E, L
8 107.9 108.00 1 22 – 46 DVD DVD
2 47 – 75 DTC/CBL DTV/CBL
STATION AM FACTORY PRESET DATA (kHz)
PAGE NO. U, C, R A, G, E, L 3 76 – 105 VCR VCR
1 630 630 4 106 – 135 MD/TAPE MD/TAPE
2 1080 1080 5 136 – 166 CD SOURCE
3 1440 1440 6 167 – 199 XM CD
B/D 4 530 531 7 200 – 236 TUNER TUNER
5 1710 1611 8 237 – 255 PHONO PHONO
6 900 900
7 1350 1350
8 1400 1404 K0/K1
This is the A/D value of the panel key input ports KEY0 and
KEY1 (microprocessor). The table below shows the A/D
value obtained when each key is pressed. When the value
3. AD DATA CHECK
is not within the standard value range, no correct operation
With this sub-menu used, the key scanning, A/D value of
is provided. Referring to the table below, check the value of
the voltage at the abnormality detect (protection) port, etc.
each voltage dividing resistor of each key, solder condition,
are displayed. The A/D conversion value is displayed in %.
etc.
The state before audio signal processing is kept.
When K0/K1 menu is selected, keys become nonoperable
K0:100 K1:099
due to detection of the values of all keys.
However, it is possible to advance to the next sub-menu by
% Key0 Key1
turning the INPUT of the main unit. When using this func-
1 0–4 FM/AM P8
tion, note that turning the INPUT more than 2 clicks will
2 4 – 12 TUNING DOWN P7
cause the volume value to change. 3 12 – 21 TUNING UP P6
* The numeric value in the diagram is for reference. 4 21 – 30 TUNING MODE P5
5 31 – 41 MEMORY P4
DC/PS (protection detection) 6 42 – 52 EDIT P3
DC: DC detect protection value 7 52 – 61 ZONE CTRL P2
Normal value: 19 to 51 (Reference: 5V = 100%) 8 61 – 68 SPEAKER B P1
PS: Power supply voltageprotection value 9 68 – 74 SPEAKER A A/B/C/D/E
10 75 – 81
Normal value: 54 to 84 (Reference: 5V = 100%)
11 81 – 89

When the value is outside of the normal range, the pro-

tection function works to turn off the power.
4. XM STATUS
XM Radio data is displayed.
DC:035 PS:067
DPX-1200
RX-797

4. XMS1xxxxxxx
THM (temperature detection)
When the value is outside of the normal range, the protec-
tion function works to turn off the power.
500% display of the voltage based on the temperature de- 4. XMS2xxxxxxx
tected value. Reference voltage: 5V

THM:L096 R098
13
 RX-797

5. PROTECTION SETTING 6. PROTECTION HISTORY

This menu is used to change the protection setting value. Four protection histories are displayed.
The change is effective in this menu only. A set value can The history is cleared by the initialization reservation of DIAG
be specified between 0 – 255 (0V – 5V). menu No. 2.

Operation: When there is no history of protection function:

Change the digit with the “EDIT” key. There is no history of protection function.
UP / DOWN with the TUNING MODE / MEMORY key.
6-1 NoPRT

PS_Lo: 0138 When there is a history of protection function:

There is a history of protection function due to excess cur-
The PS protection LO level threshold value can be set. rent.
Protection operates when the voltage value of the de-
tection terminal falls below this value. 6-1 I PRT

There is a history of protection function due to abnormal

PS_Hi: 0215 voltage in the power supply section.
The PS protection HI level threshold value can be set. The abnormal voltage is displayed in % based on 5V as
Protection operates when the voltage value of the de- 100%.
tection terminal exceeds this value.
6-2 PsPRT 069

DC_Lo: 0049 There is a history of protection function due to abnormal

DC output.
The DC protection LO level threshold value can be set. The abnormal voltage is displayed in % based on 5V as
Protection operates when the voltage value of the de- 100%.
tection terminal falls below this value.
6-3 DcPRT 059

DC_Hi: 0131
There is a history of protection function excessive heatsink
The DC protection HI level threshold value can be set. temperature. (R ch)
Protection operates when the voltage value of the de- The abnormal voltage is displayed in % based on 5V as
tection terminal exceeds this value. 500%.

6-4 TmRPRT 245

TEMP : 0089
There is a history of protection function excessive heatsink
The TEMP protection HI level threshold value can be temperature. (L ch)
set. The abnormal voltage is displayed in % based on 5V as
Protection operates when the voltage value of the de- 500%.
tection terminal exceeds this value.
6-4 TmLPRT 245
RX-797

* The numeric value in the diagram is for reference.

14
 RX-797

7. SOFT SWITCH 8. MICROPROCESSOR INFORMATION

The version, checksum and the port specified by the
Note) Changing the function setting may hinder the proper
microprocessor are displayed. The checksum is obtained
operation.
by adding the data at every 16 bits for each program
This menu is used to switch the function settings on P.C.B. area and expressing the result as a 4-figure hexadecimal
through the software so as to activate the product. data.
The operation mode can be changed by selecting the sub- * The numeric value in the diagram is for reference.
menu and then using the EDIT key.
The protection function follows the P.C.B. settings.
When connected to AC, the unit is initialized to the P.C.B.
setting. Display of each function after initialization varies VER. Z009
depending on settings on P.C.B. Software version of microprocessor

SW MODE: PCB, MODEL or FNC can be selected.

CHECK SUM:78E2
Checksum value of microprocessor
7.SW :PCB
OPE:06 XM:AB
MODEL SETTING: RX797, RX497 or RX397 can be se-
Software modules version of microprocessor
lected. (SW MODE: Selectable when MODEL has been se-
lected.)

7.MODEL :RX797 PORT:

The condition of ports for model detection
DESTINATION: UC / RL / A or BGE can be selected. (SW (Not applied to these models.)
MODE: Selectable when MODEL has been selected.)

7.DEST :UC EE SUM:0000

Checksum value of EEPROM
TUNER DEST INATION: UC, RL or ABGE can be selected.
(SW MODE: Selectable when FNC has been selected.)

7.TuDst :UC

TUNER TYPE: NRM, RDS or XM can be selected. (SW

MODE: Selectable when FNC has been selected.)

7.TuTyp :XM

ZONE2: NOT or EXIST can be selected. (SW MODE: Se-

lectable when FNC has been selected.)

7.ZONE2 :EXIST
DPX-1200
RX-797

Frequency Range
Tuner Dest Comment
FM AM
UC 87.5–107.9MHz/200kHz 530–1710kHz/10kHz
87.5–108.0MHz/50kHz 531–1611kHz/9kHz The frequency range is selected
RL
87.5–108.0MHz/100kHz 530–1710kHz/10kHz with Advanced Set Up
ABG 87.5–108.0MHz/50kHz 531–1611kHz/9kHz

15
 RX-797

■ AMP ADJUSTMENT

● CONFIRMATION OF IDLING CURRENT

1. Right after the power is turned on, confirm that the volt-
age across the terminals of R111–R135 (L ch) and R112–
R136 (R ch) are between 0.1mV to 10.0mV.
2. If the measured voltage exceeds 10.0mV, open (cut off)
R175 (L ch), R176 (R ch) and reconfirm the voltage.
3. Confirm that the voltage is between 0.20mV and 15.0mV
after 60 minutes.

0.1mV–10mV
(L ch)

0.1mV–10mV
(R ch)
R135 Cut

R136
R111 R175 (L ch)
R176 (R ch)

R112

R135 R136

R175 R176
RX-797

R111 R112

16
 RX-797

■ IC DATA
IC602 : M30626FHPFP (FUNCTION (2) P.C.B.)
16-bit Microprocessor

P21/A1/(/D1/D0)
P22/A2/(/D2/D1)
P23/A3/(/D3/D2)
P24/A4/(/D4/D3)
P25/A5/(/D5/D4)
P26/A6/(/D6/D5)
P27/A7/(/D7/D6)
P20/A0/(/D0/—)

P30/A8(/—/D7)
P15/D13/INT3
P16/D14/INT4
P17/D15/INT5
P12/D10

P14/D12

P32/A10

P34/A12
P35/A13
P36/A14
P37/A15
P40/A16
P41/A17
P42/A18
P43/A19
P13/D11

P33/A11
P10/D8

P31/A9
P11/D9

VCC
VSS
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
P07/D7 81 50 P44/CS0
P06/D6 82 49 P45/CS1
P05/D5 83 48 P46/CS2
P04/D4 84 47 P47/CS3
P03/D3 85 46 P50/WRL/WR
P02/D2 86 45 P51/WRH/BHE
P01/D1 87 44 P52/RD
P00/D0 88 43 P53/BCLK
P107/AN7/K13 89 42 P54/HLDA
P106/AN6/K12 90 41 P55/HOLD
P105/AN5/K11 91 40 P56/ALE
P104/AN4/K10 92 39 P57/RDY/CLKOUT
P103/AN3 93 38 P60/CTS0/RTS0
P102/AN2 94 37 P61/CLK0
P101/AN1 95 36 P62/RXD0
AVSS 96 35 P63/TXD0
P100/AN0 97 34 P64/CTS1/RTS1/CTS0/CLKS1
VREF 98 33 P65/CLK1
AVCC 99 32 P66/RXD1
P97/ADTRG/SIN4 100 31 P67/TXD1
10

12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
11
1
2
3
4
5
6
7
8
9
P96/ANEX1/SOUT4
P95/ANEX0/CLK4
P94/DA1/TB4IN
P93/DA0/TB3IN
P92/TB2IN/SOUT3
P91/TB1IN/SIN3
P90/TB0IN/CLK3
BYTE
CNVSS
P87/XCIN
P86/XCOUT
RESET
XOUT
VSS
XIN
VCC
P85/NMI
P84/INT2
P83/INT1
P82/INT0
P81/TA4IN/U
P80/TA4OUT/U
P77/TA3IN
P76/TA3OUT
P75/TA2IN/W
P74/TA2OUT/W
P73/CTS2/RTS2/TA1IN/V
P72/CLK2/TA1OUT/V
P71/RXD2/TA0IN/TB5IN
P70/TXD2/TA0OUT
No. Port Name I/O Function
1 P96/ANEX1 DTFD O FL Driver Tx DATA
2 P95/ANEX0 CKFD O FL Driver CLOCK
3 P94 O
4 P93 DEST1 I Model Distinction 1
5 P92/TB2in DEST0 I Model Distinction 0
6 P91/TB1in MOD1 I Destination Distinction 1 (Reserve)
7 P90/TB0in MOD0 I Destination Distinction 0 (Reserve)
8 BYTE BYTE MCU Vss: when single chip mode is used (Gnd)
9 CNVss CNVss MCU Vss: when single chip mode is used, Vcc: when flash writing is used (PullDown)
10 P87/Xcin /CEEEP O EEPROM CE
11 P86/Xcout N.C. O
12 /RESET /RESET MCU Reset
13 Xout Xout MCU Oscillator Out
14 Vss Vss MCU Ground (Gnd)
15 Xin Xin MCU Oscillator In
16 Vcc1 Vcc MCU Power Supply, +5V (Vcc)
17 P85/NMI NMI I Connect to Vcc because it is unused (PullUp)
18 P84/INT2 MPSW IRQ MAIN Power SW INT
19 P83/INT1 ZPSW IRQ Zone2 Power SW INT
20 P82/INT0 PDET IRQ Power Down Detect INT
21 P81 N.C. O (LevelConv)
22 P80 N.C. O (LevelConv)
23 P77 TRIG O Triger OUT
24 P76 /POMT O Pre Out Mute
25 P75/TA2in /Z2MT O Zone2 Mute
DPX-1200

26 P74/TA2out N.C. O
RX-797

27 P73/CTS2/RTS2/TA1in XMPWR O XM/DT BUS POWER CONTROL

28 P72/CLK2/TA1out /ICXM O DABIC IC Reset
29 P71/RXD2/SCL2/TA0in DRXM SI DABIC IC RxD (LevelConv)
30 P70/TXD2/SDA2/TA0out DTXM SO DABIC IC TxD (LevelConv)
31 P67/TXD1/SDA1 DTEV SO Zone2Volume Tx DATA(YAC526)
TXDF SO Data Transmit Terminal for AF220
32 P66/RXD1/SCL1 CEEV O Zone2Volume CE(YAC526)
RXDF SO Flash ROM RxD
33 P65/CLK1 CKEV SO Zone2Volume CLOCK(YAC526)
CLKF SO Clock Transmit Terminal for AF220

17
 RX-797

IC602 : M30626FHPFP (FUNCTION (2) P.C.B.)

16-bit Microprocessor

No. Port Name I/O Function

34 P64/CTS1/RTS1/CTS0/CLKS1 BSY O AF220 BUSY Signal Output
35 P63/TXD0/SDA0 DTIS SO Input Selector Tx DATA
36 P62/RXD0/SCL0 CEIS O Input Selector CE
37 P61/CLK0 CKIS SO Input Selector CLOCK
38 P60/CTS0/RTS0 DTRZ O Rec/Zone2 selecter DATA
39 P57/RDY/CLKout CKRZ O Rec/Zone2 selecter CLOCK
40 P56 N.C. O
41 P55 /EMP I For Flash Writing (LO) (PullDown)
42 P54 CER O RDS CE
43 P53 SCKR O RDS CLOCK
44 P52 SDRR I RDS Rx DATA
45 P51 SDTR O RDS Tx DATA
46 P50 /CE I For Flash Writing (HI) (PullUp)
47 P47 CEP O TUNER CE
48 P46 SCKP O TUNER CLOCK
49 P45 SDTP O TUNER Tx DATA
50 P44 /TMU O TUNER MUTE
51 P43 SDRP I+ TUNER Rx DATA
52 P42 TUNED I+ TUNER TUNED
53 P41 /ST I+ TUNER /ST
54 P40 N.C. O
55 P37 VIA O Video Input SelectorA (PullDown)
56 P36 VIB O Video Input SelectorB (PullDown)
57 P35 VRA O Video Rec SelectorA (PullDown)
58 P34 VRB O Video Rec SelectorB (PullDown)
59 P33 VZA O VIDEO Zone2 SelectorA
60 P32 VZB O VIDEO Zone2 SelectorB
61 P31 /SWMT O Sub Woofer Mute
62 Vcc2 Vcc MCU Power Supply, +5V (Vcc)
63 P30 /CDMT O CD Direct Mute
64 Vss Vss MCU Ground (Gnd)
65 P27 /MIMT O Main IN Mute
66 P26 PDon I+ Pure Direct ON Detect
67 P25 CDon I+ CD Direct Detect
68 P24 PLED O Pure Direct LED
69 P23 CLED O CD Direct/TapeMonitor LED
70 P22 PRY O Power Relay
71 P21 N.C. O
72 P20 HPRY O Head Phone Pelay
73 P17 PDET IRQ Power Down Detect INT
74 P16 SPSW IRQ SYSTEM Power SW INT(MasterPower)
75 P15 REM IRQ Remote Controler INT
76 P14 FBRY O Front B Speaker Relay
77 P13 FARY O Front A Speaker Relay
78 P12 VRup O Volume Up
79 P11 VRdn O Volume Down
80 P10 PRI I I Protection
81 P07 /PSV O Power save mode
82 P06 N.C. O
83 P05 /BLK O FL Driver /BLK
84 P04 ISA I Input Selector A (PullUp)
85 P03 ISB I Input Selector B (PullUp)
86 P02 LSBY O StandBy LED
87 P01 N.C. O
88 P00 N.C. O
89 P107/AN7/KI3 REC AD Rec/Zone2 selecter
90 P106/AN6/KI2 PRV AD PS Protection (PullUp)
RX-797

91 P105/AN5/KI1 PRD AD DC Protection (PullUp)

92 P104/AN4/KI0 THML AD THM L Protection (PullUp)
93 P103/AN3 THMR AD THM R Protection (PullUp)
94 P102/AN2 KEY0 AD AD Key 0
95 P101/AN1 KEY1 AD AD Key 1
96 Avss Avss MCU AD Ground (Gnd)
97 P100/AN0 DEST AD Destination Detect
98 Vref Vref MCU AD Reference (Vcc)
99 Avcc Avcc MCU AD Power Supply (Vcc)
100 P97/Adtrg CEFD O FL Driver CE

18
 RX-797

■ DISPLAY DATA

V801 : 15-BT-105GNK (WF519900)

^0 q

PATTERN AREA

● PIN CONNECTION

Note 1) F1, F2 ......... Filament

2) NP .............. No Pin
3) NX .............. No Extend Pin
4) P1~P35 ....... Datum Line
5) 1G~15G ...... Grid

● GRID ASSIGNMENT ● ANODE CONNECTION

DPX-1200
RX-797

19
 A B C D E

RX-797

1 ■ PRINTED CIRCUIT BOARD

XM P.C.B. (Side A) Lead Free Solder Used

U, C models
3

TRANSFORMER
POWER
2

Point e (Pin 28 of IC1)

FUNCTION (1)
W506
FUNCTION (2)
CB604
4

XM P.C.B. (Side B) Lead Free Solder Used

U, C models
5

20
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD

1

FUNCTION (1) P.C.B. (Side A)

FUNCTION (2) FUNCTION (2)
CB603 CB602

ZONE 2
OUT

OUT
(REC)

2 MD/TAPE

IN
(PLAY)

OUT

VCR

IN

DTV/CBL

3
DVD

XM OPERATION (2)
CB23 W401
FUNCTION (5)
CB552

FUNCTION (1) P.C.B. (Side B) Lead Free Solder Used FUNCTION (1)
Circuit No. U, C R, L A G, E
W506 O X X X
X: NOT USED
4 O: USED/APPLICABLE

21
6
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD

1

FUNCTION (2) P.C.B. (Side A) FUNCTION (2) P.C.B. (Side B) Lead Free Solder Used

2
Point q (Pin 13 of IC602)

TUNER PACK

FUNCTION (3)
CB451

XM
3 CB24

OPERATION (13)
CB301
FUNCTION (1)
CB501

1
FUNCTION (2)
FUNCTION (1)
CB502 Circuit No. U, C R, L A G, E
CB604 O X X X
OPERATION (2) R679, 681, 683, 686 O X X X
CB401 R687, 688 O X X X
R601 X O O O
IC603 X X X O
XL602 X X X O
C630, 632 X X X O
C622, 623 X X X O
OPERATION (1) C629 X X X O
CB801 C621, 631 X X X O
5 C627, 628, 633 X X X O
R698 X X X O
R710, 711 X X X O
R684 X X X O
MAIN (4) R714, 717 X X X O
CB284
R688 X X X O
R678 X X X O
R677 X X X O
L601 X X X O
OPERATION (2) Q609 X X X O
CB407 X: NOT USED
O: USED/APPLICABLE

22
6
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD

1

FUNCTION (3) P.C.B. FUNCTION (4) P.C.B. FUNCTION (5) P.C.B.

(Side A) (Side A) (Side A)
FUNCTION (1)
CB504

DVD SUB WOOFER

DTV/CBL PRE OUT

2
IN
MAIN IN
VCR

OUT
CONTROL OUT

MONITOR
OUT 2 IN

ZONE 2 REMOTE OUT

OUT
1
3 IN

FUNCTION (3)
Circuit No. U, C R, L A G, E
PN451 O X X X
X: NOT USED
O: USED/APPLICABLE
FUNCTION (2)
CB609

FUNCTION (3) P.C.B. FUNCTION (4) P.C.B.

(Side B) Lead Free Solder Used
(Side B) Lead Free Solder Used

23
6
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD

1

OPERATION (1) P.C.B. (Side A) OPERATION (4) P.C.B.

(Side A)
OPERATION (10) OPERATION (11) FUNCTION (2)
CB810 CB816 CB606

OPERATION (9)
1 2 3 4 5 6 7

CB753
8
OPERATION (7)
CB815 A/B/C/D/E

2
OPERATION (6)
CB811

ZONE CONTROL TUNING

EDIT MEMORY MODE

FM/AM
ZONE 2 TUNING/CH
ON/OFF

3 MAIN (4)
OPERATION (5) CB283
CB814

VOLUME

OPERATION (4) P.C.B.

(Side B) Lead Free Solder Used
OPERATION (1) P.C.B. (Side B) Lead Free Solder Used

24
6
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD

1

OPERATION (2) P.C.B. (Side A) OPERATION (3) P.C.B. (Side A)

FUNCTION (2)
CB611
FUNCTION (2) FUNCTION (1)
W601 CB503

OPERATION (2)
W405

2
OPERATION (9) CB752

LOUDNESS BALANCE TREBLE BASS

OPERATION (3) P.C.B. (Side B) Lead Free Solder Used

MAIN (1) CB103

1.5k

1.5k

OPERATION (3) CB751

CD DIRECT AMP PURE DIRECT OPERATION (8) W441

OPERATION (2) P.C.B. (Side B) Lead Free Solder Used

4
OPERATION (5) P.C.B. OPERATION (6) P.C.B.
(Side A) (Side A)

OPERATION (1) OPERATION (1)

W806 CB803

5 INPUT STANDBY/ON

MASTER

25
6
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD

1

OPERATION (7) P.C.B. OPERATION (8) P.C.B. OPERATION (9) P.C.B. OPERATION (10) P.C.B.
(Side A) (Side A) (Side A) (Side A)

OPERATION (2)
OPEARTION (1)

OPERATION (4)

OPERATION (2)
CB807

CB403
PHONES

CB431

CB406

OPERATION (1)
CB809
A B CD DIRECT AMP PURE DIRECT
SPEAKERS
2

OPERATION (7) P.C.B. OPERATION (11) P.C.B. OPERATION (13) P.C.B.

(Side B) Lead Free Solder Used (Side A) (Side A) FUNCTION (2)
CB607

3 REC OUT
PHONO

CD

OPERATION (1)
CB808

OPERATION (11) P.C.B. OPERATION (13) P.C.B.

(Side B) Lead Free Solder Used (Side B) Lead Free Solder Used

26
6
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD Lead Free Solder Used

1

MAIN (1) P.C.B. MAIN (7) P.C.B.

(Side A) (Side A)

2 OPERATION (2)
W404

Q122A Q124A Q122C Q124C

SPEAKERS
A
B

Q123A Q121A Q121C Q123C MAIN (1)

Circuit No. R, A, G, E, L U, C
C119–122, 162, 163, 168, 169 O X
R207, 208 O X
X: NOT USED
O: USED/APPLICABLE

MAIN (6) P.C.B.

(Side A)
5 IMPEDANCE
SELECTOR

MAIN (4)
CB281

MAIN (4)
CB282
MAIN (3) POWER
CB272
TRANSFORMER

27
6
 A B C D E F G H
RX-797

■ PRINTED CIRCUIT BOARD Lead Free Solder Used

1

MAIN (2) P.C.B. MAIN (3) P.C.B. MAIN (5) P.C.B. (Side A)
(Side A) (Side A)
2 CH2 2 CH1
R, L models
POWER TRANSFORMER (U, C, A, G, E)
or MAIN (5) W291 (R, L)
POWER TRANSFORMER
MAIN (8) W295
MAIN (2) CB257

MAIN (2) CB258

VOLTAGE SELECTOR
SW291
240V 1–2/5–6
220V 2–3/6–7
110V 3–4/7–8
120V 4–5/8–1
VOLTAGE
AC OUTLETS

SELECTOR

MAIN (1) MAIN (5)

W104
Circuit No. R L
CB293, 294 O X
MAIN (3) CB271 Point w
F291 O X
MAIN (2) CH 1 : (+) of C272 J298 X O
Circuit No. U, C R A G, E L
CH 2 : Collector of Q271
X: NOT USED
J252 X O O X O O: USED/APPLICABLE
CB253, 254 O X X O X
F251 O X X O X
4 X: NOT USED
O: USED/APPLICABLE

↑ ↑ ↑
AC POWER ON AC POWER OFF AC POWER ON MAIN (8) P.C.B.
(Connect the power cable) (Disconnect the power cable) (Connect the power cable)
(Side A)

MAIN (2)
CB252
WH BE
MAIN (4) P.C.B. (Side A)
MAIN (1) CB128
MAIN (1) CB132

POWER
OPERATION (1) W802 TRANSFORMER
FUNCTION (2) CB605 AC IN

28
6
 RX-797

■ PIN CONNECTION DIAGRAM

● ICs ● Diodes

LM61CIZ NJU7201L55 NJM7805FA PQ05RD11 µPC29M33T-E1-AZ TLP421 1SS355 1SS133 KBP103G S1NB20 S5VB20
1SS380 1SS176 S1NB60
MA8030-L 1SS270A
MA8056-M 1SR139
MA8075-H 1SR400
MA8051-M 1T2
4 MA8068-L MTZJ16A
3 Anode Anode
1: VIN 1: INPUT 1
MA8120-H MTZJ6.8B
1: OUTPUT
2: COMMON
2: VO 1 2 3 2: GND 2 1 4 MTZJ22B MTZJ10B
– –
3: GND 3: OUTPUT UDZ5.1BTE-17 MTZJ9.1B
3: GND 3: GND 3: INPUT 32 1 4: VC 4: GND UDZS3.0BTE-17 Cathode
MTZJ6.2B +
+
2: Vout 2: VIN 1 4 Cathode
1: +Vs 1: VOUT 2 3 AVRL161A1R1NTB MTZJ3.0A
RB500V-40

TC4013BP SN74AHC1G32DCKR NE5532DR NJM2068MD-TE2 AK4384ET SN74LV245APWR

● Transistors

2SC2412K (Q, R, S) 2SA1708 (S, T) 2SC1740S (Q, R, S) 2SA1015 (Y) 2SD2375 (Q, P) 2SA1358 (O, Y)
4 5 11 2SD1938F (S, T) 2SC4488 (S, T) 2SD1915F (S, T) 2SC1815 (Y) 2SC3421 (O, Y)
DTC144EKA DTA114ES 2SA2N5401C-AT
5 8
7 8 4
16
2SD1938F (S, T) DTC144ESA-TP 2AC2N5551C-AT
3 4 8 20 10
2SA1037K (Q, R, S) 2SC2705 (O, Y)
14 1
1 1 1 2SA970 (GR, BL)
1 2SA1145 (O, Y)
1

B
E B E
C C C
B E E B B EC
CE B

LC72722PM YAC526-EZE2 NJU7313AM BD3841FS LA7956 LB1641 2SA1694

2SC4467

16
13 13
17

24 15
24 12 12 30 9 10
32 16
B
C
1 E
1 1
1 1 1

● FETs
F2602E-01 M66003-0131FP M30626FHPFP
2SK3850

48 33 80 51
36 25
81 50
37 24 49 32

S
G
D
48 13
64 17
1 12 100 31
1 16
1 30

29
 RX-797

■ BLOCK DIAGRAM
OPERATION
• See page 32 → SCHEMATIC DIAGRAM
XM • See page 34 → SCHEMATIC DIAGRAM Muting RY103
Power
U, C models CD Direct SW Q401,402 Amp
XMDT 3 AK4384ET 11,10 IC26 19,22,25 SW401 C834,835
8,23 Head Phone
XM I2S 2ch DAC /MIMT
IC1 IC25 8,9,12
CD Direct On RY101
LPF/MIX Muting
CD Direct Off SubWoofer OUT Front A
IC510,504 Q351,356
IC401 C119,120

FM/AM +10.6dB/
TUNER IC509 2,29 +16dB RY102
IC351 Front B
FM/AM 7.2MHz Motor Volume Pure Direct SW
SW402 MAIN IN C121,122
VR431/IC431 –6dB

PHONO EQ 3,28
PHONO Pure Direct Off
IC301 /CDMT /POMTMIMT

NJU7313AM
Tone
OPERATION Muting Muting

Switch

IC501
Con/Balance Q354-355 PRE OUT
• See page 32 → SCHEMATIC DIAGRAM Q301,302
VR751-754
11dB 10,21
CD
ATT
MAIN • See page 33 → SCHEMATIC DIAGRAM
IC302
7,24
DVD
IC505
5,26
DTV
RY251 F252 ACH
Analog

IC506
SW101
4,27
VCR +B

C143
IC507 ACL

F251/J252

D120
11,20
MD/TAPE G

C144
IC508
ACL
25,26 REC A

REC OUT
VCR –B

TE251
1,2

RecOut/Zone2 Selector
INA
INB 3,4 ACH SW101
INC 5,6 23,24 REC B
MD/TAPE

BD3841FS
IND 7,8 R171

IC502
INE 9,10 ACL2 +15V
Q130 +15
INF 11,12

C160

D116-119
ING 13,14 /Z2MT R227 D121
INH 15,16
19,20 Volume IC 15,21 G
Muting

C161
YAC526 ZONE2 D122
Q501-504 R172
FUNCTION • See page 31 → SCHEMATIC DIAGRAM 13,24 IC503
–15V –15
ACL2 Q131

VCR 4 Input
DVD 6 Selector 1 –22V
MONITOR OUT ACL VP
DTV 8 LA7956 Q102

C803
IC451 D110

+
Composite

DVD G

Composite
RecOut
DVD 6 Selector 1
DTV/CBL DTV 8 LA7956 VCR-REC +5V
IC452 XM IC27
+5BUS
VCR-PB • See page 34 → +5V
SCHEMATIC DIAGRAM +5X
VCR 4 IC22
Zone2 U, C models
DVD 6 Selector 1 +3.3V
Zone2 +3.3X
DTV 8 LA7956 IC21

D21
C33
IC453
G
DETECT
20 POWER

/RESET
THMR
THML
PRD
PRV

FL1
PRI

OPERATION FL2
91

• See page 32 → SCHEMATIC DIAGRAM

80

90

92

93

12

75 70 Power
IR REMOTE

XMPWR
POWER RELEY IC251,252,253 Detector
U801
72,76,77 /Reset
SPEAKER RELEY
POWER SW/STANDY SW/ZONE2 SW 74,18,19
SW830/SW825/SW826 24,25,63,65 Q254
MUTE CONTROL

D259
VOLUME 78,79 81 D605
Micro Processor POWER SAVE
VR431, IC431 +5BU
M30622 27
XMPWR
INPUT SELECTOR 84,85 D604
IC602 55-60 s10 +5.5V
SW827 VIDEO SELECTOR +5M
IC601

Q252 RY251
KEY 94,95 ZONE2 VOLUME D603 Q605
SW801-818 +5S

D261
C261
SERIAL TUNER/RDS/XM
FL DISPLAY FL DRIVER 83,100,1,2 CONTROL
V801 IC801 ANALOG
13 15
G
XL601
16MHz
POWER RELAY POWER SAVE

30
 A B C D E F G H I J K

RX-797

IC351, 504–510: NJM2068MD-TE IC451–453: LA7956

■ SCHEMATIC DIAGRAM (FUNCTION) Dual OP-Amp Video Switch
1
6 dB
0.1 AMP
OUT1 1 8 +VCC
6.1
0.1 4-INPUT 1-OUTPUT
–IN1 2 7 OUT2 CONTROL
4.8 + – + – DRIVER VIDEO SWITCH
0.1 3.9 +IN1 3 6 –IN2
0
3.9 –VCC 4 5 +IN2
0
11.8 1 2 3 4 5 6 7 8 9
3.9 VIDEO A B VIN1 GND VIN2 VCC VIN3 VIN4
OUT
3.9
0
11.9
14.3

6.2 12.2
0.1 0.2 0.3
15.1
0.1 IC501: NJU7313AM
0.1
0.2 0.3
0.3
Analog Function Switch
3.9 11.8
0
3.9 L1 2 29 R1
2 0
11.8
0 L2 3 28 R2
3.9
4.8
L3 4 27 R3
3.9
0
L4 5 26 R4

LEVEL SHIFTER
LEVEL SHIFTER
L-COM1 6 25 R-COM1

LATCH

LATCH
14.7 6.2
L5 7 24 R5
0.1
0 0.1 L6 8 23 R6
0 3.9
0 L-COM2 9 22 R-COM2
0
3.9 L7 10 21 R7
11.8
0
3.9 L8 11 20 R8
0
0 L-COM3 12 19 R-COM3
-14.4 3.8
ST 14 17 DATA
CONTROL
VDD 30 16 CK

VEE 1 15 VSS
0 -14.7
NC 13 18 NC
3 0
0
-14.7
CD DIRECT AMP OFF
0

IC502 : BD3841FS
CD DIRECT AMP ON CD DIRECT AMP OFF Function Switch

RECC1

RECC2
RECA1

RECA2

RECB1

RECB2
0 0

DGND

OUT1

OUT2
GND

VCC
VEE

INI1

INI2
DA
CL
-14.7 -14.7
0 0

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

TO OPERATION (2) CB407

Page 33 B-1 Page 32 A-7 Page 32 K-6 LOGIC
Page 34 I-5
TO MAIN (4) CB284 TO OPERATION (1) CB801 TO OPERATION (13) CB301
TO XM CB23

Page 32 A-2
F-SW1: INPUT FUNCTION 1

+
–

–
F-SW2: INPUT FUNCTION 2
4

F-SW1

F-SW2
TO OPERATION (2) W401
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Page 32 A-4

INA1

INA2

INB1

INB2

INC1

INC2

IND1

IND2

INE1

INE2

INF1

INF2

ING1

ING2

INH1

INH2
0
13.2

0 0
CD DIRECT AMP ON
0 0 0

14.3
0
0 IC503 : YAC526-EZE2

TO OPERATION (2) CB401

0 14.3 0
0 0 0 0
-13.2 0 0 0
5.6 4.9 2 Channel High Grade Digital Volume
0 9.8 5.6 4.9 4.8
0 5.2 11.9
0 15.1
0 11.9

Page 32 A-3
0 5.6 4.9 4.2
13.2 0
5.5 12.4
0
0 4.8 IN1 24 100
5 0 0
0
5.6
0.1
0.1 4.8
0 ~ -95dB
21 OUT1
Vol B: 10k 0 ~ +31.5dB
0 4.8 OP Amp
5.5 11.2
0 0 0
0 0 REF1B 22
-14.1 REF1A 23
0 0 0
-14.1 0 Vol A: 15k
0
0
0
0 0 0
-13.2 10 TE1
0
Zero
AVDD Crossing 11 TE2
0 0 Detector 12 TE3
DGND 5 1 ZCEN1
13.2
Control
0 REF 6 Register
2 ZCEN2
AVSS 9 SDATAO (Open Drain)
0 0 Zero SDATAI
Crossing S/P 4
DVSS 7 Register 8 SCLK
Detector 16
0
0 0
CD DIRECT AMP OFF 3 CSN

Vol A: 15k
REF2A 14
0
0 0 REF2B 15
0
-13.2
Vol B: 10k 0 ~ +31.5dB
0 100

4.8
16 OUT2
0 ~ -95dB

0
IN2 13
OP Amp
0 0
6 4.8 4.8

4.8
4.8
4.8

4.8
4.8

4.8

4.7

4.8
4.8
4.5

4.1
4.8
4.1
0.3
0.3
0.3
0.3
0.3
0.3

4.8
0 0

0
0

0
0.1
0 0
14.9 4.8 0.1
0 -7.1
0 0 0 0.1
0
4.9
0 7.2 0 0 4.8
0.1
0 0
0 0
0.5 IC603 : LC72722PM
0.1
0 0
3.0
RDS Decoder
0.1
0 0

FL OUT
13.4 0 0 3.6 0
0

VREF
0

C IN
1.7
0 0
0 0 0 -14.5 0.1
0 0.9
0 0 0.9 0.1 1 5 6
0.1
0 0 4.8 VDDA 3 +
PLL CLOCK 14 VDDD
0 0 4.8 0.1
(57kHz) RECOVERY
REFERENCE (1187.5Hz)
0 0.1 VOLTAGE
0
0
0.1 0.1 VSSA 4 15 VSSD
0 4.8 0.1 VREF
-13.2
4.8 4.8 57kHz DATA
MPX IN 2 ANTIALIASING SMOOTHING
0 0.1 bpf
FILTER DECODER 19 RDS-ID
3.6 1.7 4.8 FILTER

4.8

4.8
4.8

4.8

4.8
0 15.1 (SCF)

DO 20
7 0 0
CL 21 RAM ERROR CORRECTION SYNC/EC 18 SYNC

5.1
4.8

4.8

4.8

4.8
0
0
0
0
0
0
0 -14.9 DI CCB (24 BLOCK DATA) (SOFT DECISION) CONTROLLER

0
22

4.8
2.4

2.4
4.8

0.1
24 SYR

0
0

4.8
CE 23
T1 CLK(4.332MHz)
7 MEMORY
T2 8 CONTROL
TEST SYNC SYNC
T3 9 OSC/DIVIDER DETECT-1 DETECT-2
T4 10

0 0 4.8
0 0 11 16 17 13 12
0 0 4.8

X IN

X OUT
-14.7

T5
T6
T7
0 0
0.7 15.1 15.1
0 7.2 6.2
0.7
0 0 6.2 0
7.9 6.8
-6.1 -6.1
0 0 4.8
0.7 -6.1 0 7.9 6.8
0.7 6.2 0 4.1
4.1
0 0
0 0
0 0
Point q (Pin 13 of IC602)
0 4.8
0 0
0 6.2
TO XM CB24
Page 34 I-3

4.8
0
6.2
0.5
-14.7 4.8
8 0.1 0.5

0 0
-7.1
-14.9
-6.1
-14.9 1
0 0 4.8

4.8 4.1

* All voltages are measured with a 10MΩ/V DC electronic volt meter.

4.8

4.1
4.8
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
31
 A B C D E F G H I J K L

RX-797

■ SCHEMATIC DIAGRAM (OPERATION)

1

IC301, 302, 401, 751:

CD DIRECT AMP ON NJM2068MD-TE
Dual OP-Amp
15.1 13.7

15.1 13.7 OUT1 1 8 +VCC

11.7 13.9
–IN1 2 7 OUT2
0 0 + – + –
+IN1 3 6 –IN2 PURE DIRECT OFF
–VCC 4 5 +IN2
0 0

CD DIRECT AMP OFF

TO MAIN (1) CB103

Page 33 A-6
2 0
TO FUNCTION (2) CB611

0 -14.6
14.4
Page 31 E-4

0 -14.6 0.1
0.1
0.1
0

0.1

PURE DIRECT OFF PURE DIRECT ON 0

-14.3 0.7
TO FUNCTION (2) W601

0 13.0
Page 31 E-5

0 0
3

IC431: LB1641
Motor Driver

VCC 2

VCC 1
OUT 1

OUT 2
P1

P2
0
TO FUNCTION (1) CB503

3 2 8 10 9 7
0.6 IC801: M66003-0131FP
Display Driver
Page 31 E-5

0.8

PRE DRIVER
0 0.8

4.7 4 VZ Display code

4.7 RAM CGROM
(35 bit x 166) 44 SEG00
0 15.1 (8-bit x 60)
Code Segment 19 SEG25
0 0 write output
0.8 13.4
17 SEG26
circuit
4 -12.8
0.6 CS 2 Serial data
dot data
CGROM
(35 bit x 16)
9 SEG34
write
SCK 3 receive
IN 1 5 INPUT LOGIC 6 IN 2 circuit Code/
SDATA 4 command
CD DIRECT AMP OFF GND 1 control 45 SEG35
circuit DIG11/
52
SEG42
51 DIG12/
SEG41
code Segment DIG13/
select 50
digit SEG40
select/ 49 DIG14/
XIN 7 Clock output SEG39
timing Display
generator clock controller scan pulse circuit 48 DIG15/
XOUT 6 SEG38
47 DIG16/
SEG37
-15.3

-14.6
-16.2
-16.2
-17.8
-17.8
-19.5
-16.2
-16.2
-21.1
-21.1
-21.1
-21.1
-16.2
-16.2
-21.1
-21.1
-16.2
-16.2
-21.1
-21.1
-21.1
-16.3
-16.2
-21.1
-19.5
-21.1
-16.2
-17.8
-19.4
-17.8
-16.0
-16.1
-16.2
-17.8
-21.1

-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5

-15.3
46 DIG17/
SEG36

63 DIG00
Digit
RESET 1 output
Vcc1 8 circuit
53 DIG10
Vcc2 18
5 Vss 5
Vp 64
-21.1
-16.2
-16.3
-21.1
-21.1
-21.1
-16.2
-16.2
-21.2
-21.1
-16.3
-21.1
-16.2
-21.1

-21.1
4.8

-21.1 -16.2
-15.7
-19.5 -16.2
-21.1 -16.2
-16.2 -19.5
-18.5
-17.8 -17.8
-19.4 -16.2
-17.8 -16.2
-16.0 -14.6
-16.1 -18.5 14.7
-16.2 0
2.1
-17.8 0 0
-21.2 2.2
0 -21.3 CD DIRECT AMP OFF
4.8

6 4.8
4.8
4.8

-19.5 4.8
-19.4
-19.5

TO FUNCTION (2) CB607

-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-19.5
-21.3

Page 31 H-4
0

0 0

-14.5

0 0 0 0
14.7
0

7 0 0

0
TO FUNCTION (2) CB606

4.8
4.8
0

0.8
0
Page 31 G-4

0
CD DIRECT AMP ON
0.8
0

0 0

-14.5

* All voltages are measured with a 10MΩ/V DC electronic volt meter.

* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
Page 33 B-1
TO MAIN (4) CB283
* Schematic diagram is subject to change without notice.

32
 A B C D E F G H I J K

RX-797

IC101, 102 : LM61CIZ

■ SCHEMATIC DIAGRAM (MAIN) Temperature Sensor
1
Page 32 E-8 Page 31 F-4 +Vs

TO OPERATION (1) W802 TO FUNCTION (2) CB605 TO POWER TRANSFORMER

Vout

GND

TO POWER TRANSFORMER
6.0
0.9 AC81.4
0
3 19.2 19.2

AC66.0
19.1 0.1 19.1 19.1
15.1 19.1
0.7 19.1 0 -19.6 55.7 (45.1)
0.1 0 0
AC30.9
6.0 15.6 0 0 0 0
Point w
0.9 19.0
0
-19.6
CH 1 : (+) of C272
0.7
-55.8 CH 2 : Collector of Q271
15.6 (-45.1)

0 0
19.1 -19.6
0
-19.0
-21.6
-15.5
-5.7 -19.6
-14.8
-21.6
-15.5

TO MAIN (2) CB257

-19.6 -21.5 -32.6 -33.2 0.1

Page 33 K-6
-14.9
4

TO POWER TRANSFORMER
↑ ↑
AC POWER ON AC POWER OFF
2 CH1 (Connect the power cable) (Disconnect the power cable)
55.2

55.7 5.4
55.2 55.6
55.7 2 CH2
55.2 55.2 55.7
1.6 0 4.8

54.6 54.6
1.1 0 55.7
1.2 4.7
0.6
0.6
55.4 0
0.6 4.9
5 1.2
0 0
6.9
0.2

-0.4 0 0 4.9
0
0
-1.0

0
0
0.6 0.6
0.1 0.1

-54.8 -54.7
↑
AC POWER ON
3.4
(Connect the power cable)
9.8 0
0
-54.8 -54.7
-0.5 -0.5
3.7 TO POWER TRANSFORMER
-1.1 -1.1
or
-54.1 0 -55.8
-0.5 Page 33 I-4
-54.8 TO MAIN (5) W291
6 -54.8
-54.7
-54.7 -55.8
-55.8
-54.7
0
-54.7
-55.3 -54.7

0
TO OPERATION (2) W404

SPEAKERS
Page 32 E-2

23.9
23.9
0 -18.3

0
-55.3 -55.3 -29.1
-54.7
0
~
-54.8 -54.7 -54.8 -54.2
-29.1 IC252 : TC4013BP
-54.2
-54.8 Dual D Flip Flop
-54.8 -28.3 AC6.5
~ ~
-54.2
7 -1.0
-0.5
0
-54.2
0.2 1
-28.2 ~ 1Q 14 VDD
-1.0 Q
-0.5 ~ -29.1
-0.5 -22.8 1Q 2 Q 13 2Q
~ -29.1
-54.8 -54.7 Q
0 0 -28.5 3
~ -29.1 1CP CP Q 12 2Q
-29.1
-29.1 4 11
-29.1 1CL CL CP 2CP

1DATA 5 D CL 10 2CL

~ ~ ~ 9.9 1PR 6 PR D 9
-54.8 -54.7 2DATA
0.1 0.1
VSS 7 PR 8 2PR
0.7 0.7 -29.1
0

0.8 0 9.9
-1.0 0.1
0.1
-0.5
0 0.1
1.2 0 55.4
0.6
0.6
8 0.7
1.2
1.2 0
55.7
54.6 54.6
54.6 0.6
55.2 55.7
55.7
55.2
* All voltages are measured with a 10MΩ/V DC electronic volt meter.
* Components having special characteristics are marked Z and
55.7
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.

33
 A B C D E F G H I J K L

RX-797

■ SCHEMATIC DIAGRAM (XM)

1

3
2

1.2
1.2

1.2
1.2
3.3

3.3
0

0
0 0
1.6 1.2
3.3 0
1.6
0 3.3
3 0 0
5.1

TO FUNCTION (2) CB604

3.3
0 0
5.1

Page 31 E-8
3.3 3.3
3.3 3.3 0
3.3 4.8 0
0 0 4.8 3.3
0 1.2
~
~ 0
3.3

3.3
0

~ ~
0 2.1
~
0

0
~

0
0

4 0
3.3 0

~
~ 0
7.2

TO FUNCTION (1) W506

0 5.1
0 0
~ 0

Page 31 C-4
4.8 2.6
0 2.6
0 2.6

0
5.1 5.1 0
0
-7.1
5

11.0
5.3
0.4
4.8
AC9.2
3.3 5.1 5.1 11.0 11.0
0
6 3.3 5.1
5.0
5.3 3.3 5.1
0.4 5.0

TO POWER TRANSFORMER
0 0 0 0
0

IC24 : SN74LV245APWR
Octal 3-State Bus Transceivers IC25 : AK4384ET
D/A Convertter
DIR 1 20 VCC

A1 2 19 ENG
P/S MCLK Point e (Pin 28 of IC1)
9 1
14 VDD
A2 3 18 B1
13 VSS
A3 4 17 B2 IC26 : NE5532DR IC27 : PQ05RD11 DE-EMPHASIS CLOCK
8 CONTROL DIVIDER 12 VCOM
Dual OP-Amp Rgulator SMUTE/CSN 6
µP
A4 5 16 B3
ACKS/CCLK 7
INTERFACE 15 DZFR
A5 6 15 B4 DIF0/CDTI 8
IC23 : SN74AHCT1G32DCKR 12 DZFL
Single 2 Input OR A6 7 14 B5 8X ∆∑
OUT1 1 8 +VCC VIN 1 2 VO
LRCK 4 AUDIO
ATT INTERPOLATOR MODULATOR
SCF 11 AOUTL * All voltages are measured with a 10MΩ/V DC electronic volt meter.
A7 8 13 B6 –IN1 2 7 OUT2 BICK 2 DATA * Components having special characteristics are marked Z and
A 1 5 VCC + – + – IC
A8 9 12 B7 +IN1 3 6 –IN2
SDTI 3 INTERFACE
8X ∆∑ must be replaced with parts having specifications equal to
B 2 ATT SCF 10 AOUTR
–VCC 4 5 +IN2 4 CV INTERPOLATOR MODULATOR those originally installed.
GND 3 4 Y GND 10 11 B8
3 5
* Schematic diagram is subject to change without notice.
GND PDN

34
 RX-797

PARTS LIST
■ ELECTRICAL PARTS ■ WARNING
Components having special characteristics are marked Z and must be replaced
with parts having specifications equal to those originally installed.

ABBREVIATIONS IN THIS LIST ARE AS FOLLOWS :

C.A.EL.CHP : CHIP ALUMI. ELECTROLYTIC CAP L.EMIT : LIGHT EMITTING MODULE

C.CE : CERAMIC CAP LED.DSPLY : LED DISPLAY
C.CE.ARRAY : CERAMIC CAP ARRAY LED.INFRD : LED, INFRARED
C.CE.CHP : CHIP CERAMIC CAP MODUL.RF : MODULATOR, RF
C.CE.ML : MULTILAYER CERAMIC CAP PHOT.CPL : PHOTO COUPLER
C.CE.M.CHP : CHIP MULTILAYER CERAMIC CAP PHOT.INTR : PHOTO INTERRUPTER
C.CE.SAFTY : RECOGNIZED CERAMIC CAP PHOT.RFLCT : PHOTO REFLECTOR
C.CE.TUBLR : CERAMIC TUBULAR CAP PIN.TEST : PIN, TEST POINT
C.CE.SMI : SEMI CONDUCTIVE CERAMIC CAP PLST.RIVET : PLASTIC RIVET
C.EL : ELECTROLYTIC CAP R.ARRAY : RESISTOR ARRAY
C.MICA : MICA CAP R.CAR : CARBON RESISTOR
C.ML.FLM : MULTILAYER FILM CAP R.CAR.CHP : CHIP RESISTOR
C.MP : METALLIZED PAPER CAP R.CAR.FP : FLAME PROOF CARBON RESISTOR
C.MYLAR : MYLAR FILM CAP R.CEMENT : CEMENT RESISTOR
C.MYLAR.ML : MULTILAYER MYLAR FILM CAP R.FUS : FUSABLE RESISTOR
C.PAPER : PAPER CAPACITOR R.MTL.CHP : CHIP METAL FILM RESISTOR
C.PLS : POLYSTYRENE FILM CAP R.MTL.FLM : METAL FILM RESISTOR
C.POL : POLYESTER FILM CAP R.MTL.OXD : METAL OXIDE FILM RESISTOR
C.POLY : POLYETHYLENE FILM CAP R.MTL.PLAT : METAL PLATE RESISTOR
C.PP : POLYPROPYLENE FILM CAP RSNR.CE : CERAMIC RESONATOR
C.TNTL : TANTALUM CAP RSNR.CRYS : CRYSTAL RESONATOR
C.TNTL.CHP : CHIP TANTALUM CAP R.TW.CEM : TWIN CEMENT FIXED RESISTOR
C.TRIM : TRIMMER CAP SCR.BND.HD : BIND HEAD B-TITE SCREW
CN : CONNECTOR SCR.BW.HD : BW HEAD TAPPING SCREW
CN.BS.PIN : CONNECTOR, BASE PIN SCR.CUP : CUP TITE SCREW
CN.CANNON : CONNECTOR, CANNON SCR.TERM : SCREW TERMINAL
CN.DIN : CONNECTOR, DIN SCR.TR : SCREW, TRANSISTOR
CN.FLAT : CONNECTOR, FLAT CABLE SUPRT.PCB : SUPPORT, P.C.B.
CN.POST : CONNECTOR, BASE POST SURG.PRTCT : SURGE PROTECTOR
COIL.MX.AM : COIL, AM MIX SW.TACT : TACT SWITCH
COIL.AT.FM : COIL, FM ANTENNA SW.LEAF : LEAF SWITCH
COIL.DT.FM : COIL, FM DETECT SW.LEVER : LEVER SWITCH
COIL.MX.FM : COIL, FM MIX SW.MICRO : MICRO SWITCH
COIL.OUTPT : OUTPUT COIL SW.PUSH : PUSH SWITCH
DIOD.ARRAY : DIODE ARRAY SW.RT.ENC : ROTARY ENCODER
DIODE.BRG : DIODE BRIDGE SW.RT.MTR : ROTARY SWITCH WITH MOTOR
DIODE.CHP : CHIP DIODE SW.RT : ROTARY SWITCH
DIODE.SHOT : SCHOTTKY BARRIER DIODE SW.SLIDE : SLIDE SWITCH
DIODE.VAR : VARACTOR DIODE TERM.SP : SPEAKER TERMINAL
DIOD.Z.CHP : CHIP ZENER DIODE TERM.WRAP : WRAPPING TERMINAL
DIODE.ZENR : ZENER DIODE THRMST.CHP : CHIP THERMISTOR
DSCR.CE : CERAMIC DISCRIMINATOR TR.CHP : CHIP TRANSISTOR
FER.BEAD : FERRITE BEADS TR.DGT : DIGITAL TRANSISTOR
FER.CORE : FERRITE CORE TR.DGT.CHP : CHIP DIGITAL TRANSISTOR
FET.CHP : CHIP FET TRANS : TRANSFORMER
FL.DSPLY : FLUORESCENT DISPLAY TRANS.PULS : PULSE TRANSFORMER
FLTR.CE : CERAMIC FILTER TRANS.PWR : POWER TRANSFORMER ASS’y
FLTR.COMB : COMB FILTER MODULE TUNER.AM : TUNER PACK, AM
FLTR.LC.RF : LC FILTER ,EMI TUNER.FM : TUNER PACK, FM
DPX-1200

GND.MTL : GROUND PLATE TUNER.PK : FRONT-END TUNER PACK

RX-797

GND.TERM : GROUND TERMINAL VR : ROTARY POTENTIOMETER

HOLDER.FUS : FUSE HOLDER VR.MTR : POTENTIOMETER WITH MOTOR
IC.PRTCT : IC PROTECTOR VR.SW : POTENTIOMETER WITH ROTARY SW
JUMPER.CN : JUMPER CONNECTOR VR.SLIDE : SLIDE POTENTIOMETER
JUMPER.TST : JUMPER, TEST POINT VR.TRIM : TRIMMER POTENTIOMETER
L.DTCT : LIGHT DETECTING MODULE

Note) Those parts marked with “#” are not included in the P.C.B. ass'y.

35
 RX-797

P.C.B. FUNCTION
RX-797

36
 RX-797

P.C.B. FUNCTION & OPERATION

DPX-1200
RX-797

37
 RX-797

P.C.B. OPERATION & MAIN

Z
RX-797

38
 RX-797

P.C.B. MAIN

Z
Z
Z
Z
Z

Z
Z
Z
Z
Z
Z
Z
Z
Z
Z

Z
Z

Z
DPX-1200

Z
RX-797

Z
Z
Z Z
Z
Z
Z

39
 RX-797

P.C.B. MAIN & XM

Z
Z

Z
Z
Z
Z
Z

Z
Z
Z
Z Z

Z
RX-797

40
 RX-797

CHIP RESISTORS Parts List for Carbon Resistors

Value 1/4W Type Part No. 1/6W Type Part No. Value 1/4W Type Part No. 1/6W Type Part No.
■ NOTE
● The chip resistor is not supplied as a replacement part. 1.0 Ω HJ35 3100 HF85 3100 10 kΩ HF45 7100 HF45 7100

● When a chip resistor is necessary, use the following part. 1.8 Ω HJ35 3180 ❊ 11 kΩ HF45 7110 HF45 7110

AAX60720: CHIP RESISTOR SAMPLE BOOK 2.2 Ω HJ35 3220 HF85 3220 12 kΩ HJ35 7120 HF85 7120
3.3 Ω HJ35 3330 HF85 3330 13 kΩ HF45 7130 HF45 7130
4.7 Ω HJ35 3470 HF85 3470 15 kΩ HF45 7150 HF45 7150
5.6 Ω HJ35 3560 HF85 3560 18 kΩ HF45 7180 HF45 7180
10 Ω HF45 4100 HF45 4100 22 kΩ HF45 7220 HF45 7220
15 Ω HJ35 4150 HF85 4150 24 kΩ HF45 7240 HF45 7240
22 Ω HF45 4220 HF45 4220 27 kΩ HJ35 7270 HF85 7270
27 Ω HJ35 4270 HF85 4270 30 kΩ HF45 7300 HF45 7300
33 Ω HF45 4330 HF45 4330 33 kΩ HF45 7330 HF45 7330
39 Ω HJ35 4470 HF85 4390 36 kΩ HF45 7360 HF45 7360
47 Ω HF45 4470 HF45 4470 39 kΩ HF45 7390 HF45 7390
56 Ω HF45 4560 HF45 4560 47 kΩ HF45 7470 HF45 7470
68 Ω HF45 4680 HF45 4680 51 kΩ HF45 7510 HF45 7510
75 Ω HF45 4750 HF45 4750 56 kΩ HF45 7560 HF45 7560
82 Ω HF45 4820 HF45 4820 62 kΩ HF45 7620 HF45 7620
91 Ω HF45 4910 HF45 4910 68 kΩ HF45 7680 HF45 7680
100 Ω HF45 5100 HF45 5100 82 kΩ HF45 7820 HF45 7820
110 Ω HJ35 5110 HF85 5110 91 kΩ HF45 7910 HF45 7910
120 Ω HF45 5120 HF45 5120 100 kΩ HF45 8100 HF45 8100
150 Ω HF45 5150 HF45 5150 110 kΩ HF45 8110 HF45 8110
160 Ω HJ35 5160 ❊ 120 kΩ HF45 8120 HF45 8120
180 Ω HF45 5180 HF45 5180 150 kΩ HF45 8150 HF45 8150
200 Ω HF45 5200 HF45 5200 180 kΩ HF45 8180 HF45 8180
220 Ω HF45 5220 HF45 5220 220 kΩ HJ35 8220 HF85 8220
270 Ω HF45 5270 HF45 5270 270 kΩ HF45 8270 HF45 8270
330 Ω HF45 5330 HF45 5330 300 kΩ HF45 8300 HF45 8300
390 Ω HF45 5390 HF45 5390 330 kΩ HF45 8330 HF45 8330
430 Ω HF45 5430 HF45 5430 390 kΩ HJ35 8390 HF85 8390
470 Ω HF45 5470 HF45 5470 470 kΩ HF45 8470 HF45 8470
510 Ω HF45 5510 HF45 5510 560 kΩ HJ35 8560 HF85 8560
560 Ω HF45 5560 HF45 5560 680 kΩ HJ35 8680 HF85 8680
680 Ω HF45 5680 HF45 5680 820 kΩ HJ35 8820 HF85 8820
820 Ω HF45 5820 HF45 5820 1.0 MΩ HF45 9100 HF45 9100
910 Ω HF45 5910 HF45 5910 1.2 MΩ HJ35 9120 ❊
1.0 kΩ HF45 6100 HF45 6100 1.5 MΩ HJ35 9150 HF85 9150
1.2 kΩ HF45 6120 HF45 6120 1.8 MΩ HJ35 9180 HF85 9180
1.5 kΩ HF45 6150 HF45 6150 2.2 MΩ HJ35 9220 HF85 9220
1.8 kΩ HF45 6180 HF45 6180 3.3 MΩ HJ35 9330 HF85 9330
2.0 kΩ HJ35 6200 HF85 6200 3.9 MΩ HJ35 9390 ❊
2.2 kΩ HF45 6220 HF45 6220 4.7 MΩ HJ35 9470 HF85 9470
2.4 kΩ HJ35 6240 HF85 6240
2.7 kΩ HF45 6270 HF45 6270
3.0 kΩ HF45 6300 HF45 6300
1/4W Type
3.3 kΩ HF45 6330 HF45 6330
HF45
3.6 kΩ HJ35 6360 HF85 6360 1/4W Type
1/6W Type
3.9 kΩ HF45 6390 HF45 6390 HJ35
HF85
4.7 kΩ HF45 6470 HF45 6470 10mm
5mm
5.1 kΩ HF45 6510 HF45 6510
5.6 kΩ HF45 6560 HF45 6560
6.8 kΩ HF45 6680 HF45 6680
8.2 kΩ HF45 6820 HF45 6820
9.1 kΩ HF45 6910 HF45 6910
1992

41
 1 2 3 4 5 6 7 8

RX-797
120
■ EXPLODED VIEW R, L models 129
A
129
6 (2)
120 128
207 13
120
123

120
202-1 6 (8)
200-1
6 (5) 18 127
6 (3)
123 120
200 202 206 123 120
123
B 120
126
5 (5)
8 15 103
203 204 205
120 5
5 (3)
(4)

172
5
7 (13)
(1)
10
129
1-5 11 5 (2)
16 123 6 (7) 6 (6)
122
C 129 1-4 3-42
101
3-42
1-6 124
17
3-43
125
20 124
1-1 126 118
1-4
1-5 3-43
112 125
2-122 6 (1)

1-7 6 (4)
7 (6) 123 3-43
129 2-120
7 (5) 105
D 2-122
2-60 7 (1)
118
113 7 (11)
115
130
7 (10)
2-122
7 (7)
3-43
2-121 129
2-50
7 (3)

2-120
125
2-20 2-120 1-8

E 2-120 110
2-121 7 131 110
2-20
(8) 129
2-30 129
2-121
2-70
7 (2) 105
129
7 (9) 118
111
2-40 116 7 (4) 129 129
2-120

42
F
 RX-797

■ MECHANICAL PARTS

Ref. Ref.
No. Part No. Description Remarks Markets No. Part No. Description Remarks Markets

Z
Z
Z
Z
Z
Z
Z
Z
Z

* New Parts * New Parts

43
 1 2 3 4 5 6 7 8

RX-797

A REMOTE CONTROL RAX100/RAX101

■ SCHEMATIC DIAGRAM DATA CODE LIST
Key CODE
Function
No. COMMON CD TAPE MD CD-R DVD TUNER XM
R3 1 TV POWER - - - - - - - -
0
JP1 JP2 2 AV POWER - - - - 7F-80 7C-80 - -
+ + 1 30 3 STANDBY 7E-7F - - - - - - -
P0D2 P1A2
3.0V
C1 C2 4 SYSTEM POWER 7E-7E - - - - - - -
47 F 220 F 2 29
OPEN P0D3 P0D1 5 CD 7A-15 - - - - - - -
3 28 6 MD/TAPE 7A-18 - - - - - - -
P1B/INT P0D0
7 TUNER 7A-16 - - - - - - -
4 27
P0E0 P0C3 8 XM 7A-B4 - - - - - - -
B 5
P0E1 P0C2
26 9 DVD 7A-C1 - - - - - - -
R1

IC1: PD17242MC-114
2 (1/4W) 10 DTV/CBL 7A-54 - - - - - - -
6 25
D1 P0E2 P0C1 11 VCR 7A-0F - - - - - - -
SID303C-01
7 24 12 PHONO 7A-14 - - - - - - -
P0E3 P0C0
R2 SLEEP 6CH INPUT AMP VOLUME - 7 MENU
13 REC/DISC SKIP - 7A-4F 7A-04 79-AF - 7C-8B - -
22 8 23
Q1 REM P0B3
TUNER AUDIO FF VOLUME + 8 14 PAUSE - 7A-09 7A-06 79-A9 7F-83 7C-83 - -

>
2SC3265-Y C3
9
VDD P0B2
22 15 CODE SET - - - - - - - -
MD/CD-R PAUSE STOP INPUT 5 TITLE DISPLAY
0.1 F 16 SPEAKERS A 7A-9A - - - - - - -
10 21
XOUT P0B1
CD REC REW CH - 4 ENTER 17 SKIP - - 7A-0B 7A-07 A9-AB 7F-86 7C-B9 7A-A4 -

<
T1
X1 11
XIN P0B0
20 18 PLAY - 7A-08 7A-00 79-A8 7F-82 7C-82 - -
4MHz SYSTEM POWER V-AUX CODE SET CH + 3 +10 RETURN
19 SKIP + - 7A-0A 7A-40 79-AE 7F-87 7C-BA 7A-A5 -
12 19
GND P0A3 20 SPEAKERS B 7A-9B - - - - - - -
STANDBY VCR SKIP + MUTE 2 0 >
D3 R4
RLS-73 100k 13
RESETPU P0A2
18 21 REW - 7A-OD 7A-01 79-AC 7F-88 7C-86 7A-A6 -
AV POWER D-TV/CBL PLAY VOL - 1 9 SELECT
22 STOP - 7A-09 7A-03 79-AA 7F-84 7C-85 - -
C IC2
2
2.1V
1 14
P1A0 P0A1
17
3 TV POWER DVD SKIP- VOL + MUTE 8 < 23 FF - 7A-0C 7A-02 79-AD 7F-89 7C-87 7A-A7 -
C4
0.1 F
T2 15
P1A1 P0A0
16 24 SLEEP 7A-57 - - - - - - -
25 TV VOL + - - - - - - - -
26 TV VOL - - - - - - - - -
27 TV MUTE - - - - - - - -
NOT MOUNTED 28 TV VH + - - - - - - - -
29 TV CH - - - - - - - - -
30 TV INPUT - - - - - - - -
31 VOL up 7A-1A - - - - - - -
32 VOL down 7A-1B - - - - - - -
33 MUTE 7A-1C - - - - - - -
34 1 - 79-11 - 79-85 7F-91 7C-94 7A-E5 7A-61
35 2 - 79-12 - 79-86 7F-92 7C-95 7A-E6 7A-62
D ▼ RAX100 (U, C models) ▼ RAX101 (R, A, G, E, L models) KEY NO. LAYOUT
36 3 - 79-13 - 79-87 7F-93 7C-96 7A-E7 7A-63
37 4 - 79-14 - 79-88 7F-94 7C-97 7A-E8 7A-64
38 5 - 79-15 - 79-89 7F-95 7C-98 7A-E9 7A-65
39 6 - 79-16 - 79-8A 7F-96 7C-99 7A-EA 7A-66
1 2 3 4
40 7 - 79-17 - 79-8B 7F-97 7C-9A 7A-EB 7A-67
41 8 - 79-18 - 79-8C 7F-98 7C-9B 7A-EC 7A-68
5 6 7 8
42 9 - 79-19 - 79-8D 7F-99 7C-9C 7A-B1 7A-69
9 10 11 12
43 0 - 79-10 - 79-8E 7F-90 7C-93 7A-B2 7A-60
13 14 15 16
44 +10 - 9-1A - 79-8F 7F-9A 7C-9D - -
17 18 19 20 45 ENT - 79-0B - - 7F-8A 7C-9E 7A-B3 7A-8F
21 22 23 24 46 TITLE - - - - - 7C-B1 7A-AE 7A-70
25 28 31 47 UP - - - - - 7C-B4 7A-10 7A-6A
26 29 32 48 MENU - - - - - 7C-B2 7A-AB 7A-6D
E 27 30 33 49 LEFT - - - - - 7C-B5 7A-AC 7A-6E
34 35 36 37
50 SELECT - - - - - 7C-B8 7A-AD 7A-6F
38 39 40 41
51 RIGHT - - - - - 7C-B6 7A-12 7A-6C
42 43 44 45
52 RETURN - - - - - 7C-B7 7A-AF 7A-71
53 DOWN - - - - - 7C-B3 7A-11 7A-6B
46 47 48
54 DISPLAY - 79-0A - 79-A5 7F-9E 7C-A6 7A-B0 7A-72
49 50 51

52 53 54

44
F
 RX-797

REMOTE CONTROL RAX17

■ SCHEMATIC DIAGRAM KEY NO. LAYOUT
K11 K21
+3V

SW2
K3 K7 K25 K26 2
ZONE3
3 4 5 6
ZONE2 K4 K8 K19 K29
D1
SW1 1 KI/O6 KI/O5 20 7 8 9 10
ID2 K12 K15 K22
2 19
KI/O7 KI/O4 11 12 13 14

µPD67AMC–312-5A4-E1-A
ID1 3 S0 18
KI/O3 K13 K17 K27
4 S1/LED 17 15 16
Q1 KI/O2
R2
47Ω 5 REM 16 K5 K9 K18 K23
KI/O1 18
17

U1
6 VDD KI/O0 15
K6 K10 K20 K24
19 20
7 XOUT KI3
14

4.00MHz 8 XIN 13 K2 K14 K16 K28

KI2
J2
21 22 23 24
C1 X1
R1 9 GND 12
1Ω KI1
47µF 25 26 27 28
10 S2 KI0
11
30 31
29

YAMAHA RAX17 IR CODE TABLE

code
ID1 (ZONE2) ID2 (ZONE2) (default)
Key
Key Name XM XM
No.
ID1+CD ID1+XM With pressing Key No. 29 ID2+CD ID2+XM With pressing Key No. 29
1 (no key) (no code) (no code) (no code) (no code)
2 POWER 7E-BA (no code) 7D-64 (no code)
3 CD 7A-D1 1 7A-61 7D-67 1 7D-A1
4 PHONO 7A-D0 2 7A-62 7D-65 2 7D-A2
5 TUNER 7A-D2 3 7A-63 7D-66 3 7D-A3
6 STANDBY 7E-BB (no code) 7D-63 (no code)
7 MD/TAPE 7A-D3 4 7A-64 7D-6A 4 7D-A4
8 VCR 7A-D6 5 7A-65 7D-6D 5 7D-A5
9 DTV/CBL 7A-D9 6 7A-66 7D-6C 6 7D-A6
10 ENT (no code) ENT 7A-BF (no code) ENT 7D-3F
11 DVD 7A-CD 7 7A-67 7D-6F 7 7D-A7
12 XM 7A-D8 8 7A-68 7D-2F 8 7D-A8
13 9 (no code) 9 7A-69 (no code) 9 7D-A9
14 0 (no code) 0 7A-60 (no code) 0 7D-A0
15 PRESET (+) 7A-10 (no code) 7D-F5 (no code)
16 VOLUME (+) 7A-DA (no code) 7D-70 (no code)
17 PRESET (-) 7A-11 (no code) 7D-F6 (no code)
18 VOLUME (-) 7A-DB (no code) 7D-71 (no code)
19 A/B/C/D/E 7A-12 (no code) 7D-F7 (no code)
20 MUTE 7A-DC (no code) 7D-72 (no code)
21 Device REW 7A-0D A-E/CAT (-) 7A-6D (no code) REW 7A-0D A-E/CAT (-) 7D-35 (no code)
22 Device PAUSE 7A-09 PRESET/CH (+) 7A-6A (no code) PAUSE 7A-09 PRESET/CH (+) 7D-31 (no code)
23 Device FF 7A-0C A-E/CAT (+) 7A-6C (no code) FF 7A-0C A-E/CAT (+) 7D-33 (no code)
24 Device DISPLAY 79-0A DISPLAY 7A-72 (no code) DISPLAY 79-0A DISPLAY 7D-39 (no code)
25 Device SKIP (-) 7A-0B ALL 7A-B5 (no code) SKIP (-) 7A-0B ALL 7D-2C (no code)
26 Device STOP 7A-09 PRESET/CH (-) 7A-6B (no code) STOP 7A-09 PRESET/CH (-) 7D-32 (no code)
27 Device SKIP (+) 7A-0A PRESET 7A-B7 (no code) SKIP (+) 7A-0A PRESET 7D-2E (no code)
28 Device DISK SKIP 7A-4F CAT 7A-B6 (no code) DISK SKIP 7A-4F CAT 7D-2D (no code)
29 Device PLAY 7A-08 NUMBER (no code) (no code) PLAY 7A-08 NUMBER (no code) (no code)
30 ID1/ID2
31 CD/XM
DPX-1200
RX-797

45
 RX-797

REMOTE CONTROL RAX18

■ SCHEMATIC DIAGRAM KEY NO. LAYOUT

K7 K9 K8 K11
+3V
2
SW2
K25 K26
ZONE3
3 4 5 6
ZONE2
D1 7 8 9
SW1 1 KI/O6 KI/O5 20
K15 K16 K19 K17
ID2
2 19 11
KI/O7 KI/O4
ID1 3 S0 KI/O3 18 K21 K23 K22 K24

U1 µPD67AMC–311
15 16
Q1
4 S1/LED KI/O2 17
R2
47Ω 5 REM 16 K29 K27 K28 17 18
KI/O1

6 VDD 15
KI/O0
K20 K18 K2 19 20
7 XOUT KI3
14

4.00MHz
21 22 23 24
8 XIN KI2
13 K6 K4 K3 K5
C1 X1 J3
R1 9 GND KI1 12
25 26 27 28
1Ω 47µF
10 S2 KI0
11 30 31
29

YAMAHA RAX18 IR CODE TABLE

code
Key ID1 (ZONE2) ID1 (ZONE2) (default)
Key Name
No.
CD TAPE CD TAPE
1 (no key) (no code) (no code)
2 POWER 7E-BA 7D-64
3 CD 7A-D1 7D-67
4 PHONO 7A-D0 7D-65
5 TUNER 7A-D2 7D-66
6 STANDBY 7E-BB 7D-63
7 MD/TAPE 7A-D3 7D-6A
8 VCR 7A-D6 7D-6D
9 DTV/CBL 7A-D9 7D-6C
10 (no key) (no code) (no code)
11 DVD 7A-CD 7D-6F
12 (no key) (no code) (no code)
13 (no key) (no code) (no code)
14 (no key) (no code) (no code)
15 PRESET (+) 7A-10 7D-F5
16 VOLUME (+) 7A-DA 7D-70
17 PRESET (-) 7A-11 7D-F6
18 VOLUME (-) 7A-DB 7D-71
19 A/B/C/D/E 7A-12 7D-F7
20 MUTE 7A-DC 7D-72
21 Device REW 7A-0D REW 7A-01 REW 7A-0D REW 7A-01
22 Device PAUSE 7A-09 A/B 7A-06 PAUSE 7A-09 A/B 7A-06
23 Device FF 7A-0C FF 7A-02 FF 7A-0C FF 7A-02
24 Device DISPLAY 79-0A (no code) DISPLAY 79-0A (no code)
25 Device SKIP (-) 7A-0B DIR A 7A-07 SKIP (-) 7A-0B DIR A 7A-07
RX-797

26 Device STOP 7A-09 STOP 7A-03 STOP 7A-09 STOP 7A-03

27 Device SKIP (+) 7A-0A DIR B 7A-40 SKIP (+) 7A-0A DIR B 7A-40
28 Device DISC SKIP 7A-4F REC 7A-04 DISC SKIP 7A-4F REC 7A-04
29 Device PLAY 7A-08 PLAY 7A-00 PLAY 7A-08 PLAY 7A-00
30 ID1/ID2
31 CD/TAPE

46