Sony CX-JT8 / JAX-PK8 / JAX-T8 Service Manual ▷ View online
CX-JT8
37
37
R233
R425
R424
CN309
C402
C202
C201
C203
C204
C237
C244
C232
C266
C248
C267
R267
C269
R271
C273
C247
C249
C254
R284
C253
R278
R270
R282
R215
C260
C258
R287
R288
C259
R235
R286
R232
R234
C261
C285
R285
Q228
C240
R253
R246
C221
R245
R273
R269
R241
R242
D206
R251
R353
R352
R455
R406
R426
R466
D305
C392
C391
C390
R485
R430
R368
IC310
R272
R400
R401
R402
R404
R405
R412
R413
C401
R486
R418
R417
R416
R415
R419
R414
R407
R408
R409
R410
D306
R216
C250
C272
CN203
HP1
HPRE1
D101
C234
R226
C226
C286
C233
C225
R225
C242
C241
C223
Q223
Q221
Q218
Q225
Q222
R260
IC201
GA1
JR309
JR308
JR307
JR306
JR305
JR304
JR303
R307
R231
R266
C268
IC309
R420
C450
JR316
Q220
Q219
L201
R268
R265
C239
R252
D205
R283
R220
CN202
D324
22k
22k
22k
12P
0.1
1000p
1000p
1000p
1000p
1 50V
47 16V
47
16V
0.01
2.2
50V
50V
0.01
4.7k
1
50V
10k
1 50V
2.2
50V
2.2
50V
50V
4.7
50V
50V
10k
100
16V
16V
22k
10k
100
4.7k
0.47
50V
4.7
50V
50V
10k
10k
22
25V
10k
10k
2.2k
22k
0.47
50V
2200p
10k
2SB1116
10
50V
10k
47k
47
16V
10k
10k
10k
4.7k
4.7k
1SS355
4.7
11k
11k
11k
22k
22k
22k
1SS355
100p
100p
100p
100
10k
100
BU2099FV
10k
10k
10k
10k
10k
10k
10k
10k
0.1
100
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
1SS355
4.7k
2.2
50V
50V
1 50V
3P
1SS355
1000p
10k
2200p
2200p
1000p
2200p
10k
0.0047
0.0047
0.022
100V
2SC2001
2SC3052F
2SC3052F
2SA1235F
2SC3052F
220
HA12237F
0
0
0
0
0
0
0
100
2.2k
4.7k
1
50V
BU2099FV
10k
10
50V
0
2SC3052F
2SC3052F
4.7k
4.7k
0.015
22k
1SS355
10k
10k
8P
1SS355
A1
A2
A3
A4
A5
A6
A7
E1
E2
E3
19
20
21
22
23
24
18
SP-F
LINK
CD-EN
TUMUTE
S-OUT
CLK
LCK
TBL-SENSE
V-BASS
PB-EQ(R)
TAI(R)
EQOUT(R)
PB-OUT(R)
REC-IN(R)
ALC(R)
REC-OUT(R)
VCC
ALC-DET
GND
IREF
TEST
ALC(L)
REC-IN(L)
PB-OUT(L)
TAI(L)
EQOUT(L)
PB-EQ(L) PB-NF2(L)
PB-NF1(L)
AIN(L)
RIP
BIN(L)
REC-RETURN
GND
BIN(R)
AIN(R)
PB-NF1(R)
(R)
PB-NF2
GND
LM-R
LM-F
TM-R
TM-F
TBL ADDRESS SENS
D+3.3V
M+9V
OPEN SW
SO
VDD
VSS
DATA
CLOCK
LCK
SO
VDD
VSS
DATA
CLOCK
LCK
(2/4)
(PB)
(DECK-A)
ERASE
(DECK-B)
(REC/PB/ERASE)
L-CH
R-CH
R-CH
L-CH
(AEP,UK)
BIAS OSC
BIAS OSC
MUTING
MUTING
MUTING
MUTING
SWITCH
REC ON/OFF
Q222,225
SWITCH
REC BIAS
NC
NC
REC-OUT
(L)
ON
RECMUTE-
/OFF
OFF
MUTE-ON/
B
A/
/HI
NOR
OFF
ALC-ON/
NC
NC
NC
REC/PB EQ AMP
(CHASSIS)
E-1
E-2
E-3
NC
NC
NC
NC
CTRL3
CTRL2
CTRL1
OE
NC
BB CTRL1
BB CTRL2
BB CTRL4
BB CTRL3
BASS BOOST CONTROLLER
MULTI CONTROLLER
NC
OE
REC
BIAS
A/ B
PB MUTE
REC MUTE
REAR SP
/OFF
ON
FRONT SP
TM-L(CD)
TM-R(CD)
LM-L(CD)
LM-R(CD)
TUNER
MUTE
/OFF
ON
DECK A/B SELECT SWITCH,
I-BASS
B2
6-16. SCHEMATIC DIAGRAM – MAIN Board (2/4) (Suffix-13) –
•
See page 52 for IC Block Diagram.
•
See page 52 for Waveforms.
(Page 29)
(Page
36)
(Page 39)
CX-JT8
38
38
6-17. SCHEMATIC DIAGRAM – MAIN Board (3/4) (Suffix-13) –
•
See page 52 for IC Block Diagram.
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
CN311
CN312
CN306
CN310
C385
R335
R493
C491
C315
R492
R491
R494
C492
C384
R495
R300
C341
C367
C396
R421
C400
R333
R334
R479
R337
R467
Q314
R362
R361
R366
R367
R480
R363
C330
C316
R347
C439
C329
R364
C340
R338
R339
D311
C370
C369
JR333
C386
Q327
Q328
R392
R315
Q372
C379
C377
R359
R371
R372
R391
D372
D371
D374
C398
R461
R460
D312
Q373
R433
R434
Q491
Q492
Q304
Q323
IC303
JR336
CN303
M731
R470
R393
R370
C440
JR339
JR341
C383
C382
R332
R468
R394
C448
JR343
R299
R390
R498
R499
C447
C358
R341
Q315
Q316
JR337
R375
R340
R403
R478
R331
Q318
Q317
Q319
Q320
R336
9P
19P
13P
5P
0.033
56k
100k
0.015
4.7
50V
50V
220k
220k
220k
1
50V
0.033
22k
4.7k
47
16V
0.22
0.22
10k
22
25V
10k
8.2k
47k
1.5k
1.5k
2SK2158
22k
5.6k
270
4.7k
10k
22k
4.7
50V
50V
4.7
50V
50V
4.7k
4.7
100V
4.7
50V
50V
100k
47
16V
4.7k
1k
1SS355
10
50V
10
50V
0
47
25V
2SA1235F
2SA953K
220
10k
2SC3052F
47
25V
4.7
50V
50V
470k
4.7k
4.7k
47k
1SS355
1SS355
1SS355
10
50V
2.2k
2.2k
UDZSTE-1713B
2SC2001LK
680
2W
680
2W
2SC3052F
2SK2158
2SA953K
2SC3052
NJM2156
0
3P
3.3k
10k
10k
4.7
100V
0
0
3300p
3300p
47k
82k
10
0.1
0
10k
10k
10k
10k
47p
1000p
10k
2SK2158
2SK2158
0
2.2k
2SK2158
2SK2158
2SK2158
2SK2158
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
ZZ1
ZZ2
ZZ3
ZZ4
ZZ5
ZZ6
ZZ7
ZZ8
ZZ1
ZZ2
ZZ3
ZZ4
ZZ5
ZZ6
ZZ7
ZZ8
CD-MUTE
V-BASS
18
19
20
HP
21
22
23
24
SP-F
LINK
∗
∗
∗
∗
HP CTL
D GND
R-OUT
HP-GND
L-OUT
FAN+
FAN-
FAN+
L-OUT
SP-GND
R-OUT
VM(AC)
VM(AC)
VCC
LINK/MATRIX
P-GND
L-CH
A-GND
PW-GND
A-GND
RELAY B+
P+7.0V
CD DRF
GND
GOUT
GIN
VREF
OUTB
LOUTB
LINB
HOUTB
HINB
INB
HOUTA
HINA
INA
LINA
LOUTA
OUTA
BBE
LPOUT
LPIN
V+
(3/4)
SWITCH
FEED BACK
BASS BOOST
CONTROL
Q327,328,372,373
FAN MOTOR ON/OFF SWITCH
ON/OFF
SPEAKER
FRONT
BASS BOOST
CONTROL
Q317-320
BASS BOOST ON/OFF SWITCH
BASS BOOST
ENHANCER
Q314-316
FERQUENCY
CONTROL
UNREG VM
IN-L
IN-R
(FAN)
D-GND
AMUTE
D.OUT
3.3V
3.3V
CD_RES
DI
DO
CL
MP3_CE
FSYNC
CD_WRQ
DRF
CD_CE
LC78646 CE
LC78646 WRQ
LC78684 SYNC
LC78646/LC78684 CLK
LC78646/LC78684 DO
LC78646/LC78684 DI
LC78646 RESET
R-CH
LC78684 CE(MP3)
RELAY
DRIVE
∗
10k (AEP,UK,CIS)
∗
5.6k
10k (AEP,UK,CIS)
R375
4.7k
R340
(AEP,UK,CIS)
820
1.5k
(E,E51,SP,AUS)
(E,E51,SP,AUS)
∗
(AEP,UK,CIS)
R331
1.5k
3.3k (E,E51,SP,AUS)
(E,E51,SP,AUS)
(E,E51,SP,AUS)
(AEP,UK,CIS)
18k
27k (E,E51,SP,AUS)
D2
A2
E2
C2
(Page
27)
(Page 36)
(Page 39)
(Page
42)
(Page
45)
(Page
47)
CX-JT8
39
39
6-18. SCHEMATIC DIAGRAM – MAIN Board (4/4) (Suffix-13) –
R484
CN304
D315
D313
CN307
R346
R387
C397
R386
R388
C345
C372
D
3
6
4
R
43
1
R379
D314
R482
R481
C399
C419
C418
D321
D322
C375
C374
C373
D301
D302
C380
C381
D304
D303
C420
C421
R378
D319
D320
R483
R314
C363
IC304
R313
R432
C339
C364
D307
C371
JR334
R427
R428
R487
R488
IC305
IC306
IC308
IC313
C417
D308
Q331
Q330
D316
Q324
R348
R384
JR321
JR328
JR326
JR317
R309
C437
C438
Q301
Q302
R310
D318
D323
10k
31P
10EDB40-TB3
10EDB40-TB3
13P
22k
12k
100
10V
10V
10k
1k
100
16V
16V
10
50V
1S
S
3
5
5
1
5
0
k
2.2k
10EDB40-TB3
4.7k
4.7k
470
16V
16V
0.01
0.01
10EDB40-TB3
10EDB40-TB3
2200
25V
0.01
0.01
10EDB40-TB3
10EDB40-TB3
470
16V
16V
47
16V
10EDB40-TB3
10EDB40-TB3
2200
25V
220
16V
16V
10k
10EDB40-TB3
10EDB40-TB3
1k
100k
10
50V
NJM4565M
100k
100
220
16V
16V
10
50V
1SS355
47
16V
0
0
0
0
0
TA7809S
TA7809S
TA7810S
1000
10V
0
2SA1235F
2SC3052F
10EDB40-TB3
2SC3052F
0
1k
0
0
0
0
0
220p
220p
2SA1980G
2SC3052F
0
C
2
C
1
C
3
C
4
C
5
E
1
E
2
E
3
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
MIC-S
MIC-SIG
FIL2
FIL1
-VFL
EVER+10V
MIC+10V
+4V
RCLK
RDATA
ST
TUNED
CE
DO
DI
CLK
MCLK
LCK
TBL-SENSE
CD-EN
S-MUTE
VACS/STR
DECK+9V
HOLD
O-POWER
S-OUT
MIC10V
HP
MIC-S
O-POWER
HOLD
S-MUTE
FIL1
FIL2
EVER+10V
-VFL
O-POWER
DECK+9V
O-POWER
+4V
SYSTEM MUTE
DC-DET
VM+10V
HOLD
SW OUT
-VFL
VSTBY
FIL-2
FIL-1
SW LIMIT
P-0N
D-GND
-VFL
EVER 10V
MIC 10V
4V(SW)
BU1924 CLK
BU1924 DATA
TUNER STEREO
LC72121 CE
LC72121 DI
M61529 CLK
BU2099FB LCK
POWER RELAY
PROTECTOR (HOLDER)
STREAM IN(VACS)
SYSTEM MUTE
S-OUT
MIC GND
(4/4)
VF1
VF2
TUNER TUNED
LC72121/M61529/BU2099FV DO
LC72121/BU2099FV CLK
CD NUMBER SENS
BU UP DOWN/CD OPEN CLOSE
NC
TUNER S-METER
DECK 9V
MIC SIG
HP
A-GND
SW ON/OFF SENS
O-POWER
I
O
G
I
O
G
I
O
G
I
O
G
+9V REGULATOR
+9V REGULATOR
+10V REGULATOR
+4V REGULATOR
Q330,331
POWER ON/OFF
RELAY DRIVE
Q301,302
B+ SWITCH
CENTER
VOLTAGE
GENERATOR
(AEP,UK)
BUFFER
(AEP,UK)
VCC
GND
(E,E51,SP,AUS)
µPC3504HF
G2
F2
(Page 36)
(Page 37)
(Page 38)
(Page 47)
(Page 42)
CX-JT8
40
40
JW540
C37
C41
C34
C529
RY501
CN501
CN502
C11
C12
JW544
JW571
JW577
JW578
JW579
JW580
JW581
JW585
JW586
JW28
JW29
JW30
JW34
JW38
JW39
JW40
JW41
JW43
JW53
JW58
JW59
JW587
C14
C22
C23
C24
C531
Q535
Q533
Q534
JW545
Q18
Q19
L501
JW47
Q512
Q514
C512
R502
R504
C511
Q511
Q513
R501
C514
C518
C522
C521
C513
C517
C33
EP501
JW511
JW514
JW521
JW523
JW528
JW532
JW525
JW527
JW531
D41
JW42
JW583
JW584
JW56
JW57
JW529
JW524
JW530
JW512
JW574
JW573
D506
L502
EP502
JW9
R570
R571
JW15
JW10
JW45
JW538
JW537
JW539
JW14
JW18
JW25
JW26
JW60
JW61
JW62
JW63
JW555
JW64
D42
JW519
JW526
JW517
JW588
JW546
CN1
EP01
JW575
JW52
JW37
JW36
JW44
C18
C19
JW33
JW35
JW54
JW31
JW55
JW32
R595
R597
JW513
R596
R598
JW534
JW3
JW547
JW549
JW548
JW65
JW68
JW69
JW72
JW73
JW74
JW75
JW589
JW591
JW594
JW595
JW533
JW542
JW554
JW535
JW536
JW550
JW582
JW590
JW556
JW522
JW67
JW66
JW71
JW70
JW20
C540
JW23
JW76
JW77
JW515
JW541
JW543
JW592
JW593
D2
JW27
JW21
JW24
JW50
D1
JW78
R55
R81
D505
R538
R537
JW520
JW46
JW2
JW1
R56
JW17
R92
R95
R86
R99
JW516
JW51
JW48
Q504
Q502
Q503
Q501
Q527
C530
R561
R562
R592
R576
R575
R577
R566
R1
C5
C6
C7
JR514
JR515
JR516
R32
R34
R35
R36
R33
R37
D16
D17
D12
D13
Q8
R17
R21
R16
R20
R6
R7
R8
R9
R10
R19
R22
Q9
R23
R11
R12
R14
R18
R4
Q7
R40 R38
Q536
R581
R563
R564
R567
R568
R580
R83
R58
R78
Q17
R72
R79
TH502
R516
C504 R524
R522
R518
R520
Q516
R526
R528
C506
C508
Q520
Q524
Q518
Q522
R534
R536
C510
R532
R530
D502
D504
R542
R544
R546
C503
C505
C507
C509
D503
D501
Q515
Q519
Q523
Q517
Q521
R515
R523
R521
R517
R519
R525
R527
R533
R535
R531
R529
R541
R543
R545
TH501
R505
R507
R509
C501
Q505
R511
R513
R506
R508
Q506
C502
R510
R512
R514
Q10
Q11
D509
R52 R51
R50
C25
Q12
Q13
C26
D20
R46
R49
R48
R47
D19
D18
R550
R554
R556
C520
R560
Q526
R558
C538
D510
R540
R559
Q525
R549
C519
R555
R553
C35
C36
Q20
R82
R85
R76
Q21
R93
R91
R71
Q22
R60
C42
Q23
R59
Q24
C43
R70
R75
R94
R96
R54
R41
R77
R69
C40
R53
R43
R26
R27
C45
R42
C30
R64
R62
R98
C31
R61
R63
R97
C523
JR511
JR512
R65
R66
R67
R68
R73
D39
D40
R13
D11
D511
D24
D513
R569
R591
D514
R90
R548
D508
Q510
D507
R539
R547
R557
Q509
Q507
R45
Q508
D31
D32
D37
D38
D30
D29
D23
D36
D25
D33
D34
D35
D515
C532
C533
C525
C534
C524
C526
R103
R104
R105
R106
R107
R108
R109
R110
R29
R100
R31
R586
R574
R578
R102
R44
R74
JR513
R573
R579
R572
R582
R587
JR517
R28
R39
C542
C544
C541
C543
Q529
Q532
R588
R599
R500
Q530
R601
R602
R603
R604
R593
R589
JR2
Q5
Q6
JR501
C8
R594
R503
RY502
JW16
D512
C15
JW552
JW551
C535
C527
(SUFFIX-11)
(SUFFIX-13)
E
E
E
E
C
B
E
E
C
B
E
E
E
C
B
E
E
E
E
E
E
C
B
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
POWER BOARD
1-688-759-
12
(12)
12
1
A
K
K
A
K
K
(CHASSIS)
4
1
E
E
E
4
1
13
1
13
1
E
K
A
A
A
K
K
S
D
G
S
D
G
A
A
K
E
E
A
A
K
K
K
A
A
A
K
A
A
K
K
K
A
E
K
K
A
(CHASSIS)
K
K
K
A
A
A
-1
-2
-1
-2
+
–
+
–
R
L
+
–
+
–
R
L
JK503
SURROUND
SPEAKER
FRONT
SPEAKER
(CHASSIS)
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
TRANSFORMER
BOARD
CN902
H1
MAIN BOARD
CN307
G1
MAIN BOARD
CN307
G2
(SUFFIX-11)
(SUFFIX-13)
MAIN BOARD
CN306
C1
MAIN BOARD
CN306
C2
6-19. PRINTED WIRING BOARD – POWER Board – (AEP, UK, CIS, E51 models)
•
See page 25 for Circuit Boards Location.
:Uses unleaded solder.
(Page 48)
(Page
35)
(Page
34)
(Page 34)
(Page 35)
Q9
D-5
Q10
H-9
Q11
H-9
Q12
I-9
Q13
I-8
Q17
D-8
Q18
D-7
Q19
D-8
Q20
F-8
Q21
F-7
Q22
E-8
Q23
F-8
Q24
F-8
Q501
E-9
Q502
G-9
Q503
F-9
Q504
H-9
Q505
D-9
Q506
F-9
Q507
E-9
Q508
G-9
Q509
E-9
Q510
G-9
Q511
G-8
Q512
H-8
Q513
G-8
Q514
I-9
Q515
G-8
Q516
H-8
Q517
G-8
Q518
H-8
Q519
G-8
Q520
H-8
Q521
G-8
Q522
H-8
Q523
G-8
Q524
H-8
Q525
G-8
Q526
H-7
Q527
D-7
Q529
B-8
Q530
C-6
Q532
B-8
Q533
B-3
Q534
A-4
Q535
B-4
Q536
B-4
D1
D-3
D2
B-3
D11
D-5
D12
D-4
D13
D-4
D16
D-1
D17
D-1
D18
H-9
D19
H-9
D20
I-8
D23
F-8
D24
D-7
D25
E-8
D29
F-8
D30
F-7
D31
F-8
D32
F-8
D33
E-8
D34
E-8
D35
E-8
D36
E-8
D37
F-8
D38
F-8
D39
D-6
D40
D-6
D41
E-8
D42
D-8
D501
F-8
D502
H-8
D503
G-8
D504
H-8
D505
G-8
D506
H-8
D507
G-8
D508
I-8
D509
G-9
D510
H-7
D511
D-8
D512
A-9
D513
B-7
D514
D-4
D515
B-3
Q5
D-4
Q6
D-4
Q7
D-5
Q8
D-5
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
Click on the first or last page to see other CX-JT8 / JAX-PK8 / JAX-T8 service manuals if exist.