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TX-SR608
Ref. No. 4197
042010
SERVICE MANUAL
AV RECIEVER
MODEL TX-SR608 (B)/(S)/(G)
RC-765M
Black, Silver and Golden models
BMDD,BMDC 120V AC, 60Hz
BMMP,SMMP,BMMB 230V AC, 50Hz
BMMO,BMMQ,BMMA 220-240V, AC 50/60Hz
GMMR,BMMR
BMDF 120V AC, 60Hz
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAM 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.
TX-SR608
SERVICE PROCEDURE
1. Replacing the fuses
This symbol located near the fuse indicates that the
fuse used is show 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 utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.
: North American model : Hong Kong model
: Australian model : European model
: Canadian model : Britain model
: Saudi Arabia model : China model
: Taiwan model
REF No. PART NAME DESCRIPTION PART N O. REMARKS
F6901 FUSE 12A-TUL-250V 252301GR
F6902 FUSE 12A-TUL-250V 252301GR
F901 FUSE 5A-SE-EAK FUSE 252078GR MMR / G MMR / S MMP>
F901or FUSE 5A-SE-TL250V 252278GR MMR / G MMR / S MMP>
F901 FUSE 10A-UL/T-233 252330GR
F901or FUSE 10A-T/UL-ST2 252333GR
2. To initialize the unit
1. Press and hold down VCR/DVR button, then press ON/STANDBY button when the unit is powered on.
2. After Cl ea r " is displayed, the preset memory and each mode stored in the memory are initialized and will
"
return to the factory settings, and turn to Standby mode.
3. Remove the AC cord from power line.
3. Safety check out
(U.S.A. model only)
After correcting the original service problem, perform the following safety check before releasing the unit to
the customer.
Leakage current Check
Measure the leakage current to a known earth ground (water pipe or conduct etc.) by connecting a leakage current
tester between the earth ground and exposed metal parts of the unit (input/output ground terminals, screw heads or
metal overlays etc.).
Plug the power supply cord directly into a 120Vac 60Hz wall socket and turn ON/STANDBY button on.
Any current measured must not exceed 0.5mA.
4. Memory Backup
This model uses a EE-PROM IC in order to retain radio presets and other settings. So, memory contents will be
kept eternally with no care.
TX-SR308/ /508/ 578/ 608 HT-R280/ 380/ 538/ 580/ 680/ 980/ C230/ C260 DTR-20.2/ 30.2
TROUBLE SHOOT-1 This is just for general reference and does not including every single case.
No Power
No Power
BAETC-0376/0390
(Power supply)
BADG-0364 (MPU Board) BADG-0364 (MPU Board)
BAETC-0376/0390 (Power supply) YES NO
TX-SR308/ /508/ 578/ 608 HT-R280/ 380/ 538/ 580/ 680/ 980/ C230/ C260 DTR-20.2/ 30.2
After Power on, Replace Q701 and also
BADG-0364 (MPU Board) Voltage atJL901_1pin is changed repairits peripheral circuit.
JL901 4pin +12V from +12V t o 0V?
2pin +10V
NO YES
BAETC-0376/0390 (Power supply) BAETC-0376/0390
Replace Power Supply Board orRepair (Power Supply)
Sub Transformer T902 and itsperipheral F901 is blown out?
circuit.
YES NO
After replacing F901 on BADG-0346 (MPU Board)
NO After Power on, Voltage at YES
BAETC-0376/0390 (Power supply)
P2001 22/21pin +5V
either of F901 on Power supply Board Replacing F901 will not
17/18pin +12V
improve the unit.
or F6901/F6902 on BAAF-0341(AF
Board) blows out?
NO
YES
BAETC-0359/0352/0345/ BAVD-0375/0389
BAAF-0355(AF Board) (trans teminal Board) (Video board)
After Power on, Voltage at
YES
Replace Video Board or
Replace "AF Board". JL952 AC10V Repair D901/Q9023/Q9031
or "D6901 (Power supply diode)" and their peripheral circuit.
"Power AMP(Final_TR and A_Class AMP) "
NO
and also repair their peripheral circuit.
Replace Power
Transformer or
Repair its peripheral circuit.
TX-SR308/ /508/ 578/ 608 HT-R280/ 380/ 538/ 580/ 680/ 980/ C230/ C260 DTR-20.2/ 30.2
A B C D E F G H
TROUBLE SHOOT- 2 This is just for general reference and does not include every single case.
The above waveforms are got by Oscilloscope of Maximum Horizontal Sensitivity: 100MHz.
No Display The results depend on the oscilloscope.
1 No Display
Fluorescent Display Tube
NO BAPS-0342/0349/0356(-VP Board) BAPS-0342/0349/0356 (-VP Board) BADIS-0373/ 0387
is not working? JL953 between 2pin-4pin: AC3.3V JL953 3pin -33V (Display Board)
YES YES P701 BADIS-0373/ 0387
1pin and 5pin +3.3V
26pin FLD_SDD (Display Board)
YES
NO NO 27pin FLD_CLK YES Replace Display Board
28pin FLD_CS or repair Q7003 and
Replace Fluorescent BAPS-0342/0349/0356
Display Tube or BAPS-0342/0349/0356(-VP Board) Transmission of each their peripheral circuit.
(-VP Board)
BADIS-0373/0387(Display JL951 1pin-2pin AC3.3V JL951 3pin-4pin AC40V of the signals is correct?
2 Board). NO
YES NO
NO
BAPS-0342/0349/0356 BAPS-0342/0349/0356
NO
(-VP Board) (-VP Board) Replace Power transformeror BADG-0413(MPU Board)
Replace -VP Board or R950(8.2 ) is disconnected? Repair its peripheral circuit.
Check for signal line YES Replace MPU Board.
damage etc. and fix any or Repair Q701 and
YES their peripheral circuit.
damages.
BAPS-0342/0349/0356 (-VP Board) BAPS-0342/0349/0356 (-VP Board)
Replace R950 (8.2 ) or -VP Board Replace -VP Board or Repair
3
Q960/D960/D962/R961 and
their peripheral circuit.
FLD_CLK FLD_SDD(DATA) FLD_CS
V:1V/cm
H:02Msec/cm
4
Timing of Serial Communication
V:1V/cm
H:10µsec/cm
1 byte data 1 byte data
address data data to be V:1V/cm
H:1µsec/cm
5
TX-SR608 HT-RC260 DTR20.2/ 30.2 TX-SR608 HT-RC260 DTR-20.2/ 30.2
A B C D E F G H I J K
TROUBLE SHOOT-3 Note:
This is just for general reference and does not include every single case.
No Sound
The above waveforms are got by Oscilloscope of Maximum Horizontal Sensitivity: 100MHz.
The results depend on the oscilloscope.
1
No Sound No Sound
No Sound from ANALOG input
from COASXL/OPT input
from HDMI input
Y
BADG-0364(MPU Board) BAETC-0359(torans terminal)
BAHDM-0403(HDMI Board) N P2001 21 22pin +5V N N
BAHDM-0403(HDMI Board)
DIR_OUT JL952 1-3pin AC10V BAAF-0355(AF Board)
P8001 16pin HDMI_SPDIF . BAAF-0355(AF Board)
15pin HDMI_MCK Y P8001 3pin DIR_BCK AUDIO-SEL_OUT BCAF-0355(AF Board)
5pin DIR_LRCK Signal output is no problem? Q4170 3pin +5V
13pin HDMI_BCK Y Y N Q4171 3pin -15V N Replace AF Board or
11pin HDMI_LRCK 7pin DIR_FLR Each PRE-OUT or Repair Q4170, Q4171, Q4181,Q4185
P8002 23pin DIR_MCK Q4184 E +7V
9pin HDMI_FLR P6600 SBR--1pin SR--3pin and their peripheral circuit.
Q8185 E -7V
Waveforms are no problem? Waveforms are no problem? BADG-0364(MPU Board) BAVD-0375/0389(Video Board) FR--5pin C------7pin FL--9pin
2 Replace MPU Board or Replace Video Board or SL--11pin SBL---13pin
Repair Y
Replace
N Y U131/132 Q301 Q131 or
Q9031/D9011/R9013/R9012 Y
and their peripheral circuit. BCAF-0355(AF Board)
Repair their peripheral circuit. Replace AF Board or
BADG-0364(MPU Board)
BADG-0403 (HDMI Board) Repair Q4001 and its
DSP_OUT peripheral circuit.
JL801 1&4pin +12V P8002 24pin DSP_FL/R BATRM-0368(TRM Board)
N BADG-0403(HDMI Board) N BAETC-0359(torans terminal) N
,P8001 8pin DSP_SL/R JL952 1-3pin AC10V JL600(AMP_OUT)
, 10pin DSP_CSW JL801 2pin and 4pin +12V Signal output is no problem?
N . 4pin CX_SCLK SR----6pin FR----5pin
N
6pin CX_LRCLK Y C------4pin FL-----3pin
Waveforms are no problem? Y SL-----2pin SBR--7pin
SBL---1pin
3 Y BAVD-0375/0389(Video Board)
BAHDM-0401(HDMI Board) Replace Video Board or
BAETC-0359 (torans terminal)
Make sure that JL801 2pin & 4pin is
Y
Repair
JL952 1-3pin AC10V 12V. Replace HDMI Board or D9011/9013/R9012
Repair Replace Q2001(DSP-IC) or and their peripheral circuit. BCAF-0355(AF Board) N
Repair its peripheral circuit. BATRM-0368(TRM Board) N Replace AF Board or
JL603 1Pin +22V Repair R4160/4166
Y Y
D4300/4301/4302/4303 and
N their peripheral circuit.
Y
BAVD-0375/0389(Video)
Replace Video Board or Repair
D9011/R9013/R9012 BADG-0364(MPU Board) BADG-0364(MPU Board)
and their peripheral circuit. DAC_OUT P5503 3pin (SEC1H) N
Voltage changes from 0V to N BCAF-0355 (AF Board) N
Analog signal outputs from 4-9
4 pins of P5502? N BADG-0364(MPU Board) N BAETC-0359(torans terminal) N 3V about 2 or 3 seconds after P6901(+55V) P6902(-55V)
P2001 21 22pin +5V JL952 1-3pin AC10V power-on? BADG-0364(MPU Board)
4pin----FR 5pin----FL
P5503 6pin(I-pro):0V
Replace Power 6pin----SW 7pin----C Y 5pin(V- pro):0V
transformer or 8pin----SR 9pin----SL
8pin(V-olh):0V
Repair its peripheral BATRM-0368(TRM Board) Y
Y Y JL501 3pin(THE): +1V or lower
circuit. JL610 1pin, 2pin, 3pin, 4pin
Voltage changes from 0V to
N
BADG-0364(MPU Board) BAVD-0382/0389(Video Board)
Replace MPU Board or Replace Video Board or Replace Power 3V about 3 or 4 seconds BCAF-0355(AF Board)
BAHDM-0403(HDMI Board) Y Replace Q302 or Repair transformer or after power-on? Replace AF Board or
Make sure that JL801 3pin is 12V
Repair its peripheral circuit. Q9031/D9011/R9013/R9012 Repair its peripheral Repair Final TR
Replace HDMI Board
and their peripheral circuit. circuit. Y Y and their peripheral circuit.
or Replace Q8501(HDMI_4RX)
Q81061(HDMI 1st SW) BCAF-0355(AF Board)
or Repair its peripheral circuit. BATRM-0368(TRM Board) BACLA-0362 Replace AF Board or
5 BADG-0364(MPU Board)
(A_Class amp Board) Replace D6901 F6901
Replace TRM Board or Replace MPU Board or
F6902 and repair their
Replace "A_Class amp Board"
Repair Q6601/6602/6603/6604 Replace Q701 and repair
and their peripheral circuit. peripheral circuit.
R6690, and their peripheral its peripheral circuit.
circuit.
6
DIR_FLR DIR_LRCK DIR_BCK DIR_MCK
DSP_FLR/SLR/CSW CX_LRCK CX_SCLK HDMI_MCK
HDMI_SPDIF
HDMI_FLR HDMI_LRCK HDMI_BCK
7
V:1V/cm H:0.1µ/cm
V:1V/cm H:0.1µ/cm V:1V/cm H:5µ/cm V:1V /cm H:0.1µv/cm V:1V/cm H:0.1µv/cm
8
TX-SR578/ 608 HT-R680/ 980/ RC260 DTR-20.2/ 30.2
A B C D E F G H
TROUBLE SHOOT-4 Note:
No Pictuer This is just for general reference and does not include every single case.
1
No Picture from HDMI No Picture from HDMI No Picture from HDMI No Picture from HDMI
No Picture from Analog
(COMPONENT/S_VIDEO Input) (All HDMI Input) (HDMI Input from 1 to 4) (Front HDMI Input)
(COMPONENT/ S_VIDEO Input)
BADG-0403(HDMI Board)
P2801 2pin V out
2 4pin Y out
N 6pin B out
8pin R out
Video Signal OK?
Y
Y
BAVD-0375/0389 BAVD-0375(Video)
(Video Board)
N N BADG-0403(HDMI Board) JL801 2&4pin +12V
JL952 1-3pin AC10V
JL952 1-3pin AC10V
No Picture from HDMI
No Picture from HDMI
(Front HDMI Input)
(All HDMI Input)
3 Y N Y Y Y Y Y
(COMPONENT/S_VIDEO Input)
BAVD-0375/0389
(HDMI Input from 1 to 4)
N
No Picture from HDMI
(Video Board)
Q9022 3pin +5V
No Picture from HDMI
Y
Replace Power BADG-0403(HDMI Board)
transformer or BADG-0403(HDMI Board)
Q8200(cannot Replace) Q8200(cannot Replace)
Repair its peripheral
Replace HDMI Board
circuit. Replace HDMI Board
or Replace Q8501/8801/8802
or Replace Q8161/8501/8801/8802
/8803/8804/8806/8807 and repair
/8803/8804/8806/8807 and repair
its peripheral circuit.
its peripheral circuit.
4
BADG-0403(HDMI Board)
BAVD-0375/0389 BAVD-0375/0389 BAVD-0375/0389
BADG-0403(HDMI Board) Q8200(cannot Replace)
(Video Board) (Video Board) (Video Board)
Q8200(cannot Replace) Replace HDMI Board
Replace Video Board or Replace Video Board or Replace Video Board or or Replace Q8161/8501/8801/8802
Replace D9011/R9013 Replace HDMI Board
Replace Q2001 and repair Replace Q9022 and repair or Replace Q8803/8804/8401 /8803/8804/8806/8807 and repair
its peripheral circuit. its peripheral circuit. /R9012 and repair
and repair its peripheral circuit. its peripheral circuit.
its peripheral circuit.
5
TX-SA578/ 578V/ 608 TX-SR508/ 608 HT-R680/ 980/ C260 DTR-20.2/ 30.2
A B C D E F G H
Reference materials
BLOCK DIAGRAMS (HDMI Video & Digtal Audio Section)
BAHDM-0403 HDMI Board
1 CEC
TX-SR608, TX-SA608, HT-RC260,
DTR-20.2, DTR-30.2
RGB
VS,HS CH,BH,AH
PC VIDEO IN AVS,AHS
I2C
I2C
Q8200
FLI32626
TC74VCX162827FT x4
SEQUIOA +5V Hot Plug
Video Q8803
Processor Q8804 Q8401 TMDS
TMDS
2 ADINPY
B3P 12bit x3
SII9136
DDC
CEC
ADIN(FFC)
TTL Tx DDC HDMI OUT
ADINPB +5V
SV3P HDMI HPD
HP DET
ADINPR Q8801 Tx
A2P
ARC S/PDIF
Q8802
ADINCV
C4P
HDMI MCK Bus switch
HDMI BCK Q205
GND HDMI LRCK TC74VHC157F
I2S
HDMI FLR
PCMLRCK_DR0
TX-SR608, TX-SA608, DTR-30.2 PCMBCK_DSDCLK
MXK_HDMI
TMDS Q8661 TMDS PCMLR_DL0
TMDS TMDS141
CEC
HDMI CEC Rx Tx
DDC HDMI Buffer DDC
FRONT DDC Rx3
RPWR
+5V
HPD
3 HP DET Q8501
SII9233
HDMI PCMSLR_DR1
TX-SR608, TX-SA608, HT-RC260, 4Rx PCMCSW_DL1
DTR-20.2, DTR-30.2 TC74VCX162827FT x2 PCMSBLR_DR2
TMDS HDMI S/PDIF
TMDS Rx2 12bit x3
CEC Q8806
CEC TTL
HDMI IN5 DDC Q8807
DDC Rx0
RPWR 10bit x3
+5V
HPD
HP DET TTL in TTL out
10bit x3
TMDS Bus switch
TMDS
CEC
CEC Rx1
HDMI IN4 DDC Q201 DSP
DDC Rx1 12bit x3
RPWR Q8161
+5V
HPD SiI9387
HP DET
DIR MCK
HDMI DIR BCK
TMDS Fast Switching TMDS DIR MCK
4 TMDS
CEC HDMI MCK CX LRCK
DIR LRCK
CEC HDMI BCK DIR FLR
HDMI IN3 DDC DDC CX SCLK
DDC Rx2 Tx Rx0
RPWR RPWR HDMI LRCK DSP FLR
+5V
HPD HPD HDMI FLR
HP DET HDMI MCK CX LRCK
PCMSLR_DR1
HDMI BCK CX SCLK
PCMCSW_DL1
DIR MCK
TMDS HDMI LRCK DSP SBLR
TMDS PCMSBLR_DR2
CEC HDMI FLR DSP SLR
CEC