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TX-SR307
Ref. No. 4130
032009
SERVICE MANUAL
AV RECEIVER
MODEL TX-SR307
RC-735M
TX-SR307 Black, Silver and Golden models
B MDD, S MDD, B MDC ,G MDF 120V AC, 60Hz
B MPP, S MPP, 230V AC, 50Hz
B MMO, S MMO, B MMQ, G MMR 220V/220-240V AC, 50/60Hz
TX-SR307 For HT-S5205 Black and Silver models
B MPP, S MPP, 230V AC, 50Hz
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-SR307
EXPLODED VIEW
only
A354
P901 x 8 pcs. A360
A103 A105
x 4 pcs. x 25 pcs. U004 A350
A056
A070
P101 A256
A262 U002
A342
U010 x 7 pcs.
A062 A340
U0032
A021 x 3 pcs.
F6901C U001-3 A042 A362
F6901 x 2 pcs.
F6902C A036 A044 x 2 pcs.
A101 A6601A F6902 U001 x 2 pcs.
x 4 pcs.
A038 P701 A264
F901 x 2 pcs.
A034 A262
F901C
A225
A050 x 27 pcs. A264
U0033 x 4 pcs. U003 x 2 pcs. A238
x 2 pcs.
A040 A232
A025 x 5 pcs. A230 A236
x 4 pcs. x 2 pcs. A030
A219 A258
A064 x 2 pcs.
U0012 A032
A040 A201
U0011
A040 U0031 A252
x 2 pcs. A205
T901 A221 A213
A215
A217 A250
A001
A036
A060 x 2 pcs. A238
x 3 pcs. A013 x 2 pcs. A330
x 2 pcs. A234
A003 A019 A258 A207 A203
x 4 pcs. A009 x 2 pcs.
A015 x 3 pcs.
TX-SR307
A007
x 4 pcs. A260
A005 A011 A069 A040 x 3 pcs.
x 4 pcs. A010 U003-4
TX-SR307
A B C D E
BLOCK DIAGRAMS-1(PART-1) AUDIO ANALOG SIGNAL
FRONT L
AUDIO SECTION FRONT R
AUDIO DIGITAL SIGNAL
1
MULTI MEDIA UNIT
MULTI MEDIA
TUNER PACK Q5
85
IN
MULTI
MAIN R
MAIN L
SUB L
86
MIC AUX FL 94
SUBR
TX-SR307 YES YES 82
INVERTING
HT-R370 NO NO 55
43
HT-R570 NO YES
81
54 FR 93
2 FRONT BOARD MIC AMP
MIC Q7401
73 INVERTING 42
72 CEN 95
MICDET
L 78
38
AUX IN
(FRONT IN) 98
R 79
41
71
MINI JACK
(FRONT IN) 97
3 70
40
CD
68
SW 96
69
TAPE OUT 39
66 SL 100
TAPE IN 67
37
SR 99
64
4
36
65
CBL/SAT IN
44
62
45
VCR/DVR OUT
63
60
VCR/DVR IN
61
5 DVD
58
REC R
REC L
59
REC L
COAX 1 90
47
Z2 L
REC R 91
46
Z2 R
76
6 OPT1 75
OPT2 84
83
HDMI
FR FL C SW SL
HDMI IN4
HT-R570 ONLY
LPF
LPF
LPF
LPF
Q401
Q402
Q402
Q403
LPF
Q401
IN4
32
33
31
30
36
37
35
34
28
29
7
16
IN3 -
15
14 2ch ADC
13
-
IN2 49
Micro
Controller HDMI
43
42 8ch DAC
RX 44
IN1 45 DIR
46
48
47
Q301 CS42518
50
OUT HDMI
TX
8
TX-SR307
F G H I J K
HEADPHONES
Q5501 R2A15218FP
23 FL
TONE
24 POWER AMPLIFIER SPEAKER TERMINALS
+29dB
FRONT LEFT
21 FR
TONE
20 +29dB
FRONT RIGHT
17 C
+29dB
CENTER
11 SL +29dB
SURR LEFT
12
+29dB
9 SR SURR RIGHT
8
+29dB
15 SW
SUBWOOFER
HT-R370
ONLY
14
+
5
SW-PREOUT SP B LEFT
TX-SR307
ONLY
6
SP B RIGHT
3
RIGHT
2
HP RL
AMUT
CSRL
HP IN
SP B
FRL
RI
INTERFACE RI
Q282 Q281
FLASH ROM SD_RAM
16M Bit 16M bit
38
SDRAM CLK
133MHz
SR
FRONT BOARD
LPF
Q403
BCLK 3.07MHz 142
LRCK 48KHz 144 Q201
117
70
MICOM Q7003
27
26
22
23
21
20
116
DSP 108 DSPCLK DSPCLK 29 7 FLDCLK 7
115
113
TMS320D708E
110 DIGSDO DIGSDI
DIGSDO
59
60
Q701 6 FLDSDO 8
M66005
2
111 DIGSDI SPI
DIGCLK 58 M30627FJPGP
XOUT 12
13
2
3
XIN
XOUT 18
20
10
9
8
62
63 500KHz
XIN
64
17
1
SPI
120
139
141
1
2
C 55 12.288MHz
DSP_RMCLK
XTAL-X701
SO
SI
SO
SI
2
5
Q610
7
EEPROM
8 SPI 6MHz CLK CLK 6
9
61 BCLK 3.07MHz
18 60
54
LRCK 48KHz
I2S(DIR/ADC) 17.734MHz
1
XTAL-X202
59 24.576MHz
1
XTAL-X171
24.576MHz
TX-SR307
A B C D
BLOCK DIAGRAMS-2_1 (PART-2_1)
VIDEO SECTION
VIDEO SECTION
1
HT-R570 ONLY
TMDS3
TMDS
CEC
CEC
DDC3
HDMI IN4 DDC
RPWR3
+5V
HPD3
HP DET
TMDS2
TMDS
CEC
CEC
DDC2
HDMI IN3 DDC
RPWR2
+5V
HPD2
HP DET
TMDS1 TMDS
TMDS TMDS
CEC DDC
CEC PS421 CEC
DDC1 RPWR
HDMI IN2 DDC HDMI SW DDC HDMI OUT
RPWR1 HPD +5V
2
+5V NJM2860F3-05
HPD1
HP DET I2C HP DET
+5V Reg
TMDS0
TMDS
CEC
CEC
DDC0
HDMI IN1 DDC
RPWR0
+5V
HPD0
HP DET
Y1
3
CB1
CR1
NJM1326FH2
Y2
PY
CB2
6dB DRV
Y
DRV
CR2
DRV COMPONENT
CB
OUT
COMPONENT VIDEO INPUT
PB
6dB DRV CR
4 DRV
DRV
MONITOR
PR
6dB DRV VCR/DVR
DVD
DRV
COMPOSITE VIDEO OUTPUT
VCR/DVR DRV
CBL/SAT
CV
4/6dB DRV
AUX1
(FRONT)
DRV
5 COMPOSITE VIDEO INPUT
DRV
MUTE
I2C
TX-SR307
A B C D E
BLOCK DIAGRAMS-2_2 (PART-2_2)
POWER SUPPLY SECTION
POWER SUPPLY SECTION
1 +3.3V
MPU Board
50mA
I O MPU
G
M.PORT
300mA
PS Board
SUB TRANS
+5V
2 100mA
I O ANALOG VIDEO VIDEO Board
G
1
200mA
CODEC
+3.3V
I O
G
MAIN TRANS
18
VFD
S4
2
DRIVER
HDMI Board
17
+3.3V
FLAC DC-DC +4V
I O
500mA
16 VFD
G
+3.3V
+1.8V HDMI
I O 500mA
G
I O
G
S3 +4V
+3.3V
250mA
DC-DC I O
G
DSP
14 -VP
+1.2V SDRAM
500mA
I O FROM
G
+5V
VIDEO Board
I O
G
11
S2
MPU Board
13 DIGITAL
ZENNER +9V 110mA
3
TUNER
TR
OPAMP
+15V
ZENNER +7V
I O
G
TR
ASP
-15V
ZENNER -7V
I O
G
TR
10 S1H+
9 S1L+
ASP& Board
8
S1 +B
7 S1L- Power Amp
TX-SR307
-B
4 6 S1H-
POWER AMP
TX-SR307
A B C D E
BLOCK DIAGRAMS-2_3 (PART-2_3)
WIRING SECTION
1
JL7101A
JL7101B
9P CABLE
P701B
33P FFC
DISPLAY BADIS-0037
33P FFC
BADIS-0036
HP JAKE
BAETC-0040
JL6605A
5P or 2P CABLE
CPU 5P CABLE
2
P701A
BADG-0022 JL6605B POWER TRANS
P5504A
P5504B
9P SOCKET
P6900B
33P FFC
AMP
BAAF-0002 C6901 C6902
BAPS-0004
JL9101A JL901A
P5503A
P5503B
9P SOCKET
JL801A BAPS-0003
JL901B
5P CABLE 5P CABLE 9P CABLE
P911(2P)
11P FFC
P5502A
JL9101B
P5502B
JL901A
P101A
15P SOCKET P912(5P)
JL801A 5P CABLE
JL901A
P2001B
26P SOCKET 5P CABLE
7P CABLE
3 VIDEO
P2001A
TUNER UNIT
P5501A
7P SOCKET
P5501B
BADIS-0036 P901
P8001A
PWO SUPPLY
JL801B BAPS-0039
P8001B
24P SOCKET
HDMI
BAHDM-0058
TX-SR307
4
TX-SR307
A B C D E
SCHEMATIC DIAGRAMS-1 (PART-3) AUDIO ANALOG SIGNAL
FRONT L