Onkyo TX-DS797 User manual

TX-DS797
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
SERVICE MANUAL
AV RECEIVER
Black, Golden and Silver models
MODEL TX-DS797
Ref. No. 3714
102001
BMDD
BMPP,SMPP,BMPA,GMPA
BMWT,GMWT,GMWR
GMGT
120V AC, 60Hz
230-240V AC, 50Hz
120/220-230V AC, 50/60Hz
220-230V AC, 50Hz
STANDBY/ON
OFF
ON
POWER
STANDBY
PHONES
MASTER VOLUME
FM AM PHONO C DTAPE
VIDEO 4VIDEO 5VIDEO 3VIDEO 2VIDEO 1
DVD
OFFZONE 2REC OUTDISPLAY DIMMER
UPSAMPLING
AUDIO
SELECTOR
ZONE 2 ()
GRN
REC ()
RED
S VIDEO AUDIO
VIDEO L R
DIGITAL
VCR 2VCR 1
VIDEO 5/VIDEO CAM INPUT
AV RECEIVER TX-DS797
CLEAR
DSP A-FO RM LISTENING MODE MEMORY THXSURROUNDDIRECT STEREO MEMORYFM MODE
ENTER
RE TURN
SETUP
TUNI NG
PRESET

TX-DS797
SPECIFICATIONS
100 watts per channel min. RMS at
8 ohms, 2 channels driven from 20
Hz to 20 kHz with no more than
0.08% total harmonic distortion.
130 watts min. RMS at 6 ohms, 2
channels driven from 1 kHz with
no more than 0.1% total harmonic
distortion.
135 watts at 6 ohms
160 watts at 6 ohms
2 x250 watts at 3 ohms
2 x210 watts at 4 ohms
2 x130 watts at 8 ohms
0.08% at rated power
0.08% at 1 Watt output
0.08% at rated power
0.08% at 1 Watt output
60 at 8 ohms
2.5 mV, 50 kohms
200 mV, 50 kohms
200 mV, 50 kohms
36 mV, 50 kohms
0.5 Vp-p, 75 ohms
1 Vp-p, 75 ohms
1 Vp-p, 75 ohms (Y)
0.28 Vp-p, 75 ohms (C)
1 Vp-p, 75 ohms (Y)
0.7 Vp-p, 75 ohms (PB,PR)
200 mV, 470 ohms
1 V, 470 ohms
100mV, 470 ohms
1 Vp-p, 75 ohms
1 Vp-p, 75 ohms (Y)
0.28 p-p, 75 ohms (C)
1 Vp-p, 75 ohms (Y)
0.7 Vp-p, 75 ohms (PB,PR)
120 mV RMS at 1 kHz, 0.5% T.H.D.
10 Hz to 100 kHz : +1/-3 dB
(CD in Direct mode)
20 Hz to 20 kHz :0.8 dB
10 dB at 50 Hz
10 dB at 20,000 Hz
80 dB (IHF A, 5 mV input)
AMPLIFIER SECTION
Continuous Average Power output (FTC)
All channels:
Continuous Power output (DIN)
Maximum Power output (EIAJ)
Dynamic Power Output (Stereo)
Total Harmonic Distortion:
IM Distortion:
Damping Factor:
Input Sensitivity and Impedance
PHONO:
LINE (CD, TAPE, DVD,
VIDEO 1-5):
MULTICHANNEL INPUT
(FRONT L/C/R, SURROUND
L/R, SURROUND BACK L/R):
(SUBWOOFER):
COAXIAL 1, 2, 3 (DIGITAL):
DVD, VIDEO 1, 2, 3, 4, 5:
COMPONENT VIDEO 1, 2:
Output Level and Impedance
Rec out (TAPE, VIDEO 1, 2):
Pre out:
ZONE 2 OUT:
VIDEO (VIDEO 1, 2, MONITOR
OUT, ZONE 2 OUT):
COMPONENT VIDEO OUT:
Phono Overload:
Frequency Response:
RIAA Deviation:
Tone Control
Bass:
Treble:
Signal-to-Noise Ratio (Stereo)
Phono:
CD/Tape: 110 dB (IHF A, 0.5 V input)
TUNER SECTION
FM
Tuning Range: 87.5—108.0 MHz (50 kHz steps)
Usable Sensitivity
Mono: 11.2 dBf, 1.0uV (75 ohms IHF)
0.9uV (75 ohms DIN)
Stereo: 17.2 dBf, 2.0uV (75 ohms IHF)
23uV (75 ohms DIN)
50 dB Quieting Sensitivity
Mono: 17.2 dBf, 2.0uV (75 ohms)
Stereo: 37.2 dBf, 20uV (75 ohms)
Capture Ratio: 2.0 dB
Image Rejection Ratio
USA & Canadian models: 40 dB
Other area models: 85 dB
IF Rejection Ratio: 90 dB
Signal-to-Noise Ratio
Mono: 76 dB
Stereo: 70 dB
Alternate Channel Attenuation: 55 dB
Selectivity: 50 dB (DIN)
AM Suppression Ratio: 50 dB
Total Harmonic Distortion
Mono: 0.2%
Stereo: 0.3%
Frequency Response: 30 Hz—15 kHz,1.0 dB
Stereo Separation: 45 dB at 1 kHz
30 dB at 100 Hz—10 kHz
AM
Tuning Range
USA & Canadian models: 530 to 1,710 kHz (10-kHz steps)
European & Australian models: 522 to 1,611 kHz (9-kHz steps)
Worldwide models: 531 to 1,602 kHz (9-kHz steps)
530 to 1,710 kHz (10-kHz steps)
Usable Sensitivity: 30 uV
Image Rejection Ratio: 40 dB
IF Rejection Ratio: 40 dB
Signal-to-Noise Ratio: 40 dB
Total Harmonic Distortion: 0.7%
GENERAL
Power Supply
USA & Canadian models: AC 120 V, 60 Hz
European & Australian models: AC 230-240 V, 50 Hz
Some Asian models: AC 220-230 V, 50/60 Hz
Worldwide models: AC 220-230 and 120 V switchable,
50/60 Hz
Power Consumption
USA & Canadian models: 6.8 A
Other models: 550 W
Dimensions (Wx HxD): 435x175x459 mm
17-1/8"x6-7/8"x18-1/16"
Weight
USA & Canadian models: 35.9 lbs.
Other models: 17.3 kg
REMOTE CONTROLLER
Transmitter: Infrared
Signal range: Approx. 16 ft., 5 meters
Power supply: Two “AA”batteries (1.5 Vx 2)
Specifications and features are subject to change without notice.

TX-DS797
SERVICE PROCEDURES
1. Replacing the fuses
This symbol located near the fuses indicates that the
fuse used is fast operating type. For continued protection against
fire hazard, replace with same type fuse. For fuse rating refer to
the marking adjacent to the symbol.
Ce symbole indique que le fusible utlise est a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce darnier est la qu le present symbol est
appse.
CIRCUIT NO. PART NO. DESCRIPTION
F901 252199
F902 252077,
252243 or
252277
F903 252075,
252241 or
252275
F9501,F9502 252160 or
252254
252075,
252241 or
252275
F9503,F9504 252158 or
252252
252073 or
252239
10A-UL/T-314,Fuse <D/WT/GT>
4A-SE-EAK,
4A-SE-TL250V or
4A-SE-TL250V,Fuse <P/WT/R/A/GT>
2.5A-SE-EAK,
2.5A-SE-TL250V or
2.5A-SE-TL250V,Fuse <P/WT/R/A/GT>
2.5A-UL/T-237 or
2.5A-T/UL-ST2,Fuse <D>
2.5A-SE-EAK,
2.5A-SE-TL250V or
2.5A-SE-TL250V,Fuse <P/WT/R/A/GT>
1.6A-UL/T-237 or
1.6A-T/UL-ST2,Fuse <D>
1.6A-SE-EAK or
1.6A-SE-TL250V,Fuse <P/WT/R/A/GT>
Note: <D>:120V model only
<P>: European model only
<WT>: Worldwide model only
<R>: Asian model only for 230V
<GT>: 220V model only
<A>: Australian model only
2. To initialize the unit
This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical source results in
accident which causes the specified operations and functions to
operate abnormally.
To perform a result, please follow the procedure below.
1.Press and hold down the VIDEO 1 button, then press the
STANDBY/ON button.
2.After "clear" is displayed, the preset memory and each
mode stored in the memory, such as surround, are
initialized and will return to the factory setting.
3. Safety-check out
(Only U.S.A. model)
After correcting the original service problem, perform the
following safety check before releasing the set to the customer.
Connect the insulating-resistance tester between the plug of power
supply cord and screw on the back panel.
Specifications: 3.3Mohm±10% at 500V.
4. Memory Preservation
This unit does not require memory preservation batteries. A
built-in memory power back-up system preserv es the contents
of the memory during po wer f ailures and even when the unit is
unplugged. The unit must be plugged in order to char ge the
back-up system.
The memory preserv ation period after the unit has been
unplugged varies depending on climate and placement of the
unit. On the average, memory contents are protected over a
period of a fe w weeks after the last time the unit has been
unplugged. This period is shorter when the unit is exposed to a
highly humid climate.
Worldwide models are equipped with a v oltage selector to conform with
local power supplies. Be sure to set this switch to match the voltage of
the power supply in your area before plugging in the unit.
1. Determine the proper voltage for your area: 220-230 V or
120 V.
2. If the preset v oltage is not correct for your area, insert a screw-
driver into the groo ve in the switch. Slide the switch all the w a y
to the right (120 V) or to the left (220-230 V), which ever is
appropriate.
5.Setting the Voltage selector (Worldwide models
onl y)
A
1
2
3
4
5
B C D E F G H

TX-DS797
WIRINGVIEW 1
TX-DS797
U1
U47
U31
U23
U21
U38
U48
U36
U37
U45
U33
U12
U39
U32
U44
U35
U46
U51
P6101A
P4610C
P4610B
JL6933A
P7201B
P3010B
P3011B
P1010A
P3220A
P3210B
P3211B
P2007B
P2005B
P2006B
P2507B
P2505B P2506A
P2705B
P2704B
P6830B
P6832B
P2901B
JL931A
P4020B P4010B P4011B P4012A
P5004E
P5003E
P7704B P7705B
P7703B
P7701A
P102A
P811B
P7702
P2901A
P2805A
P2705A P2006A
P2005A
P2905A
P2505A P3010A
P3011A
P7704A
P7705A
P7703A
P811A
P3210A
P3211A
P4020A
P4010A
P4011A
P4012A
P9502
P2906
P7701B
P6931
P9503A
P6401
P5004A
P5004B
P5004C
P5004D
P5003A
P5003B
P5003C
P6101
Front end
CN1
NAAF-7262
Preamplifier circuit PC board
4-1,4-2
NADG-7226
Main circuit PC board
NADG-7228
Front video 2 PC board
NAPS-7252
Power supply circuit
PC board
NAAF-7250
Power amplifier
PC board
NAETC-7238
Fan drive circuit
PC board
NASW-7331
Volume PC
board
NADIS-7330
Display circuit PC board
1-1,1-2
NAETC-7332
Headphone terminal
PC board
NAVD-7270
Component video
terminal PC board
NAETC-7278
Front video PC
board
NAVD-7269
S video circuit
PC board
NAVD-7268
Composite video
circuit PC board
NAAF-7263
Audio terminal PC
board
NAAF-7264
Video terminal PC
board
NAETC-7272 RI
terminal PC board NAAR-7267
Connector PC board
1-1
1-2
2-1~2-4
3-2
3-1
9-2
9-3
8-1
1-2
9-1
8-2
6-1,6-2
7-3
7-3
1-2
P7203
P7201A
P7482A
P7559A
GND
TXD1 RTS1
VDD
CLK1 RXD1
CNVSS
RESET
S7569
P7559B
P7481
P7482B
U2501
P102B
9-2 shows the number of schematic diagram.
A
1
2
3
4
BCDE

TX-DS797
WIRINGVIEW 2
TX-DS797
JL6933B
JL6933A
P3220A
P3210B
P3211B
P6830B
P6832B
P2901B
JL931A
P7701B P6931
P9503A
P6401
P5004A P5004B P5004C P5004D
P5003A P5003B P5003C
P6101
P6013 P6014 P6015 P6016P6003 P6004 P6006
P6010 P6011 P6012P6000 P6001 P6002
P6810A P6810B P6810C
P6008
P6812A P6812B P6812C P6812D
P6952
P6931A
P6009
P5210A
P5100A P5101A
P6082P6081P6080
P6083 P6084 P6085 P6086
P6013A
P6014A
P6015A
P6016A
P6003A
P6004A
P6005A
P6006A
P6010A
P6011A
P6012A
P6000A
P6001A
P6002A
P6952A P9505A
P6951
JL6953B
P9501
JL6953A JL9504A
P9502A
P9503
P6812E P6008B
P6832
P6008AP6810D
P6830
P917
P918
P916
P915
P901A
P911
JL931B
P917A
P918A
JL9504B
P5003EP5004E
P6101A
T901
POWER
TRANS-
FORMER
FAN
NAETC-7258
Thermal detector
circuit PC board NAAR-7267
Connector PC board
NAPS-7252
Power supply circuit PC board
NAETC-7237
Speaker terminal
SR/SB PC board NAAF-7250,Power amplifier driver PC board
NAETC-7238
Fan drive circuit
PC board
NAETC-7239
Thermal detector
circuit PC board NAETC-7272
RI terminal
PC board
NAETC-7236
Speaker terminal
F/C PC board
NAETC-7242
AC inlet terminal PC
board
NAPS-7233
Primary circuit PC
board
NASW-7235
Power switch PC board
NAAF-7232
Power
amplifier
driver
circuit PC
board 1
NAAF-7262
NAAF-7264
Video terminal
PC board
NAAF-7251
Power amplifier
driver PC
board 2
NAETC-7227
Front video PC board
NAVD-7269
S video circuit PC
board
Preamplifier
circuit PC
board
Rectifier circuit
PC board
NAPS-7234
U39
U7
U21
U47
U23
U8
U29 U35
U22
U16
U10
U12
U13
U9
U11
U37
U33
U6
U31
7-3
7-3
7-1
7-3
7-3 9-3
7-2
6-1,6-2
9-2 7-1
7-2
7-2
5-2
4-1,4-2
3-1
1-2
8-1
5-1
P2506B
P3220B
P2508
P2510
9-2 shows the number of schematic diagram.
A
1
2
3
4
BCDE

TX-DS797
BLOCK DIAGRAM
A
1
2
3
4
5
B C D E F G H
SURROUND SPEAKERS
LEFT
RIGHT
BACK
MULTICHANNEL INPUT
LRCSWSLSRSBLSBR
FRONT SPEAKERS
RIGHT
LEFT
CENTER
COMP
REC/Z2
COMP
INP
C
REC/Z2
C
INP
Y
REC/Z2
RIGHT
REC/Z2
AC OUTLET
FUSE
FUSE
YC
VIDEO 1
YC
S-VIDEO OUTPUT
MONITOR
YC
VIDEO 2
YC
VIDEO 5
(FRONT)
YC
S-VIDEO INPUT
DVD
YC
VIDEO 1
YC
VIDEO 2
YC
VIDEO 3
YC
VIDEO 4
RIGHT
PREOUT
LEFT
SURROUND
LEFT
SURROUND
RIGHT
SURROUND
BACK
/ ZONE 2 LEFT
SURROUND
BACK
/ ZONE 2 RIGHT
CENTER
SUBWOOFER
COOLING FAN
MUTE
12V
TRIGGER
CONTROL
IR
DE-
MODULATOR
12V TRIGGER
+B3
RELAY
+B2
RELAY
DRIVER
FLAC
FL TUBE
FLAC
MAIN AMP
+B1/-B1
-27V
-VP
-15V
AUDIO
-5V
VIDEO
+5V
VIDEO
+5V
DSP
+15V
AUDIO
ISDET
RELAY
DRIVER
VOLTAGE SENSOR
CURRENT SENSOR
THERMAL
SENSOR
FAN
DRIVER
RI
INTERFACE
+5.6V
STANDBY
ZONE2
LINEOUT
L
R
L VIDEO 2
R
VIDEO 5 L
R
(FRONT)
24.576MHZ
RECOUT
L TAPE
R
L VIDEO 1
R
COMPOSITE
VIDEO OUT
MONITOR
VIDEO 1
VIDEO 2
ZONE 2
VIDEO 3 L
R
VIDEO 4 L
R
VIDEO 1 L
R
VIDEO 2 L
R
TAPE L
R
DVD L
R
AUDIO INPUT
PHONO L
R
CD L
R
COAXIAL 1
COAXIAL 2
COAXIAL 3
COMPONENT VIDEO OUITPUT
Y
CB
CR
1
Y
CB
CR
INPUT
2
Y
CB
CR
VIDEO 3
VIDEO 4
VIDEO 5
(FRONT)
COMPOSITE VIDEO INPUT
DVD
VIDEO 1
VIDEO 2
HEADPHONE
REMOTE SENSOR
IR OUT
IRIN
RI
T902
T901
AC IN
TONE
NJU7306G
NJU7306G
DIGITAL AUDIO OUTPUT
OPTICAL 1
OPTICAL 3
OPTICAL 1
OPTICAL 2
DIGITAL AUDIO INPUT
OPTICAL
VIDEO 5
(FRONT)
CS493002
POST
PROCESSING
(THX CINEMA)
(THX SURROUND EX)
CS493002
DECODING
(AC-3,DTS)
(DTS-ES)
(PLII,NEO:6)
-1
-1
BU1923
RDS
DECODER
TC9246F
2ND PLL
FM/AM
TUNER
PACK
MPD441000
SRAM
1M MIN.
MBM29LV002
FLASH ROM
2M MIN.
MBM29LV002
FLASH ROM
2M MIN.
LED
DRIVER
M66004FP
FL DRIVEROSD
LC74761
-9189
AK4356
192/24
D/A
AK4528
96/24
D/A
(2/2)
AK4528
96/24
A/D
(1/2)
AK4114
DIR
50KLPF
50KLPF
50KLPF
50KLPF
50KLPF
50KLPF
50KLPF
50KLPF
TC94A07F
TC94A07F
TC94A07F
MASTER VOLUME
TC94A07F
CUT
BOOST
TC9482F
MCL
BL
TL
DL
BR
TR
MCR
DR
Z2R
Z2L
DSBL
MCSR
MCSBL
DSW
MCSW
DC
MCC
DSBR
MCSBR
DSR
DSL
MCSL
BPLS
SW->R
BPLS
SW->L
BYPASS
BYPASS
C->L
SL->L
C->R
SR->R
BYPASS
BYPASS
TV-5
POWER SW
TV-8
ZONE2
RX0
RX1
HPEN
RX2
RX3
TX0
RX4
RX5
DAUX
RX6
BPLS
-6dB
-6dB
Zone 2 LED
Rec Out LED
TC9274N-008
TC9273F-017
European model only
15dB/30dB
TC9163
TC9164
TC9273N-004
+29dB
Power Amplifier
+29dB
11dB
11dB
RN1241 x22
PAL
NTSC
SEP
SEP
Y-C
Y-C
MIX
Y-C
RN1241 x6
FLT
Volume Control
Key Matrix0dB
6dB
6dB
+29dB
+29dB
+29dB
+29dB
6dB
6dB
6dB
6dB
74HC4051 x6
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
SUB
MICROPROCESSOR
MAIN
MICROPROCESSOR
120V model Other models

BLOCK DIAGRAM 1
S
SBR
COMP
REC/Z2
COMP
INP
C
REC/Z2
C
INP
Y
REC/Z2
RIGHT
REC/Z2
YC
VIDEO 1
YC
S-VIDEO OUTPUT
MONITOR
YC
VIDEO 2
YC
VIDEO 5
(FRONT)
YC
S-VIDEO INPUT
DVD
YC
VIDEO 1
YC
VIDEO 2
YC
VIDEO 3
YC
VIDEO 4
MUTE
ISDET
ZONE2
LINEOUT
L
R
L VIDEO 2
R
VIDEO 5 L
R
(FRONT)
24.576MHZ
RECOUT
L TAPE
R
L VIDEO 1
R
COMPOSITE
VIDEO OUT
MONITOR
VIDEO 1
VIDEO 2
ZONE 2
VIDEO 3 L
R
VIDEO 4 L
R
VIDEO 1 L
R
VIDEO 2 L
R
TAPE L
R
DVD L
R
AUDIO INPUT
PHONO L
R
CD L
R
COAXIAL 1
COAXIAL 2
COAXIAL 3
1Y
CB
CR
INPUT
2Y
CB
CR
VIDEO 3
VIDEO 4
VIDEO 5
(FRONT)
COMPOSITE VIDEO INPUT
DVD
VIDEO 1
VIDEO 2
DIGITAL AUDIO OUTPUT
OPTICAL 1
OPTICAL 3
OPTICAL 1
OPTICAL 2
DIGITAL AUDIO INPUT
OPTICAL
VIDEO 5
(FRONT)
CS493002
POST
PROCESSING
(THX CINEMA)
(THX SURROUND EX)
CS493002
DECODING
(AC-3,DTS)
(DTS-ES)
(PLII,NEO:6)
BU1923
RDS
DECODER
TC9246F
2ND PLL
FM/AM
TUNER
PACK
MPD441000
SRAM
1M MIN.
MBM29LV002
FLASH ROM
2M MIN.
MBM29LV002
FLASH ROM
2M MIN.
LED
DRIVER
M66004FP
FL DRIVER
OSD
LC74761
-9189
AK4356
192/24
D/A
AK4528
96/24
D/A
(2/2)
AK4528
96/24
A/D
(1/2)
AK4114
DIR 50KLPF
50KLPF
50KLPF
50KLPF
50KLPF
50KLPF
50KLPF
50KLPF BPLS
SW->R
BPLS
SW->L
C->L
SL->L
C->R
SR->R
RX0
RX1
RX2
RX3
TX0
RX4
RX5
DAUX
RX6
-6dB
-6dB
Zone 2 LED
Rec Out LED
TC9274N-008
TC9273F-017
European model only
TC9273N-004
RN1241 x22
PAL
NTSC
SEP
SEP
Y-C
Y-C
MIX
Y-C
RN1241 x6
FLT
Volume Control
Key Matrix0dB
6dB
6dB
6dB
6dB
6dB
6dB
74HC4051 x6
MUTE
MUTE
SUB
MICROPROCESSOR
MAIN
MICROPROCESSOR
TX-DS797
A
1
2
3
4
5
BCD

TX-DS797
SURROUND SPEAKERS
LEFT
RIGHT
BACK
MULTICHANNEL INPUT
LRCSWSLSRSBLSBR
FRONT SPEAKERS
RIGHT
LEFT
CENTER
AC OUTLET
FUSE
FUSE
RIGHT
PREOUT
LEFT
SURROUND
LEFT
SURROUND
RIGHT
SURROUND
BACK
/ ZONE 2 LEFT
SURROUND
BACK
/ ZONE 2 RIGHT
CENTER
SUBWOOFER COOLING FAN
12V
TRIGGER
CONTROL
IR
DE-
MODULATOR
12V TRIGGER
+B3
RELAY
+B2
RELAY
DRIVER
FLAC
FL TUBE
FLAC
MAIN AMP
+B1/-B1
-27V
-VP
-15V
AUDIO
-5V
VIDEO
+5V
VIDEO
+5V
DSP
+15V
AUDIO
RELAY
DRIVER
VOLTAGE SENSOR
CURRENT SENSOR
THERMAL
SENSOR
FAN
DRIVER
RI
INTERFACE
+5.6V
STANDBY
COMPONENT VIDEO OUITPUT
Y
CB
CR
HEADPHONE
REMOTE SENSOR
IR OUT
IRIN
RI T902
T901
AC IN
TONE
NJU7306G
NJU7306G
-1
-1
LED
DRIVER
F
F
F
F
TC94A07F
TC94A07F
TC94A07F
MASTER VOLUME
TC94A07F
CUT
BOOST
TC9482F
MCL
BL
TL
DL
BR
TR
MCR
DR
Z2R
Z2L
DSBL
MCSR
MCSBL
DSW
MCSW
DC
MCC
DSBR
MCSBR
DSR
DSL
MCSL
BPLS
SW->R
BPLS
SW->L
BYPASS
BYPASS
C->L
SL->L
C->R
SR->R
BYPASS
BYPASS
TV-5
POWER SW
TV-8
ZONE2
HPEN
BPLS
Zone 2 LED
Rec Out LED
15dB/30dB
TC9163
TC9164
+29dB
Power Amplifier
+29dB
11dB
11dB
+29dB
+29dB
+29dB
+29dB
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
MUTE
120V model Other models
BLOCK DIAGRAM 2
A
1
2
3
4
5
BCD

TX-DS797
MICROPROCESSOR CONNECTION VIEW
MAIN MICROPROCESSOR
A
1
2
3
4
5
BCDEFGH
Q7701
M30624MGA-358FP898
1
24 25 26 27 28 29
2
30
3 4
51 52 53
5 6
78 79
7
80
AVCC 99
AVSS 96
BYTE
8
CNVSS
9
88
87
86
85
84
83
82
AMUT1 81
97
P101/AN1 95
94
93
92
91
90
89
77
SD
76
TUMUTE
75
PLLCE
74
POWER
73
SPRLF
72 71 70 69 68 67 66 65 63 61 60 59 58 57 56 55 54
50
49
48
47
46
45
44
43
42
P55/~HOLD 41
40
39
38
37
36
35
34
33
32
31
23 22 21 20 19 18
P85/~NMI
17
P86/XCOUT
11
P87/XCIN
10
100
VCC1
16
VCC2
62
VREF 98
VSS1
14
VSS2
64
XIN
15
XOUT
13
~RESET
12
Q7702
SYSTEM
RESET
X7701
CSTCV16.0
MXJ0C
FMEM/SRAM1
MAINREQ
MAINCL
MAINSO
SUBREQ
SUBPOFF
DSPCS2
DSPRST2
DSPCS1
DSPRST1
DIRPD
DIRCS
SUBSO
SUBRES
RES1
A171
A161
A151
VCCPUP
FMEM/SRAM2
INTREQ2
A152
INTREQ1
A162
DSPCL
A172 CDTO/SCDO DFSDAC DSPDA DAPD
RY
CODECPD INT1 DFSCO INT0
POFF
SEC1H
RDSSCK
PROTCTTHM
PRO
12VTRGA 12VTRGB 12VTRGC SPRLZ2
+5V
STEREO RDSDATA
RDSSIG
FCL
VPCL
ISTB
VOLH
Z2LMUT
Z2MUT1
VPDATA
VSTB
T2STB
T1STB
TDATA
TCL
FDATA
HPMUT
IN1L
IN2L
NC
IN1R
IN2R
NC
fR11
fR10
fR9
fR8
fR7
fR6
fR5
fR4
fR3
fR2
fR1
NC
VSS
CLK
DI
VCC ~CS
NC
VEE
TEST2
TEST1
fL1
fL2
fL3
fL4
fL5
fL6
fL7
fL8
fL9
fL10
fL11
NC
VDD 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2021
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
T1STB
TDATA
TCL
Q921
POWER
RELAY SW
D925
DATA
FUNC
CL
GND
VDD
VSS
Q3300
TC9274AN-008
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
STB
CL DATA
GND
VSS VDD
Q3100
TC9273F-017
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
ISTB
FDATA
FCL
VSS
ST
GND CL
DATA
VDD
Q4101
TC9164AF
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
FDATA
FCL
FSTB
VSS
ST
GND CL
DATA
VDD
Q4100
TC9163AF
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
FDATA
FCL
FSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
IN1L
IN2L
NC
IN1R
IN2R
NC
fR11
fR10
fR9
fR8
fR7
fR6
fR5
fR4
fR3
fR2
fR1
NC
VSS
CLK
DI
VCC ~CS
NC
VEE
TEST2
TEST1
fL1
fL2
fL3
fL4
fL5
fL6
fL7
fL8
fL9
fL10
fL11
NC
VDD
Q4400
NJU7306G
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2021
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
T1STB
TDATA
TCL
+B
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
Q4200
TC94A07F
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
LEVEL
DET. of
POWER
AMP.
TUNER
PACK
Q181
RDS DECODER
BU1923F
D6600
RL6602
RL6600P6810D
LSP
RSP
CSP
Q231
SPEAKER
RELAY SW
TO SPEAKER TERMINALS
D6603
RL6605
RL6603
LSSP
RSSP
RSBSP
Q232
SPEAKER
RELAY SW
TO SPEAKER TERMINALS
LSBSP
RL901
Q2910,11
12V
TRIGGER
CONTROL
Q223,224
12V
TRIGGER
CONTROL
Q221,222
12V
TRIGGER
CONTROL
To BUS
TERMINALS
12V
TRIGGER
A
12V
TRIGGER
B
PROTECTION
CIRCUIT DET.
FOR DC/CURRENT
POWER
FAILURE
DETECTION
THERMAL
DETECTION
CIRCUIT
Q712
RAM
Q702
RAM
Q701
DECORDING
(AC-3,DTS,DTS
ES,PLII,NEO6)
CS493002
Q711
POST PROCESSING
(THX CINEMA,
THX SURROUND EX)
CS493002
Q801
DA CONVERTER
AK4536VQ
Q103
AD/DA CONVERTER
AK4528VF
Q7201
SUBMICROPROCESSOR
Q104
DIR
AK4114
+B
+B
+B
18
19
8
21
40
1
2
22
12
12
40
1
2
22
18
36
7
6
19
20
18
36
7
6
19
20
31
35
32
19
26
37
36
80
37
35
36
38
79
12
Q3400
ZONE 2 AMP.
MUTE
SW
Q4203
TC94A07F
Q4201 TC94A07F
Q4202
TC94A07F
FRONT CH.
VOLUME SURROUND CH.
VOLUME
C/SW CH.
VOLUME SB CH.
VOLUME
Q4401
NJU7306G
FRONT CH.
TONE C/SW CH.
TONE
Q4800
HP AMP.
HP
MUTE
SW
To HP
JACKS
Q4410 FRONT
PRE AMP.
MUTE
SW
To PREOUT
Q4411 CENTER
PRE AMP.
MUTE
SW
To PREOUT
Q4421 SW
PRE AMP.
MUTE
SW
To PREOUT
Q4212 SUR
PRE AMP.
MUTE
SW
To PREOUT
Q4213 SB
PRE AMP
PRE
OUT
Q6901
BIAS SEL
RELAY SW
RL6901,2
BIAS VOLTAGE
SELECTOR
RELAYS
To
MAIN
POWER
TRANS.
SURROUND MODE
SELECTOR SW
SOURCE
SELECTOR SW
SOURCE
SELECTOR SW

TX-DS797
MAIN MICROPROCESSOR
Terminal Descriptions
TX-DS797
No. Function I/O Act. Description No. Function I/O Act. Description
8 BYTE I Input pin to change the width of external data bus. Connect to Vss. 52 ADR152 O H Signal output pin to control address 15 of flash memory for second DSP.
9 CNVSS I Input pin to change the processor mode. Connect to Vss. 53 ADR162 O H Signal output pin to control address 16 of flash memory for second DSP.
12 ~RESET I Reset pin of microprocessor 54 ADR172 O H Signal output pin to control address 17 of flash memory for second DSP.
13 XOUT O Output pin of main clock oscillator 55 DFSDAC O H DAC sampling control output pin.
14 VSS I Ground pin 56 ~DARST O L Reset output pin for six channels DAC.
15 XIN I Input pin of main clock oscillator 57 ~CODECPD O L Reset output pin for CODEC IC.
16 VCC I Power supply pin. Apply 5V. 58 DFSCO O H Sampling frequency control output pin for CODEC IC.
18 PRTCTV I H Abnormal voltage/current detection input pin from protection circuit 62 VCC I Power supply pin. Apply 5V.
19 RDSSCK I CLK Modulator clock signal input pin from RDS decoder IC. 64 VSS I Power supply pin. Connect to ground,
20 ~POFF I L Input pin from detection circuit of power failure 68 TRG12A O H Output pin A to control the 12V trigger circuit.
21 ~PRTCTTHM I L Input pin from thermal detector circuit. 69 TRG12B O H Output pin B to control the 12V trigger circuit.
22 SEC1H O H Output terminal to change voltage of main amplifier. 70 TRG12Z O H Output pin to control the 12V trigger circuit of zone 2.
23 INT0 I H Input terminal from interrupter output of DIR IC. 71 SPRLZ2 O H Output pin to control the speaker relay of zone 2.
24 INT1 I H Output terminal to interrupter input of DIR IC. 72 SLRLF O H Output pin to control the speaker relay.
25 (DSPWRITE) I L Input port for check when DSP flash write. 73 POWER O H Output pin to control the relay of power source.
26 DIGSO O H Serial data output pin to DSP,DIR,DAC, nd Digital input ICs. 74 PLLCE O H Latch data output pin to PLL IC.
27 DIGSI I H Serial data input pin from DSP, and DIR ICs. 75 TUMUT O H Muting control output pin for tuner block.
28 DIGSCK O CLK Serial clock output pin to DSP,DIR,DAC,Digital input ICs. 76 ~SD I L Signal detection input pin from tuner section.
29 ~INTRQ1 I L INTRQ input pin from DSP IC 2(CS49329) 77 ~STEREO I L Stereo broadcast detection input pin.
30 ~INTRQ2 I L INTRQ input pin from DSP IC 1(CS49300) 78 RDSDATA I H Data input pin from RDS demodulator IC.
32 ~SUBRESET O L Reset signal output pin to sub-microprocessor. 79 RDSSIG I H Check signal input pin of RDS demodulator IC.
33 ~SUBPOFF O L Output pin to connect to pin POFF of sub-microprocessor. 81 AMUT O H Muting control output pin for audio circuit.
34 ~SUBREQ I L Communication request input pin from sub-microprocessor. 82 Z2LMUT O H Muting control output pin for line of zone 2.
35 MAINSO O H Serial data output pin to sub-microprocessor. 83 Z2MUT O H Muting control output pin for zone 2.
36 MAINSI I H Serial data input pin from sub-microprocessor. 84 VPCLK O H Serial clock output pin to electrical volume and PLL IC,
37 MAINSCK O CLK Serial clock output pin for communication of main and sub-microprocessors. 85 VPDATA O H Serial data output pin to electrical volume and PLL IC,
38 ~MAINREQ O L Communication request output pin of main microprocessor. 86 VSTB O H Strobe output pin to electrical volume IC.
39 ~DIRCS O L Chip select output pin of DIR IC, 87 TCS2 O L Chip select output pin to tone control IC of surround and center channels.
40 ~DIRRST O L Reset signal output pin to DIR IC, 88 TCS1 O L Chip select output pin to tone control IC of front channel..
41 Writing port of flash memory IC. 89 TDATA O H Serial data output pin to tone control IC.
42 ~DSPRST1 O L Reset signal output pin to DSP IC 2. 90 TCLK O CLK Serial clock output pin to tone control IC.
43 ~DSPCS1 O L Chip select output pin to DSP IC 1. 91 FSTB O H Strobe output pin to function switch ICs.
44 FMEM/SRAM1 O H Memory select output pin to RAM. 92 FDATA O H Serial data output pin to function switch ICs.
45 ADR151 OHSi
g
nal output pin to control address 15 of flash memory for first DSP. 93 FCL
K
OCL
K
Serial clock output pin to function switch ICs.
46 Port to write the flash memory IC. 94 HPMUT O H Muting control output pin for headphone circuit.
47 ADR161 O H Signal output pin to control address 16 of flash memory for first DSP. 96 VSS I Power supply pin for A/D converter. Connect to ground.
48 ADR171 O H Signal output pin to control address 17 of flash memory for first DSP. 97 VOLH I H Measurement input pin of main amplifier output.
49 ~DSPRST2 O ＬReset output pin to DSP IC 2. 98 VREF I Reference voltage input pin for A/D converter.
50 ~DSPCS2 O L Chip select output pin to DSP IC 2. 99 VCC I Power supply pin for A/D converter. Apply 5V.
51 FMEM/SRAM2 O H 2nd DSP memory select output pin.L=FLASH,H=SRAM

TX-DS797
MAIN MICROPROCESSOR CONNECTION DIAGRAM 1
Q7701
M30624MGA-358FP898
1
24 25 26 27 28 29
2
30
3 4
51 52 53
5 6
78 79
7
80
AVCC 99
AVSS 96
BYTE
8
CNVSS
9
88
87
86
85
84
83
82
AMUT1 81
97
P101/AN1 95
94
93
92
91
90
89
77
SD
76
TUMUTE
75
PLLCE
74
POWER
73
SPRLF
72 71 70 69 68 67 66 65 63 61 60 59 58 57 56 55 54
50
49
48
47
46
45
44
43
42
P55/~HOLD 41
40
39
38
37
36
35
34
33
32
31
23 22 21 20 19 18
P85/~NMI
17
P86/XCOUT
11
P87/XCIN
10
100
VCC1
16
VCC2
62
VREF 98
VSS1
14
VSS2
64
XIN
15
XOUT
13
~RESET
12
Q7702
SYSTEM
RESET
X7701
CSTCV16.0
MXJ0C
FMEM/SRAM1
MAINREQ
MAINCL
MAINSO
SUBREQ
SUBPOFF
DSPCS2
DSPRST2
DSPCS1
DSPRST1
DIRPD
DIRCS
SUBSO
SUBRES
RES1
A171
A161
A151
VCCPUP
FMEM/SRAM2
INTREQ2
A152
INTREQ1
A162
DSPCL
A172 CDTO/SCDO DFSDAC DSPDA DAPD
RY
CODECPD INT1 DFSCO INT0
POFF
SEC1H
RDSSCK
PROTCTTHM
PRO
12VTRGA 12VTRGB 12VTRGC SPRLZ2
+5V
STEREO RDSDATA
RDSSIG
FCL
VPCL
ISTB
VOLH
Z2LMUT
Z2MUT1
VPDATA
VSTB
T2STB
T1STB
TDATA
TCL
FDATA
HPMUT
IN1L
IN2L
NC
IN1R
IN2R
NC
fR11
fR10
fR9
fR8
fR7
fR6
fR5
fR4
fR3
fR2
fR1
NC
VSS
CLK
DI
VCC ~CS
NC
VEE
TEST2
TEST1
fL1
fL2
fL3
fL4
fL5
fL6
fL7
fL8
fL9
fL10
fL11
NC
VDD 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2021
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
T1STB
TDATA
TCL
Q921
POWER
RELAY SW
D925
DATA
FUNC
CL
GND
VDD
VSS
Q3300
TC9274AN-008
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
STB
CL DATA
GND
VSS VDD
Q3100
TC9273F-017
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
ISTB
FDATA
FCL
VSS
ST
GND CL
DATA
VDD
Q4101
TC9164AF
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
FDATA
FCL
FSTB
VSS
ST
GND CL
DATA
VDD
Q4100
TC9163AF
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
FDATA
FCL
FSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
IN1L
IN2L
NC
IN1R
IN2R
NC
fR11
fR10
fR9
fR8
fR7
fR6
fR5
fR4
fR3
fR2
fR1
NC
VSS
CLK
DI
VCC ~CS
NC
VEE
TEST2
TEST1
fL1
fL2
fL3
fL4
fL5
fL6
fL7
fL8
fL9
fL10
fL11
NC
VDD
Q4400
NJU7306G
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2021
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
T1STB
TDATA
TCL
+B
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
Q4200
TC94A07F
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
LEVEL
DET. of
POWER
AMP.
TUNER
PACK
Q181
RDS DECODER
BU1923F
D6600
RL6602
RL6600P6810D
LSP
RSP
CSP
Q231
SPEAKER
RELAY SW
TO SPEAKER TERMINALS
D6603
RL6605
RL6603
LSSP
RSSP
RSBSP
Q232
SPEAKER
RELAY SW
TO SPEAKER TERMINALS
LSBSP
RL901
Q2910,11
12V
TRIGGER
CONTROL
Q223,224
12V
TRIGGER
CONTROL
Q221,222
12V
TRIGGER
CONTROL
To BUS
TERMINALS
12V
TRIGGER
A
12V
TRIGGER
B
PROTECTION
CIRCUIT DET.
FOR DC/CURRENT
POWER
FAILURE
DETECTION
THERMAL
DETECTION
CIRCUIT
Q712
RAM
Q702
RAM
Q701
DECORDING
(AC-3,DTS,DTS
ES,PLII,NEO6)
CS493002
Q711
POST PROCESSING
(THX CINEMA,
THX SURROUND EX)
CS493002
Q801
DA CONVERTER
AK4536VQ
Q103
AD/DA CONVERTER
AK4528VF
Q7201
SUBMICROPROCESSOR
Q104
DIR
AK4114
+B
+B
+B
18
19
8
21
40
1
2
22
12
12
40
1
2
22
18
36
7
6
19
20
18
36
7
6
19
20
31
35
32
19
26
37
36
80
37
35
36
38
79
12
Q3400
ZONE 2 AMP.
MUTE
SW
Q4203
TC94A07F
Q4201
TC94A07F
Q4202
TC94A07F
FRONT CH.
VOLUME
SURROUND CH.
VOLUME
C/SW CH.
VOLUME SB CH.
VOLUME
Q4401
NJU7306G
FRONT CH.
TONE C/SW CH.
TONE
Q4800
HP AMP.
HP
MUTE
SW
To HP
JACKS
Q4410 FRONT
PRE AMP.
MUTE
SW
To PREOUT
Q4411 CENTER
PRE AMP.
MUTE
SW
To PREOUT
Q4421 SW
PRE AMP.
MUTE
SW
To PREOUT
Q4212 SUR
PRE AMP.
MUTE
SW
To PREOUT
Q4213 SB
PRE AMP
PRE
OUT
Q6901
BIAS SEL
RELAY SW
RL6901,2
BIAS VOLTAGE
SELECTOR
RELAYS
To
MAIN
POWER
TRANS.
SURROUND MODE
SELECTOR SW
SOURCE
SELECTOR SW
SOURCE
SELECTOR SW
A
1
2
3
4
5
B C D E F G H

TX-DS797
MAIN MICROPROCESSOR CONNECTION DIAGRAM 2
Q7701
M30624MGA-358FP898
1
24 25 26 27 28 29
2
30
3 4
51 52 53
5 6
78 79
7
80
AVCC 99
AVSS 96
BYTE
8
CNVSS
9
88
87
86
85
84
83
82
AMUT1 81
97
P101/AN1 95
94
93
92
91
90
89
77
SD
76
TUMUTE
75
PLLCE
74
POWER
73
SPRLF
72 71 70 69 68 67 66 65 63 61 60 59 58 57 56 55 54
50
49
48
47
46
45
44
43
42
P55/~HOLD 41
40
39
38
37
36
35
34
33
32
31
23 22 21 20 19 18
P85/~NMI
17
P86/XCOUT
11
P87/XCIN
10
100
VCC1
16
VCC2
62
VREF 98
VSS1
14
VSS2
64
XIN
15
XOUT
13
~RESET
12
Q7702
SYSTEM
RESET
X7701
CSTCV16.0
MXJ0C
FMEM/SRAM1
MAINREQ
MAINCL
MAINSO
SUBREQ
SUBPOFF
DSPCS2
DSPRST2
DSPCS1
DSPRST1
DIRPD
DIRCS
SUBSO
SUBRES
RES1
A171
A161
A151
VCCPUP
FMEM/SRAM2
INTREQ2
A152
INTREQ1
A162
DSPCL
A172 CDTO/SCDO DFSDAC DSPDA DAPD
RY
CODECPD INT1 DFSCO INT0
POFF
SEC1H
RDSSCK
PROTCTTHM
PRO
12VTRGA 12VTRGB 12VTRGC SPRLZ2
+5V
STEREO RDSDATA
RDSSIG
FCL
VPCL
ISTB
VOLH
Z2LMUT
Z2MUT1
VPDATA
VSTB
T2STB
T1STB
TDATA
TCL
FDATA
HPMUT
IN1L
IN2L
NC
IN1R
IN2R
NC
fR11
fR10
fR9
fR8
fR7
fR6
fR5
fR4
fR3
fR2
fR1
NC
VSS
CLK
DI
VCC ~CS
NC
VEE
TEST2
TEST1
fL1
fL2
fL3
fL4
fL5
fL6
fL7
fL8
fL9
fL10
fL11
NC
VDD 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2021
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
T1STB
TDATA
TCL
Q921
POWER
RELAY SW
D925
DATA
FUNC
CL
GND
VDD
VSS
Q3300
TC9274AN-008
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
STB
CL DATA
GND
VSS VDD
Q3100
TC9273F-017
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
ISTB
FDATA
FCL
VSS
ST
GND CL
DATA
VDD
Q4101
TC9164AF
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
FDATA
FCL
FSTB
VSS
ST
GND CL
DATA
VDD
Q4100
TC9163AF
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
FDATA
FCL
FSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
IN1L
IN2L
NC
IN1R
IN2R
NC
fR11
fR10
fR9
fR8
fR7
fR6
fR5
fR4
fR3
fR2
fR1
NC
VSS
CLK
DI
VCC ~CS
NC
VEE
TEST2
TEST1
fL1
fL2
fL3
fL4
fL5
fL6
fL7
fL8
fL9
fL10
fL11
NC
VDD
Q4400
NJU7306G
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
2021
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
T1STB
TDATA
TCL
+B
NC
NC
NC
NC
CS2 CS1
GNDSTB
DATA CK
VSSVDD
LM
LTRT
RM
Q4200
TC94A07F
1
2
3
4
5
6
7
8
9
10
11
1213
14
15
16
17
18
19
20
21
22
23
24
VCL
VDATA
VSTB
LEVEL
DET. of
POWER
AMP.
TUNER
PACK
Q181
RDS DECODER
BU1923F
D6600
RL6602
RL6600P6810D
LSP
RSP
CSP
Q231
SPEAKER
RELAY SW
TO SPEAKER TERMINALS
D6603
RL6605
RL6603
LSSP
RSSP
RSBSP
Q232
SPEAKER
RELAY SW
TO SPEAKER TERMINALS
LSBSP
RL901
Q2910,11
12V
TRIGGER
CONTROL
Q223,224
12V
TRIGGER
CONTROL
Q221,222
12V
TRIGGER
CONTROL
To BUS
TERMINALS
12V
TRIGGER
A
12V
TRIGGER
B
PROTECTION
CIRCUIT DET.
FOR DC/CURRENT
POWER
FAILURE
DETECTION
THERMAL
DETECTION
CIRCUIT
Q712
RAM
Q702
RAM
Q701
DECORDING
(AC-3,DTS,DTS
ES,PLII,NEO6)
CS493002
Q711
POST PROCESSING
(THX CINEMA,
THX SURROUND EX)
CS493002
Q801
DA CONVERTER
AK4536VQ
Q103
AD/DA CONVERTER
AK4528VF
Q7201
SUBMICROPROCESSOR
Q104
DIR
AK4114
+B
+B
+B
18
19
8
21
40
1
2
22
12
12
40
1
2
22
18
36
7
6
19
20
18
36
7
6
19
20
31
35
32
19
26
37
36
80
37
35
36
38
79
12
Q3400
ZONE 2 AMP.
MUTE
SW
Q4203
TC94A07F
Q4201
TC94A07F
Q4202
TC94A07F
FRONT CH.
VOLUME
SURROUND CH.
VOLUME
C/SW CH.
VOLUME SB CH.
VOLUME
Q4401
NJU7306G
FRONT CH.
TONE C/SW CH.
TONE
Q4800
HP AMP.
HP
MUTE
SW
To HP
JACKS
Q4410 FRONT
PRE AMP.
MUTE
SW
To PREOUT
Q4411 CENTER
PRE AMP.
MUTE
SW
To PREOUT
Q4421 SW
PRE AMP.
MUTE
SW
To PREOUT
Q4212 SUR
PRE AMP.
MUTE
SW
To PREOUT
Q4213 SB
PRE AMP
PRE
OUT
Q6901
BIAS SEL
RELAY SW
RL6901,2
BIAS VOLTAGE
SELECTOR
RELAYS
To
MAIN
POWER
TRANS.
SURROUND MODE
SELECTOR SW
SOURCE
SELECTOR SW
SOURCE
SELECTOR SW
A
1
2
3
4
5
B C D E F G H

TX-DS797
TX-DS797
A
1
2
3
4
BCD E
SUBMICROPROCESSOR-CONNECTION DIAGRAM
P7481
HEADPHONES
HPDET
D7534
+B
D7523
V2
D7524
V3
Q7524
Q7523
RED
GREEN
RZV2
RZV3
S7569
VOLUME
S7559
DISPLAY
S7579
ENTER
S7551
TAPE
S7573
PTY/TP
DIMMER
S7545
VIDEO 1
S7554
PHONO
S7564
ZONE 2
S7572
DSP >
S7544
DVD
S7553
AM
S7563
REC
S7576
MENU
S7547
VIDEO 3
S7556
EXIT
S7566
STEREO
S7571
DSP <
S7543
AUDIO SEL
S7552
FM
S7577
TUNING
DOWN
S7548
VIDEO 4
S7557
PRESET >
S7567
SURROUND
S7574
FM MODE
S7541
STANDBY
/ON
S7542
PUREAUDIO
S7578
TUNING UP
S7549
VIDEO 5
S7558
PRESET <
S7568
THX
S7575
MEMORY
S7546
VIDEO 2
S7555
CD
S7565
OFF
K0
K1
K2
K3
12
11
10
9
8
7
6
5
4
3
2
1
18
17
15
16
31
30
29
28
27
26
25
24
23
19
32
22
21
20
14
13
Q7503
2SC2712
F2
F2
NP
NP
NC
P35
P34
P33
P32
P31
P30
P29
P28
P27
P26
P25
P24
P23
P22
P21
P20
P19
P18
P17
P16
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
NC
NC
NC
NC
NC
NC
16G
15G
14G
13G
12G
11G
10G
9G
8G
7G
6G
5G
4G
3G
2G
1G
NP
NP
F1
F1
Q7501
16-BT-96GNK
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
Q7502
M66005FP
64
63
62
61
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
60
P27
P26
P25
P24
P23
P22
P21
P20
P19
P18
P17
P16
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
P2
P1
16G
15G
14G
13G
-VP
P28
P29
P30
P31
P32
P33
P34
P35
1G
2G
3G
4G
5G
6G
7G
8G
9G
10G
11G
12G
FLOSDDA
FLOSDCL
FLCS1
FLRES
Q7202
BUFFER
Q7201
M30624MGA-359FP
1
24 25 26 27 28 29
2
30
3 4
51 52 53
5 6
78 79
7
80
99
96
8 9
88
87
86
85
84
83
82
81
97
95
94
93
92
91
90
89
77 76 75 74 73 72 71 70 69 68 67 66 65 63 61 60 59 58 57 56 55 54
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
23 22 21 20 19 18 17 11 10
100
16
62
98
14
64
15 13 12
BYTE
CNVSS
VCC1
VSS1
XIN
XOUT
~RESET
IRABUS
FLOSDDA
FLOSDCL
OSDCS
FLCS1
REMIN
VDDA
VDCL
VSYNC
PURE-A
232RX
232TX
MAININ
LEDGRE
LEDRED
RZV1
RZV5
RZV4
RZV3
RZV2
VBJ
VAJ
SUBREQ
MAINSCK
MAINSO
SUBSO
TXD1
RTS1
CLK1
RXD1
HPDET
VCC2
VSS2
MAINREQ
SUBPOFF
VDST
RZCD
RZPH
RZFM
RZAM
RZT1
STBY
PURE
UPSPL
RZDVD
RI
AREA2 AREA1
AVCC
AVSS
VREF
SYNC
ISS
FLRES
K3
K2
K1
K0
NTSC
12V
RDS
Q7534
UPSPL
D7533
Q7533
STBY
D7538
Q7548
PRE-L
D7521
DVD
D7522
V1
D7525
V4
D7526
V5
D7527
T1
D7529
AM
D7530
FM
D7531
PH
D7532
CD
Q7539
Q7538
Q7532
Q7521 Q7522 Q7525
Q7526
Q7527
Q7529
Q7530
Q7531
RZDVD
RZV1
RZV4
RZV5
RZT1 RZAM
RZFM
RZPH
RZCD
+B
+B
OSDDATA
SW4
SW3
SW2
SW1
RST
OSDSCK
OSDCS
VSYNCOUT
XTALOUT2
XTALIN2
HSYNCOUT
XTALOUT1
XTALIN1
Vss
Q2001
LC74761-9189
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
U7201
PIC-26043TH
P202
IR-IN
IR-OUT
Q211
PC817X
+B
Q221,Q222
GATE
CIRCUIT
12V
TRIGGER
Q2005
VIDEO SELECTOR
SW TC9273
X7201
16MHz
Q7701
MAIN
MAICROPROCESSOR
RI
IN/OUT
INITIALIZING
29
SYNCDET
Y SIGNAL
DETECTOR
CIRCUIT
INITIALIZING
INITIALIZING
SYSOUT
+B
D7536
+B
Q7548
PRE-DOWN
D7537
Q7546
TUNDOWN
D7535
Q7547
TUNUP
TUNDOWN TUNUP PRE-L PRE-R

TX-DS797
SUBMICROPROCESSOR
Terminal Descriptions
TX-DS797
No, Function I/O Descriptions No, Function I/O
1 FLOSDDA O Serial data output pin for FL tube driver and OSD IC. 50 LEDGRE O
2 FLOSDCL O Serial clock output pin for FL tube driver and OSD IC. 51 RZTP O
3 OSDCS O Chip select output pin for OSD IC 52 RZAM O
4 FLCS O Chip select output pin for FL tube driver 53 RZFM O
5 MAININ I Signal input pin from remote control 54 RZPH O
6 REMIN I Signal input pin from external remote control 55 RZCD O
7 Z2RIN I Signal input pin from remote control of zone 2.Not used. 58 UPSPL O
8 VSS Power supply pin 58 PURE O
10 VDDA O Serial data output pin for video function switch IC 59 RZDVDO
11 VDCL O Serial clock input pin for video function switch IC 60 STBY O
12 RESET I System reset input. 62 VCC
13 XOUT O Connect the ceramic oscillator 16MHz. 63 VDST O
14 VSS Ground pin 64 VSS
15 XIN I Connect the ceramic oscillator 16MHz. 71 HPDET I
16 VCC Power supply pin. Apply 5V. 72 SYSOUT O
20 VSYNC I Vertical synchronizing signal input pin. 75 SYSIN I
24 PURE O Pure audio relay control output pin. Not used. 76 AREA1 I
29 232RX I Receiving input pin of RS232C. Not used. 77 AREA2 I
30 232TX O Sending output pin of RS232C.Not used.. 79 SUBPOFF I
31 TXD1 O Rewrite sending output pin to flash IC. 80 MAINREQ I
32 RXD1 I Rewrite receiving input pin from flash IC. 82 SYNCDET I
33 CLK1 I Rewrite clock input pin from flash IC. 84 ISS I
34 RTS1 O Rewrite response output pin to flash IC. 86 FLRES O
35 SUBSO O Data sending output pin to communicate between microprocessors. 89 RDS I
36 MAINSO I Data receiving input pin to communicate between microprocessors. 90 AMP I
37 MAINCL I Clock receiving input pin to communicate between microprocessors. 91 12V I
38 SUBREQ O Request signal output pin to communicate between microprocessors. 92 NTSC I
39 VAJ I Pulse signal input terminal A pin from rotary encoder. 93 K3 I
40 VBJ I Pulse signal input terminal B pin from rotary encoder. 94 K2 I
42 RZV2 O Video 2 indicator output pin. 95 K1 I
43 RZV3 O Video 3 indicator output pin. 96 VSS
45 RZV4 O Video 4 indicator output pin. 97 K0 I
47 RZV5 O Video 5 indicator output pin. 98 VREF
48 RZV1 O Video 1 indicator output pin. 99 VCC
49 LEDRED O Power supply control output pin for recording indicator.
Descriptions
Power supply control output pin for zone 2 indicator
Tape indicator output pin.
AM indicator output pin.
FM indicator output pin.
Phono indicator output pin.
CD indicator output pin.
Upsampling frequency indicator control output pin
Pure audio indicator output pin.
DVD indicator output pin.
STANDBY/RECEIVED indicator output pin.
Power supply pin. Apply 5V.
Strobe output pin for video switch control output pin
Power supply pin. Connect to ground.
Headphone detect5ion input pin.
System code output pin
System code input pin.
Initializing input pin for band aria.
Initializing input pin for band aria.
Power failure intercept input pin between microprocessors.
Request input to communicate data between microprocessors.
External synchronizing detection input pin.
S video signal detection input pin.
Reset signal output pin to the FL tube driver IC.
Initializing input pin for RDS broadcast.
Initializing input pin for model
Initializing input pin for 12V trigger.
Initializing input terminal for NTSC/PAL.
Operation key connection pin.
Operation key connection pin.
Operation key connection pin.
Power supply pin for A/D converter.
Operation key connection pin.
Reference voltage input pin for A/D converter.
Power supply pin for A/D converter. Apply 5V.

TX-DS797
ADJUSTMENT AND CONFIRMATION PROCEDURES 1
Idling current adjustment
Before Idling adjustment, turn the trimming resistors R6040,R6041,R6042,R6043,R6044 and R9046 to counter clockwise.
Connect the DC voltmeter to sockets P6080,P6081,P6082,P6083,P6084 and P6086.
After turn POWER to ON, adjust the trimming resistors R6040, R6041 and R6042 so that the reading of
voltmeter becomes 7.0 mV. (Front and center channels)
Adjust the trimming resistors R6043, R6044 and R6046 so that the reading of
After adjustment, attach the top cover.
voltmeter becomes 5.0 mV. (Surround and surround back channels)
Confirm the voltage of points above after about five minutes.
Front and center channels
When less than 9.0 mV, readjust the resistors above so that the voltage becomes 9.0 mV.
When 9.0 mV to 11.0 mV, you are not necessary to adjust.
When more than 11.0 mV, readjust the resistors above so that the voltage becomes 11.0 mV.
Surround and surround back channels
When less than 6.0 mV, readjust the resistors above so that the voltage becomes 6.0 mV.
When 6.0 mV to 8.0 mV, you are not necessary to adjust.
When more than 8.0 mV, readjust the resistors above so that the voltage becomes 8.0 mV.
Note: No load and No signal
L ch.
P6080 R6042 P6082R6041 P6081
R6043 R6044 R6046P6083 P6084 P6086
R ch. C ch.
SR ch.SL ch. SB ch.
NAAF-7250
R6040
+ID
-ID
+ID
-ID
+ID
-ID
+ID
-ID
+ID
-ID
+ID
-ID
Confirmation of protection circuit
1. Confirmation of operation of speaker relay
Confirm that the speaker relays turn ON approximate. 5 seconds after the power switch is turned ON.
Confirm that the speaker relays turn OFF immediately after the power switch is turned OFF.
2. Confirmation of DC detection circuit
Press and hold down CD button, then press STANDBY/ON and DISPLAY buttons to set the unit to
"TEST-1" mode.
After "TEST-1" on the FL tube light on, press VIDEO 1 button to set the unit to "TEST-1-00".
Apply DC 1.5 to 3V to MULTI CHANNEL INPUT terminal with no load.
Confirm that the speaker relay turns OFF.
Apply DC -1.5 to -3V to MULTI CHANNEL INPUT terminal with no load.
Confirm that the speaker relay turns OFF.
Caution: Don't apply DC voltage more than 1 sec..

TX-DS797
ADJUSTMENT AND CONFIRMATION PROCEDURES 2
3. Confirmation of Current detection circuit
Set the unit to "TEST-1-00".
Connect the differentiating circuit and apply the 200Hz square signal to MULTI CHANNEL INPUT terminal.
of each channel.
Adjust the attenuator or Volume so that the output level becomes 35V p-p.
Confirm that the speaker relay does not turn OFF when a 3.0 ohm load is connected.
Confirm that the speaker relay turns OFF when a 1.5 ohm load is connected.
CR
OSCILLATOR
DIFFEREN-
TIATING
CIRCUIT
ATTENU-
ATOR UNIT
SPEAKER
TERMINAL
MULTI
CHANNEL
INPUT
INPUT
OUT-
PUT
3.3k
10k
1SS133
3.3k
GND
0.01 F
0.1 F
OSCILLO-
SCOPE
Differentiating Circuit
200Hz
SQUARE
35Vp-p
Confirmation of fan
Set the unit to "TEST-1-00".
Apply the 1kHz -30dBV signal to the left channel of MULTI-CH terminal with no load.
Confirm that the fan rotates slow speed after few seconds.
Connect the 1.2 kohm/1W resistor between terminals COM and TH-1 of P6401 with no input signal.
Confirm that the fan rotates slow speed after few seconds.
Next apply the 1kHz -30dBV signal to the left channel of MULTI-CH terminal with no load.
Confirm that the fan rotates high speed after few seconds.
Connect the 1.2 kohm/1W resistors between terminals COM-TH-1 and COM-TH-2 of P6401 respectively with no input signal.
Confirm that the fan rotates high speed after few seconds.
P6931
P7701B
P9503A
JL6933A
P6401
COM
TH1
TH2
NAETC-7238

TX-DS797
ADJUSTMENT AND CONFIRMATION PROCEDURES 3
Test Mode
1. Turn POWER button on.
2. Press and hold down CD button, then press DISPLAY and STANDBY/ON buttons.
3. After "TEST-1" on the FL tube is displayed, press CD button to set the unit to the test mode of FL tube.
Note: VIDEO 1:TEST-1 VIDEO 2 :TEST-2 ZONE2: UP
VIDEO 3 :TEST-3 VIDEO 4:TEST-4 REC OUT: DOWN
Test-X YZ
Item
FL TUBE
The segments of even
number light on .
All segments
light on.
"FEDCBA987654321"
light on.
"AA BB CC DD EE"
light on.
Test mode of FL tube
REC OUT
ZONE 2
Press POWER button
to finish the test mode of FL tube.
AA:Model "89":TX-DS898 "79":TX-DS797
BB:Video Mode "NS": NTSC "PL": PAL AUTO
CC:12V TRIGGER "TR": Available " ":No available
DD:RDS "RD": Available " ":No available
The segments of odd
number light on .
Confirmation of voltage sensor
1. Set the unit to TEST-3-4.
2. Apply the signal 1kHz, -15dBV to the MULTI-CH
input. Confirm that the FM STEREO is displayed.
Confirm the all channels except SUBWOFFER.
3. When connect the resistor 1.2 kohm/1 W between
the terminals COM and TH1 of P6401, confirm that
"MEMORY" light on.
Note: No input signal.
4.When change set the unit to "TEST-4-39,confirm
that the speaker relays of RL6901 and RL6902
turn off.
Note: No input signal.
EE:Tuner band EU:Europe US: USA SA:Worldwide JP:Japan

TX-DS797
EXPLODED VIER
Front panel section
TX-DS797
10
29
U46
2
P7201
16
81
3
28
8
9
7
U45
U48
12
U47
5
4
U3
U44 U2
U9 U15
31
6
13
1
30
A
1
2
3
4
5
B C D E F G H

TX-DS797
EXPLODEDVIEW
TX-DS797
69
68
67
69
68
67
65
37
44
43
30
42
E821
49
T901
39
U8
57
4
4
F6901
F6902
U17
4
4
30
F9502
4
F9504
F9501
U29
4
4
F903
U7
U39
F901
F902
55 U22
U18
U6
4
4
52
U11
U10 U38U37
U36
U40
71
76 75 71 77
73 72
74 70
P901
56
4
U35
U33 U32
38
U51
P1010 U31
U1
P7201 63
65
62
65
35
36
34
37
36
58
4
52
56 4
33
97
97
4U13
U17
Q6062
F9503
U21
Q6056
Q6066
55
4
57 60
32
16
81
3
28
8
9
7
U45
U48
12
U47
5
4
U3
U44 U2
10 29
U9
U46
2
U15
31
6
U12
P7701
30
47
86
33
54 U23
Q6050
13
1
30

TX-DS797
EXPLODED VIEW-PARTS LIST
REF. NO.
1
2
3
4
5
6
7
8
9
10
12
13
14
16
28
29
30
31
32
33
34
35
36
37
38
39
41
42
43
44
47
49
52
53
54
55
56
57
58
60
61
62
63
65
PART NO.
27111248
27111249
27111250
27141787
838430088
838130088
27215360
27215361
27215362
27150472
28191942
28191943
28325964A
28198778
82143010
28325965
28330142
27270375
28135244
28135245
28325898
28325899
28325900
28325497A
28325547A
28325499A
880016
27255004
29110083
27100408
27130870
27190965
27190693A
27190266
27190164
830440089
28141484
27141797
838450108
27150470
27150471
27150474
27160489
801433
27141681
27141798
27141799
27130869
27130745
27190470
838430107
28184817
28184818
28184819
29362959
838430088
838930088
DESCRIPTION
Front bracket <B>
Front bracket <S>
Front bracket <G>
Retainer HP
3TTB+8B(BC),Self-tapping screw
3TTB+8B,Self-taping screw
Decorative frame <B>
Decorative frame <S>
Decorative frame <G>
Shield plate, FFC
Clear plate <B>
Clear plate <S/G>
Knob CL
Facet
3P+10FN(BC),Pan head screw
Knob, tuning
Cap, tuning
Spacer
Badge <B>
Badge <G/S>
Knob, volume <B>
Knob, volume <S>
Knob, volume <G>
Knob, power <B>
Knob, power <S>
Knob, power <G>
P3035B,Plastic rivet
CS-1U,Clip
Tape, cloth
Chassis
Bracket PT
Holder
KGLS-6RF,Holder
KGLS-12RF,Holder
KGLS-14S,Holder
4TTC+8C(BC),Self-tapping screw
Cushion
Retainer, fan
5TTB+10B(BC),Self-tapping screw
Shield plate, fan
Shield plate, amp.
Shield plate, wire
Heat sink
3SMS8W.SW+14B(BC),Special screw
Retainer, PCB
Retainer, heat sink R
Retainer, heat sink L
Bracket, heat sink
Bracket
KGLS-18S,Holder
3TTB+10S(BC),Self-tapping screw
Top cover <B>
Top cover <S>
Top cover <G>
Label
3TTB+8B(BC),Self-tapping screw <B>
3TTB+8B(UN),Self-tapping screw <S/G>
REF. NO.
67
68
69
70
71
72
73
74
75
76
77
81
86
97
E821
F6901,F6902
F901
F902
F903
F9501,F9502
F9503,F9504
P1010
P7201
P7701
P901
Q6050-Q6054
Q6056
Q6060-Q6064
Q6066
PART NO.
27175319A
28141332
831430088
27122906
27122907
27122908
27122909
27122910
27122911
838430088
87643010
838930088
838430068
27191130
838440089
27300750
27212349A
27212350A
27212351A
27212352A
260208
223025
24502310
252199
252100
252199
252077,
252243 or
252277
252075,
252241 or
252275
252160 or
252254
252075,
252241 or
252275
252158 or
252252
252073 or
252239
2047151012
2047335512
2047051012
253279HIT or
253280VOL
253233KAW
253197HIT
253267KAW,
253285HIT or
253286VOL
2202823 or
2202822
2202813 or
2202812
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
*
*
*
*
DESCRIPTION
Leg
Cushion
3TTW+8B(BC),Self-tapping screw
Rear panel <D>
Rear panel <P>
Rear panel <WT>
Rear panel <A>
Rear panel <R>
Rear panel <GT>
3TTB+8B(BC),Self-tapping screw
W3*10F(BC),Flat washer
3TTB+8B(UN),Self-tapping screw
3TTB+6B(BC),Self-tapping screw
Holder, outlet <R>
4TTB+8C(BC),Self-tapping screw <O>
Bushing cord
Front panel <B><D/WT/A>
Front panel <B><P>
Front panel <S>
Front panel <G>
Wire tie
AC262,Isolated sheet
D09T-24PG10(EX),Fan
10A-UL, Fuse <D>
10A-EAK, Fuse <O>
10A-UL, Fuse <D/WT/WR>
4A-SE-EAK,
4A-SE-TL250V or
4A-SE-TL250V,Fuse <O>
2.5A-SE-EAK,
2.5A-SE-TL250V or
2.5A-SE-TL250V,Fuse <O>
2.5A-UL/T-237 or
2.5A-T/UL-ST2,Fuse <D>
2.5A-SE-EAK,
2.5A-SE-TL250V or
2.5A-SE-TL250V,Fuse <O>
1.6A-UL/T-237 or
1.6A-T/UL-ST2,Fuse <D>
1.6A-SE-EAK or
1.6A-SE-TL250V,Fuse <O>
NCFC7-151012,Flat cable
NCFC7-335512,Flat cable
NCFC7-051012,Flat cable
AS-UC-2#18 or
AS-UC-2#18,Power supply cord <D>
AS-CEE-2,Power supply cord <P/WT/GT>
AS-SAA,Power supply cord <A>
AS-CCEE,
AS-CCEE or
AS-CCEE,Power supply cord <R>
2SC5200-O or
2SC5200-R,Transistor
2SA1943-O or
2SA1943-R,Transistor
!
!
!
!
!
!
!
!
!
!
NOTE: THE COMPONENTS IDENTIFIED BY MARK !
ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.
CAUTION: Replacement for transistor of mark *, if necessary
must be made from the same beta group (HFE) as
the original type.