Sony HCD-ZT4 / LBT-ZT4 Service Manual ▷ View online
HCD-ZT4
HCD-ZT4
33
33
• See page 34 for Waveforms. • See page 50 for IC Block Diagrams. • See page 52 for IC Pin Function Description.
7-11. SCHEMATIC DIAGRAM - USB Board -
M
5V REG
BOARD
NO050
BOARD
NO050
N
USB
BOARD
CONNECTOR
NO1001
K
MAIN
BOARD
(4/4)
CN420
11
R986
100
DATA
R985
100
CLOCK
C930
EP901
(CHASSIS)
0.33
C919
0.1
D903
D904
MAZ8068GMLS0
MAZ8068GMLS0
CLOCK
DATA
CLK
DATA
R970
R971
R972
R973
R974
R975
R976
R977
R979
R978
R932
R982
R984
RB922
RB921
RB923
RB924
C907
C906
C921
R901
C901
R937
R983
C902
JR902
C903
C922
R907
R906
R905
R904
R903
R902
R917
R915
R913
C908
R919
C909
R916
C910
C912
R944
R943
R942
R941
C905
C904
R933
R934
R938
C915
C913
C914
R981
R922
R924
R923
R921
IC921
R926
R925
C920
IC915
C916
R920
CN907
CN903
CN901
FB902
FB901
D902
C917
R945
R947
IC901
R928
D901
X901
R949
100
100
100
100
100
100
100
100
100
100
100
100
100
47
47
47
47
0.1
0.1
0.1
10k
0.1
100
100
10
16V
0
10
16V
0.1
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
0
10k
100k
0.1
100
22p
0
22p
10p
100k
100k
100k
100k
0.1
10
16V
0
10k
100
0.1
0.1
0.1
100
100k
27
27
100k
IS61LV6416-10T
15k
15k
0.33
C918
0.33
R5523N001BTR-F
0.1
10k
21P
5P
2P
4.7k
4.7k
0
9MHz
4.7k
A13
A14
A15
D0
D1
D2
D3
D4
D5
D6
D7
RD
WR
LB
UB
SRAM
-CS
A8
A9
A10
D7
D4
D5
D6
WR
D0
D1
D2
D3
SRAM-CS
A11
A12
A13
A14
A15
LB
UB
RD
A7
A8
A9
A10
A11
A12
A4
A5
A6
D12
D13
D14
D15
A4
A5
A6
D8
D9
D10
D11
D12
D13
D14
D15
BUS0
BUS1
BUS2
BUS3
BUCK
CCE
USB-SI
USB-SO
DO
USB-RST
LRC
K
BCK
REQ
ST-REQ
A-IN
GATE
LRCK
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
DO
DI
USB-SO
USB-SI
BCK
A-IN
GATE
REQ
ST-REQ
USB-RST
DI
A7
A16
A16
A1
A2
A3
A1
A2
A3
D11
D10
D9
D8
EN
FLG
EN
FLG
MC2837
220
6.3V
TMP92CD28AFG-7AC9
MC2837
D+
D-
AM0
DVSS
DVSS
RV
O
U
T
1
RV
IN
RV
IN
R
VOUT2
DVSS
DVSS
DVS
S
AM1
X2
DVSS
X1
USB+5V
DVDD+3.3V
DVSS
LRCK
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
USB-RST
ST-REQ
REQ
GATE
A-IN
BCK
GND
DI(CTS)
DO(RTS)
USB-SI(RXD)
USB-SO(TXD)
NC
A6
A5
A4
A3
NC
I/O8
I/O10
I/O11
VDD
GND
I/O12
I/O13
I/O14
I/O15
A2
A1
A0
I/O9
NC
A7
A8
A9
A10
I/O7
I/O6
I/O5
I/O4
GND
VDD
I/O3
I/O2
I/O1
I/O0
A11
A12
A13
A14
A15
WE
CE
LB
UB
OE
A13
GND
D+
D-
VBUS
EN
GND
OUT
IN
FLG
(USB)
S-RAM
VBUS POWER ON/OFF SWITCH
A12
A11
A10
A9
A8
DVCC
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
DVCC
D7
D6
D5
D4
D3
S2
D1
D0
DVS
S
DVCC
DVCC
DVS
S
NO USE
NO USE
NO USE
DVCC
G-3
NO USE
NO USE
DI
G-2
G-1
ST-REQ
REQ
DVCC
GATE
DATA
BCK
SCL
SDA
NO USE
RXD1
TXD1
CLOCK
DATA
DO
NO USE
USBPON
USBOC
DVCC
BOOT
NO USE
SRL
UB
SRL
LB
RD
WR
CS2
DVCC
NO USE
/CC
E
/BUCK
BUS3
BUS2
BUS1
BUS0
A16
A15
A14
USB CONTROLLER
LRC
K
/RESET
(Page 39)
(Page 47)
(Page 43)
HCD-ZT4
HCD-ZT4
34
34
•
: Uses unleaded solder.
• See page 27 for Circuit Boards Location.
7-12. PRINTED WIRING BOARD - DMPORT Board -
8
1
4
5
1
18
C1301
C1300
C1309
CN1302
TP1323
TP1317
TP1316
R1310
R1309
R1318
R1315
R1314
R1302
TP1315
TP1314
TP1313
TP1312
L1300
R1307
R1316
R1305 R1306
C1300
R1304
R1300
C1319
TP1326
TP1325
TP1322
TP1321
TP1320
TP1318
TP1324
TP1319
TP1311
TP1310
TP1308
TP1309
TP1307
TP1306
TP1305
TP1304
TP1303
TP1302
TP1301
TP1300
R1323
R1322
R1313
R1301
1
CN1301
11
C1304
C1303
C1302
C1318
C1315
C1314
C1310
A1300
1-875-679-
11
(11)
1-875-679-
11
(11)
DMPORT BOARD
(COMPONENT SIDE)
DMPORT BOARD
(CONDUCTOR SIDE)
DMPORT
AB
MAIN BOARD
CN490
A
B
1
2
3
4
5
7-13. SCHEMATIC DIAGRAM - DMPORT Board -
BOARD
MAIN
CN490
(1/4)
AB
4.5
9
4.5
4.5
4.5
4.5
4.5
22k
R1305
22k
R1315
100
R1309
C1300
0.1
100
R1310
8
7
6
5
4
3
2
1
NJM4558M-TE2
IC1300
V-
V+
R1302
4.7k
C1309
0.1
22k
R1314
22k
R1318
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
18P
CN1302
PGND
VBUS(5V)
NC
VIDEO(5V)
RXD
TXD
DET
DGND
WM DET
WM A/D
Lch-
Rch-
Lch+
Rch+
WM RX
WM TX
VIDEO
VGND
22k
R1313
22k
R1304
0.1
C1301
10uH
L1300
22k
R1306
22k
R1301
R1300
4.7k
1
2
3
4
5
6
7
8
9
10
11
11P
CN1301
CHASSIS GND
PGND
DMPORT+5V
L
AGND
R
A+9V
DET A/D
TXD
RXD
DGND
TP1323
TP1313
0.1
C1319
TP1325
TP1326
100k
R1322
100k
R1323
R1316
100k
R1307
100k
C1310
10V
47
25V
22
C1302
C1303
50V
1
C1304
50V
1
C1314
50V
1
C1315
50V
1
10V
100
C1318
TP1300
TP1301
TP1302
TP1303
TP1304
TP1305
TP1306
TP1307
TP1308
TP1309
TP1310
TP1324
TP1322
TP1321
TP1320
TP1319
TP1318
TP1317
TP1316
TP1315
TP1314
TP1312
TP1311
DMPORT BOARD
IC1300
LINE AMP
DMPORT
D
2
5
3
C
1
8
6
A
7
4
B
IC101 JB (RFi)
(CD play mode)
(CD play mode)
500 mV/DIV, 500 ns/DIV
1.2 Vp-p
RB
IC901 VE (X2)
1 V/DIV, 50 ns/DIV
111 ns
3.7 Vp-p
XB
L501
(TAPE REC mode)
(TAPE REC mode)
10 V/DIV, 5
μs/DIV
13.6
μs
56 Vp-p
FT
IC401 RE (X-OUT)
1 V/DIV, 100 ns/DIV
200 ns
3.5 Vp-p
IC101 (FEi)
(CD play mode)
(CD play mode)
200 mV/DIV, 500 ns/DIV
Approx.
400 mVp-p
400 mVp-p
IC101 (TEi)
(CD play mode)
(CD play mode)
200 mV/DIV, 500 ns/DIV
Approx.
500 mVp-p
500 mVp-p
59 ns
3.2 Vp-p
IC101 XG (XO)
(CD play mode)
(CD play mode)
1 V/DIV, 20 ns/DIV
FB
IC401 RB (XC-OUT)
1 V/DIV, 20
μs/DIV
30.5
μs
2.5 Vp-p
• Waveforms
– CD Board –
– TC Board –
– USB Board –
– MAIN Board –
(Page 35)
(Page
36)
HCD-ZT4
HCD-ZT4
35
35
•
: Uses unleaded solder.
• See page 27 for Circuit Boards Location.
7-14. PRINTED WIRING BOARD - MAIN Board -
1 4
5
8
1
4
5
8
1
14
15
29
28
42
43
56
1
4
5
8
14
8
1
7
14
8
1
7
9
16
1
8
B
E
B B
B
E
E
B E
B E
E
B E
B E
B E
B E
B
E
B
E
B
E
B
E
B
E
E
B
E
E
B E
B E
B
E
E
B
E
E
B E
B E
B
E
B
E
B
E
B
E
B E
B
E
B
E
B
E
B
E
1
100
80
81
50
51
30
31
5
8
1
1
4
B
E
E
B
E
E
B E
BE
B E
BE
R404
JR362
R212
JR363
R213
R215
R409
R411
R220
R221
R222
R223
R417
R224
R225
R226
R227
R279
R279
Q670
R228
R610
Q671
R229
R612
R614
R615
R616
R617
R428
Q681
R432
R628
R627
R434
R241
R242
C206
R243
R244
C209
Q690
R630
Q691
R631
Q693
R633
Q694
Q695
R634
R635
Q696
R636
R250
C214
R445
R639
R446
R256
R257
R258
R640
C412
R450
R644
C608
R645
C221
C222
C291
C283
C223
R263
C610
R651
R461
C427
R463
C428
R270
R465
R271
R466
R272
R467
R468
C620
R276
R277
R278
R662
R666
R668
R280
R474
R669
R282
R283
R284
R285
R286
R287
R288
R670
R289
R671
R672
R673
R481
R675
R676
R483
R291
R292
C256
C640
C641
C642
C451
R681
C647
R683
C648
C649
R491
R492
D202
R493
R497
Q110
Q111
C652
Q112
C654
R690
Q115
R691
Q116
R692
R693
R693
R694
C464
R695
C271
D213
D211
R696
C272
D212
R697
C273
R698
C275
C663
C664
C471
C665
D605
Q128
D608
C281
C282
C280
C294
C671
JW622
C677
C679
C299
C566
JR112
R647
R656
Q645
Q211
Q210
Q214
Q215
Q658
Q656
Q657
Q648
Q646
R646
R654
R381
R365
R357
R457
R427
R440
JR628
JR624
Q447
R327
R438
R436
R435
R433
R431
R426
R425
R424
R423
R422
R419
R480
R575
R576
C426
C425
C424
C423
C422
C420
C414
R490
C483
C410
C411
C496
R494
R393
D201
R391
R495
R214
R211
R210
R216
R217
R218
R648
C212
C656
JR118
JR113
JR661
R658
R657
R663
R664
R613
R655
R650
Q644
Q640
Q643
Q641
R642 R643
R649
R641
R653
R652
C698
Q647
JR114
C681
D628
JR622
C499
D630
C692
D632
C693
C697
JR441
R108
R110
R111
R112
R113
R114
R116
R117
Q178
R119
D468
R121
R122
R127
R128
R129
R322
R323
R324
R325
R326
JR623
R133
R328
R134
R135
R141 R131
R136
R137
D483
R138
R144
R145
C112
D110
C114
D690
D691
R345
D692
R346
C117
R153
D694
D695
R158
R159
C121
C122
R165
R166
R167
C321
R361
C133
C134
C135
R366
R367
R177
R178
R179
R182
R183
R184
R191
R181
R185
R186
R187
R188
C150
C151
C152
C153
R190
R192
R194
R195
R581
R390
R392
R394
R395
R397
JR102
JR103
JR104
JR105
JR106
JR107
JR109
Q402
D116
JR110
JR111
JR115
JR116
JR117
JR119
Q606
C183
C184
C185
JR120
JR121
JR122
JR123
C576
Q430
Q628
Q452
R200
R201
R202
R203
R204
R206
R207
R208
+
-
+
-
B
E
20 21
1
2
E
B
B
E
E
1
3
1
2
12
13
1
2
8
9
14
E
B
2
1
30
31
1
1
1
1
1
JW157
NO458
5
3
3
1
3
3
3
30
31
1 2
1
13
E
B
B
E
1
3
8
1
11
1
JW371
JW373
JW181
JW182
JW183
JW188
JW380
JW192
JW387
JW193
JW388
JW194
JW389
JW195
JW198
CN403
Q212
Q655
C213
R232
JW185
JW397
JW281
JW335
JW184
JW143
JW313
C416
X402
JW255
JW197
JW147
JW128
D651
JW179
C655
CN410
JW320
JW119
JW315
JW347
JW290
JW151
JW165
JW260
JW142
JW202
JW390
JW344
JW417
JW239
JW221
JW626
JW433
JW210
JW225
JW146
JW171
JW171
JW268
JW161
JW378
JW111
JW155
JW490
C498
JW233
JW366
JW126
JW189
JW357
JW329
JW382
JW405
JW292
JW362
JW459
JW334
Q627
JW244
JW152
JW386
JW447
JW414
JW286
JW410
JW199
JW381
JW375
JW363
JW133
JW175
JW291
JW457
JW201
JW376
JW420
JW314
JW330
JW421
JW322
JW177
JW452
JW278
JW113
JW273
JW230
JW140
JW325
JW480
JW385
JW403
JW349
JW190
JW332
JW270
JW191
JW404
JW251
JW242
JW242
JW243
JW374
JW231
JW250
JW354
JW214
JW481
JW229
JW287
JW122
JW282
JW153
JW102
JW402
JW180
JW108
JW228
JW208
JW207
JW204
JW274
JW139
JW400
JW115
JW443
JW482
JW169
JW262
JW138
JW550
JW361
JW384
JW337
JW114
JW383
JW104
JW370
JW103
JW257
C124
CN470
C143
C145
C141
C146
C147
C148
CN450
C195
C154
C192
C142
C132
C109
C191
C179
C128
C182
C127
C193
C139
C270
C243
C690
Q697
C696
Q113
C611
JW409
JW360
JW126
JW432
JW326
JW190
JW623
JW219
JW299
C699
ET602
JW406
JW120
JW356
JW353
JW212
JW379
JW200
JW137
JW125
JW249
JW176
JW293
JW424
JW367
JW359
JW302
JW124
D624
JW269
JW425
JW426
JW107
JW377
JW299
JW319
JW372
JW401
JW223
JW156
JW149
JW220
JW391
JW392
JW393
JW394
JW395
JW396
CN600
JW398
JW399
Q684
C201
CN420
C211
R637
R638
C215
C216
C218
C602
CN430
C604
C605
X401
C220
C609
C224
C225
C227
C616
C617
C618
NO468
JW203
C258
C242
C259
JW209
R687
R688
CN479
JW211
R689
JW407
JW213
JW408
JW215
JW216
JW217
C462
JW411
JW412
JW413
CN488
C274
JW415
JW416
C277
JW418
JW224
JW419
D601
JW226
D602
JW227
JW228
JW422
JW423
C284
JW232
C286
JW427
C287
JW428
JW234
CN690
JW235
JW236
JW237
JW238
JW621
ET601
JW430
C678
JW431
JW240
JW435
JW241
JW437
JW438
JW246
JW247
D623
JW248
C687
JW441
JW442
JW444
JW445
JW446
JW252
JW253
JW254
JW449
JW258
C694
JW450
JW451
JW453
JW454
JW261
JW456
JW263
JW458
JW264
JW265
JW267
JW461
JW462
JW463
JW464
JW271
JW275
JW277
JW280
JW283
JW284
JW285
JW289
CN110
1
11
CN490
JW294
JW295
JW296
JW297
JW298
C101
C102
C113
C118
R155
R156
R157
C123
C129
C131
A003
C137
C144
C149
JW101
JW105
JW106
JW109
JW300
JW301
JW303
JW304
JW110
JW305
JW112
JW307
JW309
JW116
JW117
JW118
JW310
JW311
JW312
JW121
JW316
JW317
JW123
C177
JW318
C178
JW127
C180
JW321
C181
JW323
JW324
JW130
JW131
JW132
C187
JW134
JW135
JW136
JW331
C194
JW141
JW336
JW338
JW144
JW339
JW145
JW148
JW340
JW341
JW342
JW343
JW150
JW345
JW346
JW348
JW154
JW158
JW159
JW351
JW355
JW163
JW358
JW164
JW166
JW167
JW364
JW170
JW365
JW172
JW173
JW368
JW174
JW369
JW178
JW436
JW466
JW429
C254
C241
C293
JR626
JR627
JR621
R132
JR630
JR629
IC675
IC401
IC670
IC672
IC673
IC407
IC251
IC253
IC252
IC602
IC603
MAIN BOARD
B
DISPLAY
BOARD
CN1101
TC BOARD
C
MIC
BOARD
NO701
CD
BOARD
CN201
USB
BOARD
CN907
J
9V REG
BOARD
BOARD
NO080
POWERAMP
BOARD
CN801
G
5V REG
BOARD
BOARD
CN055
P
DMPORT
BOARD
CN1301
CN1301
AB
TRANS2
BOARD
CN907
E
H
L
K
A
MIC BOARD
NO700
CD MECHANISM
DECK
(CHASSIS)
(CHASSIS)
M101
(FAN)
(FAN)
M
M102
(FAN)
(FAN)
M
9
1
FFC220
ANTENNA
AM
TUNER
(FM/AM)
A
B
C
D
E
F
G
H
I
J
1
2
3
4
5
6
7
8
9
10
11
12
K
1-875-546-
13
(13)
Ref. No. Location
• Semiconductor Location
Ref. No. Location
D110
J-7
D116
G-9
D201
C-8
D202
C-8
D211
B-7
D212
B-8
D213
B-7
D468
D-8
D483
D-8
D601
H-5
D602
J-6
D605
H-7
D608
H-7
D623
C-4
D624
B-3
D628
I-6
D630
H-3
D632
I-2
D651
C-4
D690
J-10
D691
J-10
D692
E-3
D694
B-7
D695
C-9
IC251
H-11
IC252
H-10
IC253
I-10
IC401
D-7
IC407
E-10
IC602
H-7
IC603
I-7
IC670
D-3
IC672
C-3
IC673
D-3
IC675
E-7
Q110
J-7
Q111
J-7
Q112
I-7
Q113
I-7
Q115
G-10
Q116
G-9
Q128
G-10
Q178
G-10
Q210
B-7
Q211
B-7
Q212
B-6
Q214
B-7
Q215
B-8
Q402
I-2
Q430
I-2
Q447
E-7
Q452
I-2
Q606
H-7
Q627
C-7
Q628
C-9
Q640
B-4
Q641
B-4
Q643
B-4
Q644
B-4
Q645
B-5
Q646
B-5
Q647
B-5
Q648
B-5
Q655
C-4
Q656
C-5
Q657
C-5
Q658
C-4
Q670
I-4
Q671
D-4
Q681
D-10
Q684
C-10
Q690
J-10
Q691
J-10
Q693
J-11
Q694
J-10
Q695
J-10
Q696
E-3
Q697
K-10
(Page 32)
(Page 30)
(Page
42)
(Page 40)
(Page 48)
(Page
43)
(Page
43)
(Page
34)
(Page 44)
(Page 42)
(Page 31)
HCD-ZT4
HCD-ZT4
36
36
• See page 50 for IC Block Diagrams.
7-15. SCHEMATIC DIAGRAM - MAIN Board (1/4) -
BOARD
B
TC
BOARD
CN1301
AB
DMPORT
BOARD
MIC
NO700
A
BOARD
11
(3/4)
MAIN
BOARD
12
(2/4)
MAIN
IC B/D
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
0
0
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
9
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
0
3.3
9
9
8.3
4.4
4.4
4.4
8.9
4.4
4.4
4.4
4.4
4.4
4.4
8.9
4.4
4.4
4.4
4.3
4.3
4.3
8.9
4.4
4.4
4.4
0
2.9
2.9
0
2.9
0
470
R271
R220
10V
100
C225
2SC3052EF-T1-LEF
Q402
R670
2.2k
470
R221
R276 47k
22p
C273
C221
100p
16V
47
C220
R279
2.2k
22p
C223
R229
2.2k
1000p
C275
R270
C271
100p
47p
C272
47p
C222
R669
470k
10V
220
C154
0.1
C153
10k
R153
10V
100
C148
50V
0.47
C147
50V
10
10
C146
50V
10
C145
50V
10
C144
50V
10
C143
50V
10
C142
R223
R226
50V
10
C194
50V
10
C193
50V
10
C192
50V
10
C195
C135
0.022
C133
0.047
C132
4.7k
R132
50V
2.2
0.1
0.1
C129
1.5k
R127
50V
1
1
C124
C121 330p
C122 330p
0.1
0.1
0.1
100
R121
1.5k
R177
50V
2.2
C179
C185
4.7k
R182
0.047
C182
10k
R134
10k
R135
10k
R184
10k
R185
15k
R128
15k
R178
1M
R190
50V
10
C137
50V
10
C187
50V
10
C109
47k
R201
100
R202
16V
C286 47
R282
100k
R288
47k
R283
6.8k
R286
47k
C281
8p
R285
47k
R284
8.2k
R280
5.6k
50V
C287
10
R289
2.2k
2SC3052EF-T1-LEF
(GT444/GT555)
Q430
50V
C123
10
R683
1k
10k
R681
RT1N431C-TP-1
Q681
JW277
C206
470p
C209
1000p
R203
470
16V
C258
47
16V
C218
47
R256
10k
C256
470p
R206
10k
50V
C259
10
R263
470
Q684
KTA1271Y-AT
ET601
EE
ET602
9P
CN450
2SC3052EF-T1-LEF
Q128
2SC3052EF-T1-LEF
Q452
47k
R257
47k
R207
R224
R225
50V
10
C131
50V
50V
10
C181
47k
R277
47k
R227
R258
27k
27k
R208
JL253
JL254
JL255
JL256
JL257
JL258
JL259
JL260
JL261
JL264
JL265
JL266
JL267
JL268
JL269
JL270
JL271
JL275
JL276
JL277
JL278
JL279
JL280
JL281
JL282
JL283
100
R122
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
TO
N
E
O
U
T
R
VOLINL
TONEOUTL
BASS2L
BASS1L
MID2L
MID1L
TREL
RECBL
RECAL
INGAINOUTL
GAMEL
INFL
DMPORT-L
AUX-L
1.5k
R145
1.5k
R195
2.7k
R191
47k
R138
47k
4.7
R188
1k
R278
1k
R228
22k
R222
22k
R272
56k
R192
0.047
C152
0.022
C184
0.1
C150
0.1
C151
R287
1k
10V
C284
100
1.2k
R144
2.7k
R141
1.2k
R194
4.7k
R183
4.7k
R133
0.01
0.01
C134
0.01
0.01
C183
10k
R137
2.7k
R136
2.7k
R186
10k
R187
MA2J1
110GLS0
D694
50V
C277
2.2
50V
C227
2.2
50V
2.2
C274
50V
2.2
8.2k
8.2k
C224
C178
C177
C128
C127
22
R200
2.2k
R179
2.2k
R129
C180
220p
C648
220p
C647
470p
C117
100k
R111
50V
22
C101
680
R114
2SC3052EF-T1-LEF
Q116
100k
R110
2SC3052EF-T1-LEF
Q115
470
R112
1.8k
R113
10k
R108
MC2837
D116
15k
R117
50V
2.2
C118
100
R116
100
R119
50V
4.7
C102
50V
2.2
C139
R291
6.8k
R292
10k
C291
0.068
0.068
C283
C282
0.1
C280
0.015
C294
8P
CN470
11P
CN490
C299 220p
C471
0.1
0.1
6.8k
6.8k
2.2k
2.2k
JR123
C241
1000p
470p
C242
C293
1
C243
1
8
7
6
5
4
3
2
1
1
3
5
4
6
18
19
17
15
12
14
16
13
11
8
9
7
PB-L
CD_USB-R
PB-R
MIC
CD_USB-L
61
63
65
57
32
31
66
67
ST-L
ST-R
DMPORT-L
DMPORT-R
MIC
PB-L
PB-R
REC-R
REC-L
AUX-R
ST
-R
50V
10
C191
AUX-R
DMPOR
T-R
REC-R
AUX-L
DMPOR
T-L
USB_REC-R
USB_REC-L
OUT
-L
SW
-OUT
2
49
58
AUX-L
OUT
-R
REC-L
10k
R181
50V
10
C141
10k
R131
ST
-L
VCC
GND
GND
VCC
GND
VCC
(1/4)
MAIN BOARD
(CHASSIS)
BASS AGC
AM
FFC220
ST-CLK
ST-DOUT
ST-CE
ST+9V
ST-DIN
TUNED
GND
1
ST-R
ST-L
9
Q115, 116
BAND-PASS FILTER
Q402, 452
MUTING
MUTING
0.068
B+ SWITCH
Q681, 684
7
11
D
B
16
6
9
17
10
F
5
15
K
19
3
G
1
18
12
C
E
H
8
J
4
13
A
14
2
I
10V
100
C149
IC253
NJM4558V-TE2
LINE AMP
IC253
8
7
6
5
4
3
2
1
IC252
NJM4558V-TE2
LINE AMP
IC252
16V
47
C270
IC251
NJM4558V-TE2
LINE AMP
IC251
8
7
6
5
4
3
2
1
R2A15216FP
IC407
IC407
INPUT SELECTOR,
ELECTRICAL VOLUME
VOLINR
BB1R
BB2R
OUTR
AGCOUTR
DA
TA
CLK
SWOUT
AGCC
AGCOUTL
OUTL
BB2L
BB1L
AUX-R
DMPORT-R
INFR
GAMER
INGAINOUTR
RECAR
RECBR
SA1
SA2
TRER
MID1R
MID2R
BASS1R
BASS2R
ST
-L
CD-L
TAPE-L
MIC
VC
REFOUT
REFIN
GND
VCC
DPLL/SURL
DPLR/SURR
TAPE-R
CD-R
ST
-R
A+9V
PB-LCH
PB-RCH
A-GND
REC-LCH
REC-RCH
M-GND
M+9V
TP-STATE
A+9V
MIC SIGNAL
MIC GND
AUX-L
AGND
AUX-R
AGND
HP/MIC DET
1
2
3
4
5
6
7
8
9
CHASSIS GND
PGND
DMPORT+5V
A+9V
DET A/D
L
AGND
R
TXD
RXD
DGND
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
8
ANTENNA
COAXIAL
FM 75
TUNER
(FM/AM)
2SC3052EF-T1-LEF
Q178
BASS AGC
RT1P141C-TP-1
Q670
MUTING CONTROL
(Page 34)
(Page 42)
(Page 31)
(Page
38)
(Page
37)
Click on the first or last page to see other HCD-ZT4 / LBT-ZT4 service manuals if exist.