Sony CX-JTV8 / JAX-TV8 Service Manual ▷ View online
CX-JTV8
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
C234
R226
C226
C286
C233
C225
R225
C242
C241
C223
Q223
Q221
Q218
Q225
Q222
R260
IC201
GA1
JR308
JR307
JR306
JR305
JR304
JR303
R307
R231
R266
C268
IC309
R420
C450
JR316
Q220
Q219
L201
R268
R265
C239
R252
D205
R283
CN202
D324
JR309
R453
R454
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
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
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
100
2.2k
4.7k
1
50V
BU2099FV
10k
10
50V
0
2SC3052F
2SC3052F
4.7k
4.7k
0.015
22k
1SS355
10k
8P
1SS355
0
10k
10k
A1
A2
A4
A5
A6
A7
E1
E2
E3
19
20
21
22
23
24
18
S
P
-F
LIN
K
CD-EN
TUMUTE
S-OUT
C
LK
LC
K
TBL-SENSE
V-BASS
26
25
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
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
CTRL3
CTRL2
CTRL1
OE
BB CTRL1
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
MUTE
CD
LINE OUT
MUTE
CTRL2
BB
6-15. SCHEMATIC DIAGRAM – MAIN Board (2/4) –
•
See page 40 for Waveforms.
•
See page 50 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
(
no mark : TUNER (FM/AM)
(
) : CD PLAY
[
] : TAPE PLAY (DECK-A)
{
} : TAPE PLAY (DECK-B)
〈〈
〉〉
: REC
(Page
36)
(Page 39)
(Page 31)
CX-JTV8
38
38
CN311
CN312
CN306
CN310
C385
R335
R493
C491
C315
R492
R491
R494
C492
C384
R495
R300
C341
C367
C396
R421
R333
R334
R479
R337
R467
R362
R361
R366
R367
R480
R363
C330
C316
R347
C439
C329
R364
C340
R338
D311
C370
C369
JR333
Q327
R392
R315
Q372
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
C383
C382
R332
R468
R394
C358
JR337
Q315
Q317
Q318
Q319
Q320
Q316
Q314
Q328
R403
R336
R341
C446
JR342
JR338
JR340
C379
C386
R339
R331
R478
R375
R340
C400
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
10k
8.2k
47k
1.5k
1.5k
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
1SS355
10
50V
10
50V
0
2SA1235F
220
10k
2SC3052F
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
2SK2541
2SA953K
2SC3052
NJM2156
0
3P
3.3k
10k
10k
4.7
100V
3300p
3300p
47k
82k
10
1000p
0
2SK2541
2SK2541
2SK2541
2SK2541
2SK2541
2SK2541
2SK2541
2SA1980G
820
27k
1k
470p
0
0
0
47
50V
47
50V
1k
3.3k
2.2k
4.7k
5.6k
22
25V
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
F1
F2
F3
F4
F5
F6
F7
F8
ZZ1
ZZ2
ZZ3
ZZ4
ZZ5
ZZ6
ZZ7
ZZ8
ZZ1
ZZ2
ZZ3
ZZ4
ZZ5
ZZ6
ZZ7
ZZ8
V-BASS
18
19
20
HP
21
22
23
24
SP-F
LINK
SW+5V
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
L-CH
A-GND
PW-GND
A-GND
RELAY B+
GND
G
O
UT
G
IN
VREF
O
UTB
LOUTB
LINB
HO
UTB
HINB
IN
B
HO
UTA
H
IN
A
IN
A
LINA
LO
U
TA
O
UTA
B
BE
LPOUT
LP
IN
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)
R-CH
RELAY
DRIVE
M+7V(UNSW)
M-GND
D+5V(SW)
D+5V(SW)
D-GND
D-GND
A+5V(SW)
SYS RST
SYS CLK
SYS RQ
N.C.
SYS OUT
SYS CS
VIDEO MUTE
O-SYS-CS
O-VIDEO-MUTE
O-VIDEO-SW
O-SYS-OK
O-SYS-REQ
O-SYS-CLK
O-SYS-OUT
O-SYS-IN
O-SYS-RES
SYS IN
SYS OK
6-16. SCHEMATIC DIAGRAM – MAIN Board (3/4) –
•
See page 50 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
(Page 39)
(Page
47)
(Page
32)
(Page
45)
(Page
42)
(Page 36)
CX-JTV8
39
39
R484
CN304
D315
D313
CN307
R346
R387
C397
R386
R388
C345
C372
D
364
R
43
1
R379
D314
R482
R481
C399
C419
C418
D321
D322
C375
C374
C373
D301
D302
C380
C381
C420
C421
R378
D319
D320
R483
R314
C363
IC304
R313
R432
C339
C364
D307
C371
R487
R488
IC305
IC306
IC308
IC313
D308
Q331
Q330
Q324
R348
R384
JR321
JR328
JR326
JR317
R309
Q301
Q302
R310
R427
R428
D325
JR327
D318
C441
D303
D304
R385
C343
IC307
Q367
Q313
R496
R389
Q303
R497
C347
JR334
10k
31P
10EDB40-TB3
10EDB40-TB3
13P
22k
12k
100
10V
10V
10k
1k
100
16V
16V
10
50V
1
SS355
15
0k
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
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
TA7809S
TA7809S
TA7810S
0
2SA1235F
2SC3052F
2SC3052F
0
R456
0
1k
0
0
0
0
0
2SA1980G
2SC3052F
0
0
0
0
0
11EQS04
0.22
4.7k
3300
6.3V
6.3V
2SD2012
2SA1235
4.7k
4.7k
2SC3052
4.7k
10
50V
0
C
2
C
1
C
3
C
4
C
5
E1
E
2
E3
F1
F2
F3
F4
F5
F6
F7
F8
FIL2
FIL1
-VFL
EVER+10V
MIC+10V
+4V
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
O-POWER
HOLD
S-MUTE
FIL1
FIL2
EVER+10V
-VFL
O-POW
ER
DECK+9V
O-POWER
+4V
MIC-SIG
SW+5V
∗
∗
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
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
BUFFER
VCC
GND
CD VCC
∗
D303,304
10EDB40-TB3 (EA)
11EQS04-TB5 (E,SP,MY)
I
O
G
+5V REGULATOR
µPC7805A
Q303,313,367
B+ SWITCH
µPC3504HF
R465
1000p
6-17. SCHEMATIC DIAGRAM – MAIN Board (4/4) –
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
(Page 38)
(Page 42)
(Page 47)
(Page 37)
(Page 36)
Ver 1.2
CX-JTV8
40
40
• Waveforms
– BD Board –
– BD Board –
1
IC103
qg
(RFAC) (CD Play Mode)
1.05
±
0.3 Vp-p
Approx.
250 mVp-p
250 mVp-p
2
IC103
qh
(FE) (CD Play Mode)
Approx.
350 mVp-p
350 mVp-p
3
IC103
qk
(TE) (CD Play Mode)
0.75
±
0.1 Vp-p
4
IC103
wk
(RFDC) (CD Play Mode)
– VMP42DN Board –
ea
IC504
1
(BCK), IC505
<x/c>
(AUDBCK)
3.3 Vp-p
474 ns
es
IC504
3
(LRCK),
IC505
<x/v>
(AUDLRCK)
2.7 Vp-p
22.7
µ
s
ed
IC504
qh
(MCLK),
IC505
<x/b>
(AUDXCLKO)
3.4 Vp-p
59.5 ns
ef
IC505
6
(CPSIG) (Video CD Play Mode)
580 mVp-p
H
2.1 Vp-p
H
eg
IC307
6
(BUF OUT)
(Video CD Play Mode)
eh
IC505
ij
(L CDLRCK),
ik
(LRCK)
2.7 Vp-p
22.7
µ
s
ej
IC505
os
(L CDBCK),
od
(BCK)
3.3 Vp-p
474 ns
ek
IC505
<zcc
(MDP) (CD Play Mode)
1.5 Vp-p
7.6
µ
s
el
IC505
<zb/
(XTAO)
3.3 Vp-p
29.5 ns
r;
IC505
<zn/
(RFDC) (CD Play Mode)
ra
IC505
<znx
(TE) (CD Play Mode)
rs
IC505
<znv
(FE) (CD Play Mode)
rd
IC505
<zmc
(RFAC) (CD Play Mode)
0.75
±
0.1 Vp-p
Approx.
350 mVp-p
350 mVp-p
Approx.
250 mVp-p
250 mVp-p
1.05
±
0.3 Vp-p
rf
IC505
<x/m
(CLKB)
2.9 Vp-p
37 ns
ws
IC901
qh
(CF2)
qs
Q223 (Collector) (REC Mode)
– MAIN Board –
qa
Q223 (Base) (REC Mode)
– PANEL Board –
wa
IC901
qd
(XT2)
1.7 Vp-p
11.3
µ
s
15.8 Vp-p
11.3
µ
s
1.7 Vp-p
30.5
µ
s
3 Vp-p
125 ns
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