Onkyo TX-SR302, Service Manual

Page: 12 / 67

SCHEMATIC DIAGRAMS-1
PRE-AMPLIFIER SECTION
TX-SR302 TX-SR302
Q7004
BA33C25
2.5V
5
3.3V
4
G
3
NC
2
VI
1
P406
L805 NC
Q702 NC
A0
20
A1
19
A10
31
A11
1
A12
1
2
A13
4
A14
5
A15
1
1
A16
1
0
A17
6
A18/VPP
9
A2
18
A3
17
A4
16
A5
15
A6
14
A7
13
A8
3
A9
2
DQ0
21
DQ1
22
DQ2
23
DQ3
25
DQ4
26
DQ5
27
DQ6
28
DQ7
29
VCC
8
VSS
24
CE
30
OE
32
WE/A18
7
P801
TO NAETC-7884
Q9501
Q6402
78M12
G I
O
Q6406 78M05
G I
O
Q6405 78M12
G I
O
Q6403 79M12
G
I O
P6403
P306
TO NAAF-7866
P410B
TO NAETC-7868
P7502B
TO NADIS-7403
P411B
TO NAETC-7868
Q321 78L07
G I
O
Q322 79L07
G I
O
P302
VIDEO-3 IN
P261A
NC
P802
NC
P305
DVD
SURROUND R
SURROUND L
SUB WOOFER
CENTER
P304
VIDEO-1 OUT
VIDEO-1 IN
VIDEO-2 IN
P301
CD
TAPE IN
TAPE OUT
Q7003
TC74HCT7007
1 2 3 4 5 6 7
8 9
10 11 12 13 14
NC
FOR FLASH WRITER
P101
TO TUNER UNIT
Q101
NC
T2 T1
VSS2 VDD2
XI
X0
T57
RCLK
CMP VSS3 VSS1 VDD1 MUX VREF RDSDATA QUAL
Q181
1 2 3 4 5 6 7 8
9
10 11 12 13 14 15 16
Q7008
MPD784225GC-249-8BT
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 67 68 69 70 71 72 73 74 75 76 77 78 79 80
Q710
NC
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
3A 10
3B 9
3Y 8
4A 13
4B 12
4Y 11
GND 7
VCC 14
D7702 UDZ6.2B
D9508
UDZ27D
Q7007
KRC104S
OR RN1404
Q7006 KRC104S
OR RN1404
Q7001
KRC104S
RN1404
Q317
NC
Q319
NC
Q318
NC
R743
NC
R744
NC
R745
NC
R7000
100
R187
R186
R182 NC
R183
NC
R185
R184
NC
R747
NC
R742 NC
R740
NC
R9508
15K
R9509
100K
R9506
22
1/2W
R9507
15K
Q703
NC
A0
20 A1
19
A10
31
A11
1
A12
1
2
A13
4
A14
1
1
A15
7
A16
1
0
A2
18 A3
17
A4
16
A5
15
A6
14
A7
13
A8
3
A9
2
CE2
6
GND
24 IO1
21 IO2
22 IO3
23 IO4
25
IO5
26
IO6
27
IO7
28
IO8
29
NC
9
VCC
8
CE1
30
OE
32
WE
5
TVDD
DVDD
VCOM
DFZ1
LOUT3
ROUT3
LOUT2
ROUT2
LOUT1
ROUT1
LIN
RIN
PVDD
VREFH
AVDD
AVSS DFZ2
CSN
CCLK
CDTI
CDTO
INT1 INT0
SDTI3 SDTI2
PDN RX1 I2C RX2 TST RX3 SLAVE RX4 PVSS R
SDTO
BICK
LRCK
MCKO
TX
DVSS
XTI
XTO
Q801
AK4586
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
Q701
CS493264-CL
A0/SCCLK
7
A1/SCDIN
6
AUDATA0
41
AUDATA1
40
AUDATA2 39
CLKIN 30
CLKSEL 31
CMPCLK/SCLKN2
28
CMPDAT/RCV958/SDATAN2
27
CMPREQ/
LRCLKN2
29 DATA0 17
DATA1 16
DATA2 15
DATA3 14
DATA4 11
DATA5 10
DATA6 9
DATA7 8 DC 38
DD 37
FILT1 33
FILT2 32
LRCKN1
26
LRCLK
42
MCLK
44
SCDIO/SCDOUT
19
SCLK
43
SCLKN1/STCCLK2
25
SDTAN1
22
VDD1
1
VDD2 12
VDD3
23
VDDA 34
VSS1
2
VSS2 13
VSS3
24
VSSA 35
XMT958
3
ABOOT/_INTREQ
20
CS
18
EXTMEM
21
RD/R/_W
5
RESET 36
WR/DA
4
P7701
NC*
TO RS232C
X7001
CSTCV12.5MXJ
X701 CSTCV12.2MTJ0C4
L7002
022M
NCH-1471
L7001 470K
NCH-1479
L703
470M
NCH-1479
L706
BK1608LM182
L705
BK1608LM182
L181
L804 022M
NCH-1471
L801
022M
L802
022M
L803
022M
L704
022M NCH-1471
L701
022M
NCH-1471
L702
022M NCH1471
X181
NC
X801 HC-49/U03C
12.288M
Q707
TC7WU04FU
GND 4
1
6 3
7 2
5
8
Q7002
TC74VHC541FT
A1
2
A2
3
A3
4
A4
5
A5
6
A6
7
A7
8
A8
9
GND
1
0
VCC
20
Y1
18
Y2
17
Y3
16
Y4
15
Y5
14
Y6
13
Y7
12
Y8
11
G1
1
G2
19
Q706
NC
1CK 3
1D 2
1Q 5
2CK 11
2D 12
2Q 9
GND 7
VCC 14
1CLR 1
1PR 4
1Q 6
2CLR 13
2PR 10
2Q 8
Q704
NC
NC
0D 2 0Q 19
1D 3 1Q 18
2D 4 2Q 17
3D 5 3Q 16
4D 6 4Q 15
5D 7 5Q 14
6D 8 6Q 13
7D 9 7Q 12
CK 11 GND 10
OUTCTL 1 VCC 20
Q705
NC
0D 2 0Q 19
1D 3 1Q 18
2D 4 2Q 17
3D 5 3Q 16
4D 6 4Q 15
5D 7 5Q 14
6D 8 6Q 13
7D 9 7Q 12
CK 11 GND 10
OUTCTL 1 20
Q304
13
1 2 5 4 3 6
8 9
12 11 10
GND
7
VCC
14
Q303
13
1 2 5 4 3 6
8 9
12 11 10
GND
7
VCC
14
LOGIC
BASS BOOST
DA
CL
MUT
VEE
VCC
BASS
TREBLE
47k 47k 47k 47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k
47k 47k 47k 47k
47k
Q301
BD3811K1
29
70
32
41
44
49
51
53
54
67
56
58
62
60
61
59
47
46
45
66 69
33 40
43
30
10
77 78
21
22
79 80
23
24
1
2
3
4
5
6
7
8
9
11
12
27 26 25 28
15
14
13
16
48
55
19
20
57
17
18
36 37 38 35
71 72 73 74 75 76
63
64
52
50
65 68
34 39
42
31
C9503
104J
C375 472J
C373
472J
C374
472J
C372 472J
C371 472J
C376 472J
C6401
104J
C9502
104J
C9501
104J
C849 153J
C841 822J
C344
C342
C343
C341
C339
C338
563J
C337
C340
563J
P351
Q306
OR KRA102S
RN2402
Q314
NC
Q316
NC
Q315
NC
Q307
RN1441
Q311
NO USE
NC
Q310 NO USE
NC
Q309
NC
Q308 RN1441
Q312
RN1441
Q313
RN1441
C7010
104Z
C360 474K C361 224K
C816
104Z
D9512
D9504
D9505
D7003
D9511
D9510
D9509
D9506
1SR154-400
D9507
1SR154-400
D9502
D9503
D9502-9505: RL1N4003
D801
D802
D7002
D7004
1SS352
D7001
C7015 47/16
C7011 47/16
C7012 47/16
C101 3.3/50
C859
10/16
C858
10/16
C353
47/16
C354
47/16
C358
47/16
C357
NC
C356
NC
C355
NC
C854
10/16
C855
47/16
C856
10/16
C857
10/16
C832
10/16
C362
10/16
C349
10/16
C184
NC
C181 NC
C103
3.3/50
C359 10/16
C6412
10/16
C6410
10/16
C6404
10/16
C6406
10/16
C9508
4700/16
C9510
220/63
C9507
220/35
C9506
470/35
C9505
2200/35
C833
10/16
C836
10/16
C837
10/16
C834
10/16
C835
10/16
C809 10/16
C806
220/6.3
C364
10/16
C363
10/16
C801
47/16
C810 47/16
C7005
100/6.3
C7004 1/50
C7002
100/6.3
C7001
104F
C716
100/6.3
C706
100/6.3
C731
NC
C348
C347
C331 10/16
C329
10/16
C330
10/16
C332
10/16
C333
10/16
C334
10/16
Q305
OR MPC4570
NJM4565M
3
2
4
1
Q302
OR MPC4570
NJM4565M
3
2
4
1
Q802
NJM4565M
5
6
4
7
Q804
NJM4565M
5
6
4
7
Q803
NJM4565M
5
6
4
7
Q305
OR MPC4570
NJM4565M
5
8
6
7
Q302
OR MPC4570
NJM4565M
5
8
6
7
Q802
NJM4565M
3
8
2
1
Q804
NJM4565M
3
8
2
1
Q803
NJM4565M
3
8
2
1
R801 47
NC
R803 47
R713
47
R714
330
R715
330
R716
330
R717
330
R7138
22K
R7839 22K
R103
22K
R102
22K
R347
10K
R348
10K
R7180
R7179
R7178
R7080
INIT3
R7004
BAND
R366
R365
R364
10K
R363
10K
R316
330
R318
330
R320
330
R339
R321
330
R343
R342
R319
330
R341
R340
R317
330
R338
R310
330
R314
330
R312
330
R333 R311
330
R332
R315
330
R337
R336
R313
330
R335
R334
R304
330
R300
330
R302
330
R306
330
R307
330
R324
R301
330
R323
R322
R303
330
R325
R327
R329
R328
R305
330
R326
R359
NC
R360
NC
R372
R331
470
R371
R330
470
R397
NC
R396
NC
R344
R373
470
R374
470
R375 470
R376
270
R7141
10K
R7041 10K
R821
470
R387 NC
R386
NC R358 NC
R368
47K
R367
1K
R369
2.2K
R370
22K
R383 10K
R7083
220
R7085
220
R7084
220
R7082
220
R7081
220
R7075
220
R7074
220
R7073
220
R7072
220
R7070
220
R7069
220
R7068
220
R7067
220
R181 NC
R7134
1K
R7034
470
R7035
220
R7037
220
R7032
220
R7031
220
R7038
2.2K
R7040
220
R7039
2.2K
R7036
220
R104 100K
R105 NC
R7030
220
R7029
220
R7028
220
R7027
220
R357 NC R353
NC
R6410
2.2 1/2W
R6408
R6403
33 1/2W
R6402
10 1/2W
R6407
3.3 1W
R379
22K
R378
22K
R377
22K
R381
22K
R380
22K
R384
220K
R385
100
R382
22K
R388
100
R393
NC
R395
NC
R394 NC
R392 NC
R390 NC
R391 NC
R389
NC
R356
NC
R354
NC
R352 NC R350 NC
R349 NC R351 NC
R355
NC
R361 10K
R362 10K
R7079
INIT2
R7078
INIT1
R7077
R7055 220
R7054 220
R7062
220K
R346
NC
R345 NC
R816
330
R832 100K
R833 100K
R840
2.2K
R841
2.2K
R848
2.2K
R849
2.2K
R844
2.2K
R835 100K
R834
100K
R836 100K
R837
100K
R845
2.2K
R852
2.2K
R853
2.2K
R842
2.2K
R843
2.2K
R850
2.2K
R851
2.2K
R809
1K
R810
1K
R811
220
R812
220
R813
220
R814
220
R807
47
R808
47
R817
330
R818
330
R819
330
R
820
10K
R804 47
R805 47
R806 47
R815
18K
R106
NC
R739 1M
R729
47
R7033 47K
R7060 47K
R7120 1K
R7043 220
R7059 220
R7058
1K
R7057
1K
R7056
1K
R7052
1K
R7053 220
R7047 220
R7051
1K
R7050 1K
R7049 1K
R7046
1K
R7048 220
R7045
1K
R7044 1K
R7042 220
R7071
4.7K
R7066
1K
R7076
R7065
1K
R7064
1K
R7063
1K
R7026
220
R7025
220
R7024
220
R7023
220
R7022
220
R7021
2.2K
R7020 220
R7019 220
R7018 82
R7017 82
R7016 82
R7015 82
R7012 220
R7011 1K
R7003
R7002 2.2K
R7001 2.2K
R746
10
R750
10
R749
10
R748
NC
R751
NC
R752
NC
R753 NC
R754
NC
R755
NC
R756
NC
R757
NC
R719 330
R703 4.7K
R711 10K
R709 10K
R710 10K
R732 NC
R731
NC
R712
47
R704
10K
R705 330
R702
330
R701
47 R730
R728
47
R727
47
R726
47
R733 NC
R734 NC
R735 NC
R736NC
R737NC
R738 NC
R708
220
R707
220
R706
220
R720 47
R721 4.7K
R722 1K
R723 4.7K
R724 4.7K
R725 47
R718
33K
C7014
104Z
C322
104Z
C308
103Z
C732
NC
C726
NC
C727
NC
C728
NC
C707 104Z
C6405
223Z
C7009
104Z
C321
C320
C319
C318
C317
C316
C311
C310
C315
C314
C313 101J
C312 101J
C302 101J
C301
C300
C303 101J
C307
C306
C305
C304
C326
104Z
C325
104Z
C323
104Z
C188
NC
C106 101J
C183
NC
C7006
104Z
C817
150J
C803 150J
C350 221J
C351
330J
C182
NC
C185
NC
C187
NC
C186
NC
C365
222J
C336 332J
C335
332J
C729
NC
C104 101J
C105
NC
C848 152J
C840 821J
C6411
223Z
C6409
223Z
C6403
223Z
C367 104Z
C366 104Z
C9511
223Z
C9512
223Z
C352
SUB WOOFER
PREOUT
104Z
C327 330J
C328 330J
C808
104Z
C800
330J
C812 330J
C850 152J
C851 152J
C852
152J
C853 152J
C845 821J
C844 821J
C843 821J
C842 821J
C807
104Z
C811 104Z
C805 104Z
C804
104Z
C802 150J
C815 102K
C814 330J C813 330J
C715 104Z
C7007 104Z
C7008
104Z
C7003
104Z
C717 NC
C712 104Z
C703 104Z
C705
101J
C702
101J
C701
101J
C714 104Z
C730
NC
C709 105K
C704
101J
C710 105K
C711 471J
C713 101J
C708
103K
C720
NC
C721
C722
NC
C346
C345
+22V
SEC1-1
GND
+7V
SEC1-2
CDR SEC3-1
+12VAF SEC3-2
-VP
-7V
+12VVD
DET
CDL
SD
TMUT
TUR TUL
TX
RX1 RX2 RX3
5.6S
+12VAF +5VDSP
FMSIG
VMUT1 VMUT2
CTLB CTLA
PLLCL PLLDA
PLLSTB
+5VDSP
RI
TOR
-12VAF
STEREO
TUL
TUR
TOL POWER
+12VVD
SPF
V1OL V1OR
TOL TOR
GND
V4R V4L TUL TUR TIR SPCS
+22V
SEC1H
STEREO
-22V SPB
+5VDSP
VOLH
CDR
TIL PROTECT
CDL GND
TMUT
PLLCL PLLDA PLLSTB
CTLB CTLA POWER
SPF
SPCS SD
VMUT1 VMUT2 SEC1H
SPB
TIR
RDSDET
V3IR
TIL HPIN
+13V
V3IR
V3IL
RI
V2IR
V3IL
HPIN
V2IL
OUT_L
MCRDY
V1IR
AMUT
MCSDA
V1IL
SELMUT
HPMUT
OUT_R
MCMDA
DVDR SELCK MCRST
MCCLK
DVDL
SELDA
MCCLK
OUT_L
MCRST
MRS +7V SNONE MCMDA
HPMUT
MLS SWNONE MCSDA
-VP
MSW -7V CNONE MCRDY
V2IR
MC
DIRCS
ADCL SELMUT DSPCS
MCRDY
SELCK
ROM/RAM
232TXD
IC
ADCR SELDA A151 232RXD
OUT_R FVCC
V2IL
LPO
A161
MPURST
GND
DAC_R A171
MCCLK
V1OR OUT_RS
RPO
DMIXR DSPSCK
MCMDA
DAC_L DSPDO
MCSDA
RSPO
DMIXL
DSPRST
GND
CDTO/SCDO
V1OL
OUT_LS LSPO
INT1
OUT_C
INT0
V1IR
CPO
DIRPD VOLH
OUT_LS OUT_RS
DAC_RS DAC_LS DAC_SW DAC_C
OUT_C
OUT_SW
PROTECT
OUT_SW
V1IL
OUT_C
DVDR
POFF
+12VAF
DAC_SW
DAC_LS
DAC_C
RDSSCK
SWPO
INTREQ1
DVDL
SNONE
SWNONE
MRS
+7V
-12VAF
AMUT
MLS
RDSDATA
RDSSIG
MSW
SNONE
-7V
MC
CNONE
DAC_L
SWNONE
DAC_RS DAC_C
DAC_SW
CDTO/SCDO
INT1 INT0
CNONE
INT0[L] INT1[L]
RDSDET
DSPCS1[L]
FMEM/SRAM1[L]
A151[L] A161[L] A171[L]
DSPDA[3.3V]
DSPRST1[L]
CDTO/SCDO[L]
+5VDSP
DSPCL[3.3V]
+7V
+3.3V
DSPCS1[L] INTREQ1
CDTO/SCDO[L]
A0 A8
A1 A9
A2 A10
A3 A11
A4 A12
RD
A5 A13
EXTMEM
RD
DSPMCK
BCK
SDTO LRCK
BCK SDTO
A6 A14
A16
A7 A15
GND
-7V +7V
RD RD
DAC_C
CDTO/SCDO[L]
DIRCS DSPSCK DSPDO
INT1[L] INT0[L]
+3.3V
DAC_SW GND
LRCK
CDA
DSPMCK
SRDA
LRDA
A12 A4 A5 A6 A7
_WEF
A14 A8 A9
WE
SDTO
A13 A11
A4 A5 A6 A7 A12 A15 A16 A14 A13 A8 A9 A11
BCK
LRCK
DAC_LS MCK2
A0 IO2 IO3
FMEM/SRAM1[L]
A3 A2 A1 A0 IO0 IO1 IO2 IO3 IO4 IO5 IO6 IO7
A3 A2 A1 IO0 IO1 IO4 IO5 IO6 IO7 A10
A10
DSPRST1[L]
A171[L] A161[L] A151[L]
DAC_RS
+2.5V
+5VDSP
DSPCL[3.3V]
LRDA
MCK2
DAC_L
DIRPD
GND
WE
RD
DSPDA[3.3V]
RX3 RX2
+5VDSP
RX1
TX
DAC_R
ADCL
ADCR
NO USE
U01
PRE-AMPLIFIER PC BOARD
GND
GND
GND GND GND GND GND
NC
NC
VCC
VCC
0
NC
NC
NC
NC
NC
NC
NC
NC
NC
1K
47K
47K
NC
1K
1K
NC
NC
100/16
100/16 NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NCNC
NC
NC
NC
NC
NC
10K
33K
2SA950Y
or O
NC
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
!
NOTE
<Note>
NC=No mount of parts.
101
101
101J
101J
101J
101J
101J
101J
101J
101J
101J
101J
101J
101J
101J
101J
DESCRIPTION
R7078 33K
R7079 33K
R7080 33K
R7178 56K
R7179 10K
R7180 56K
REF. NO.
Refer to following table about
the parts displayed by mark " ".
23
NADG-7401
SDRI 11
A
1
2
3
4
5
B C D E F G H