Panasonic SA-VK870GC / SA-VK870GCS / SA-VK870GS Service Manual ▷ View online
20.5. Deck Circuit
B
TO
MAIN CIRCUIT
(CN2803)
IN SCHEMATIC
DIAGRAM - 7
(CN2803)
IN SCHEMATIC
DIAGRAM - 7
L
TO
DECK MECHANISM
CIRCUIT (CS971)
IN SCHEMATIC
DIAGRAM - 18
DECK MECHANISM
CIRCUIT (CS971)
IN SCHEMATIC
DIAGRAM - 18
K
DECK CIRCUIT
SCHEMATIC DIAGRAM - 13
SA-VK870GC/GCS/GS
DECK CIRCUIT
: TAPE PLAYBACK SIGNAL LINE
: TAPE RECORD SIGNAL LINE
: +B SIGNAL LINE
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
D
E
F
H
G
C
TO MOTOR
1
4
2
3
5
1
4
2
3
5
PBLIN
ERASE
GND
PBRIN
CP1301
ERASE
HEAD
R/P
HEAD
LCH
RCH
H=OFF
vcc
RIPPLE
REJECTION
NOR/Chro
LOGIC
Mute
Mute
+
+
-
-
PB
Rec
PB AMP (L)
ALC
Rec
Rec
PB
PB
REC AMP (L)
TPS
Rec
PB
PB AMP (R)
REC/PB
LOGIC
Rec
PB
REC AMP (R)
11
10
9
8
7
6
5
4
3
2
1
12
13
14
15
16
17
18
19
20
21
22
BEATPROOF SWITCH
VCC
Nor/Cro
RF
SW
GND
L NF
L EQ
Lout
Lin
PB
PB
PB
PB
GAIN
ADJ
LOW
CUT
ALC
TPS
ALC
REC
REC
Lout
PB
PB
PB
PB
Rin
Rout
R NF
R EQ
Rin
REC
SW
Rout
PB/
REC
REC
REC
TPS
TPS
Out
REC RIN
AF GND
REC LIN
DMT
DGND
DVREF+
9V GND
PHOTO
TAPE_EJECT
REC
BP
DECK_AD2
MOTOR GND
AF GND
9V
MOTOR
PLUNGER
DECK_AD1
PB LOUT
PB ROUT
MOTOR_10V
5
4
6
3
1
2
R1374
470
R1342
47K
R1314
1K
R1210
33K
R1110
33K
R1380
0
R1345
1K
R1343
3.3K
R1344
27K
C1326
16V10
R1341
470
AFGND
AFGND
PBLOUT
VREF-
VREF+
AN7
AN6
REC
RECLIN
RECRIN
REC
PLVCC
MOTOR_VCC
MOTOR_9V
9VGND
DMT
PBR
AFGND
D9V
PBLIN
PBRIN
9VGND
9VGND
D9V
AFGND
RECH1
R1204
C1201
R1201
C1203
C1221
R1109
R1107
R1106
R1209
R1207
R1206
C1110
C1109
R1205
C1210
CP1902
WR1903
Q1316
C1209
Q1314
CN1305
R1309
R1313
C1310
R1064
C1202
R1062
D1301
L1302
L1301
G2ZZ00000024
R1061
0
R1203
18K
C1222
0.01
C1208
16V10
16V10
C1204
0.027
C1207
1500P
C1105
470P
C1122
0.01
R1103
18K
R1303 4.7M
C1304 50V4.7
C1108
16V10
C1123
270P
C1307
10V220
R1105
2.2K
C1103
16V100
C1107
1500P
C1302
0.033
R1102
1.5K
C1104
0.027
C1106
50V2.2
R1104
10K
R1101
33
C1102
1000P
C1121
1000P
1000P
50V1
C1101
R1202
1.5K
C1206
50V2.2
C1301
50V0.1
PBROUT
R1305
10K
C1223
270P
C1308
16V22
16V22
C1305
16V33
R1304 22K
C1205 470P
10K
50V1
33
16V100
1000P
1K
1K
100K
1K
1K
100K
6800P
50V3.3
2.2K
6800P
50V3.3
470
10K
50V0.1
0
1000P
0
2SD09650RA
B1GDCFGH0002
B0ACCK000005
G0C470JA0052
REC:H
1
2
7
9
10
15
18
19
16
17
12
11
14
13
8
4
1
3
2
6
5
21
20
5
2
1
4
3
Lin
Q1317
B1ABGC000001
Q1310
B1AAGC000006
Q1312
B1ABCF000011
Q1306,Q1307
B1ABCF000011
Q1315
B1ACKD000006
C1323
50V1
R1338
4.7K
R1334 22K
R1063
0
C1324
16V47
C1321
4700P
R1337
10K
C1320
50V1
C1311
16V47
R1332
10K
R1335
1.5K
R1333 4.7
C1319
16V100
C1318
0.047
R1330
4.7
C1315
2200P
VREF-
VREF-
VREF+
C1312
3300P
R1328
15K
R1329
4.7K
R1319
12K
R1320
100K
R1318
10K
AN6
RECH1
RECH1
AN7
R1322
82K
MOTOR_GND
R1321
47
C1316 1000P
C1317 1000P
R1327
4.7K
C1314
2200P
R1331
7.5K
1
2
3
4
5
6
7
8
9
Q1307
Q1306
IC1000
C1AA00000612
AUDIO HEAD SWITCH
IC1001
AN7326K
PB/REC PRE AMP
SWITCH
BIAS SWITCH
Q1309
B1AAGC000006
BIAS SWITCH
SWITCH
MOTOR DRIVE CONTROL
POWER SUPPLY
MOTOR DRIVE
Q1303
B1GBCFGH0001
INVERTER
Q1304
B1GDCFGH0002
INVERTER
Q1302
B1GDCFJJ0002
MUTING CONTROL
Q1101
B1ABGC000001
MUTING SWITCH
Q1201
B1ABGC000001
MUTING SWITCH
NC
MODE
HALF
PL
PL_GND
PHOTO_T
RECINH_F
VREF+
VREF-
TPS
R1371
22K
C1303
0.033
R1302
470
C1371
0.01
6
TP
3
TP
SA-VK870GC / SA-VK870GCS / SA-VK870GS
117
20.6. D-Amp Circuit
M
SCHEMATIC DIAGRAM - 14
D-AMP CIRCUIT
SA-VK870GC/GCS/GS
D-AMP CIRCUIT
1/2
2/2
1
2
3
4
P1
: MAIN SIGNAL LINE
TO D-AMP
SECTION (2/2)
SECTION (2/2)
TO SPEAKERS
: +B SIGNAL LINE
: -B SIGNAL LINE
6
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2
4
3
1
L5301
3
2
1
ZJ5410
SW+
SW_+
C5350
0.1
C5351
0.1
SW-
10K
R5606
B1ADCE000012
Q5603
R5608
10K
R5604
1.2K
R5610
1.2K
1.2K
R5611
R5603
10K
R5602
10K
Q5604
B1ABCF000176
B1ABCF000176
R5609
10K
Q5602
R5302
10
220P
C5307
35V470
C5516
1M
R5507
390P
C5552
X5500
X5500
H2A6023A0011
MAZ80510ML
D5503
10
C5555
0.1
C5554
R5311
10
1M
R5508
100P
C5553
35V470
C5517
C5525
0.1
C5524
0.1
VDDA3
C5540 100V22
R5510
470
C5315
1000P
5.6K
R5307
0.47
C5317
C5562
6.3V1000
OSC
IN+_SW
FAN_DC
FAN_GND
C5312
330P
R5306
5.6K
C5314
0.47
C5313
0.1
VDDP
VSSP
C5316
0.1
C5323
220P
0.1
C5319
0.1
C5318
0.1
C5560
R5511
22
100P
C5561
SW+5V
5
6
4
1
2
3
9
11
13
14
12
10
7
8
IC5501
C0JBAF000716
VSSA3
10
R5310
R5505
100
47P
C5558
5
6
4
1
2
3
9
11
13
14
12
10
7
8
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
D-TYPE FLIP-FLOP
IC5500
OSC
SW+5V
SW+5V
MOD_DA
MUTE_F
MUTE_S
FL_+
SW_+
SW_-
DC_DET
68K
R5218
C_+
120K
R5228
120K
R5020
FR_+
R5019
68K
Q5101
B1ABCF000176
6.3V100
C5133
R5110
22K
1.2K
R5023
AGND
1.2K
R5022
180
R5021
0.1
C5033
B1ABCF000176
Q5102
R5318
120K
R5607 1.2K
R5035
5.6K
R5034
5.6K
220P
C5325
1000P
C5333
K5500
220P
C5326
R5304
100
C5304
330P
C5601
16V10
C5331
1000P
R5308
5.6K
0.47
C5334
R5309
5.6K
0.47
C5332
C5306
0.1
19
21
23
22
20
10
2
3
1
7
8
9
4
5
6
12
15
14
17
18
16
13
11
IC5300
C1BA00000487
AUDIO DIGITAL POWER AMP
C5324
0.015
C5321
0.22
C5302
0.1
0.1
C5310
220P
C5311
0.1
C5309
C5322
0.015
C5303
0.1
R5305
10
R5319
22
0.68
C5328
R5300
22
C5327
0.1
C5301
0.1
0.68
C5300
2
4
3
1
L5300
MODE2
MODE1
MODE1_2
MODE2
CD2
D1
SWITCH
SWITCH
Q5601
B1ABCF000176
SWITCH
SWITCH
DC DETECT
DC DETECT
GND
D2
SD1
SD2
SGND1
VSSD
OUT1
PROT
OUT2
BOOT2
VSSP1
VSSP2
STABI
VSSA2
VDDP2
VSSA1
BOOT1
VDDP1
OSC
VDDA1
6Y
5A
6A
VCC
O2
4Y
CP2
VCC
4A
5Y
3A
2A
2Y
1A
1Y
3Y
O1
O1
O2
CP1
CD1
GND
IN1+
IN1-
MODE
IN2-
IN2+
SGND2
VDDA2
FAN_GND
G0B9R5K00004
G0A150L00003
K5251
...VK870
...VK870
0
K5254
0
0
6
4
3
5
9
8
12
10
11
7
1
2
JK5001
CENTER +
FRONT L+
FRONT L-
FRONT R+
CENTER -
FRONT R-
SUBWOOFER -
SUBWOOFER +
SURROUND L+
SURROUND L-
SURROUND R+
SURROUND R-
C-
FR-
FL-
SL+
SR+
SL-
SR-
FL+
FR+
SW-
C+
SW+
R5114
R5317
R5327
1.2K
1.2K
1.2K
R5115
1.2K
SL_+
SR_+
68K
R5113
120K
R5111
R5504
22
FHOP
H2A7003A0011
0.01
C5550
D5502
D5501
100P
C5557
0.01
C5556
X5501
X5501
MA2J11100L
D5501 - D5502
R5506
1M
C5551
390P
C5559
47P
D5302
B0HCMM000019
B0HCMM000019
B0HCMM000019
B0HCMM000019
D5304
D5301
D5303
0
R5671
SA-VK870GC / SA-VK870GCS / SA-VK870GS
118
M
SCHEMATIC DIAGRAM - 15
D-AMP CIRCUIT
B
TO
MAIN CIRCUIT
(CN2808)
IN SCHEMATIC
DIAGRAM - 10
MAIN CIRCUIT
(CN2808)
IN SCHEMATIC
DIAGRAM - 10
N
TO
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 16
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 16
SA-VK870GC/GCS/GS D-AMP
CIRCUIT
1
2
3
4
P1
1/2
2/2
TO D-AMP
SECTION (1/2)
SECTION (1/2)
: MAIN SIGNAL LINE
: +B SIGNAL LINE
: -B SIGNAL LINE
6
15
16
17
18
19
20
21
22
23
24
25
26
27
28
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A
B
D
E
F
H
G
C
C5051
0.1
C5052
0.1
0.1
C5050
C5053
0.1
2
4
3
1
G0B9R5K00003
G0B9R5K00004
FL+
FL_+
FR-
FR+
FR_+
FL-
2
4
3
1
G0B9R5K00003
L5201
C-
C5250
0.1
C5251
0.1
C+
C_+
R5200
10
220P
C5211
220P
C5203
C5201
0.015
C5200
0.1
C5150
C5152
C5155
C5151
C5522
0.1
10
R5211
C5523
0.1
100V22
C5240
35V470
C5509
35V470
C5508
C5223
0.47
R5206
5.6K
330P
C5224
6
5
8
9
11
12
10
14
15
13
7
2
1
1
4
3
17
17
16
CN5050
R5210
10
VDDA2
R5205
5.6K
C5222
0.47
1000P
C5221
0.1
C5213
0.1
C5207
VSSP
VSSA2
VDDP
C5208
0.1
C5209
0.1
C5212
220P
C5020
0.1
C5008
0.015
220P
C5010
0.1
C5019
R5004
10
R5005
10
220P
C5012
35V470
C5513
L5500
J0JKB0000020
0.1
AGND
0.1
C5514
35V470
C5512
0.1
C5519
0.1
C5515
L5501
J0JKB0000020
C5518
0.1
5
6
1
3
4
2
8
7
CN5500
100V22
C5040
VSSP
VSSP
C5510
35V470
C5511
35V470
C5521
0.1
10
R5010
VDDP
C5520
0.1
VDDA0
VDDP
0.1
C5018
C5030
220P
3
2
1
ZJ5400
C5445
C5004
0.47
R5002
5.6K
C5002
0.47
5.6K
R5000
C5001
1000P
1000P
330P
C5006
C5025
0.1
C5024
0.1
10
R5011
OSC
OSC
IN+_FR
IN+_FR
IN+_FL
IN+_FL
IN+_SW
VSSA0
C5014
0.68
C5015
0.68
R5006
22
R5007
22
R5031
5.6K
C5016
0.1
R5030
5.6K
0.1
C5017
2
4
3
1
L5000
G0A150L00003
C5000
1000P
1000P
5.6K
R5003
0.47
C5005
1000P
C5032
R5008
100
C5007
330P
R5001
5.6K
C5003
0.47
2
4
3
1
L5002
L5001
220P
C5011
0.1
C5023
0.1
C5021
C5028
0.1
C5234
1000P
1000P
C5225
0.68
2
4
3
1
G0A150L00003
L5200
22
R5217
0.1
C5226
R5032
5.6K
16V10
C5602
R5207
5.6K
0.47
C5232
C5231
1000P
R5208
5.6K
0.47
C5233
R5204
100
C5216
0
C5214
0.1
220P
C5218
0.1
C5219
0.1
C5217
C5031
0.22
C5009
0.015
220P
C5013
19
21
23
22
20
10
2
1
3
7
8
9
4
5
6
12
15
14
17
18
16
13
11
C5022
0.1
C5202
0.22
C5206
0.1
C5204
0.015
19
21
23
22
20
10
2
3
1
7
8
9
4
5
6
12
15
14
17
18
16
13
11
220P
C5205
R5201
10
AUDIO DIGITAL POWER AMP
AUDIO DIGITAL POWER AMP
MODE1
MODE2
SGND1
SGND1
OUT2
STABI
BOOT2
VSSP2
OUT1
VSSP1
VSSD
VSSA2
VDDP2
PROT
VSSA1
BOOT1
VDDP1
OUT1
VSSP1
PROT
VDDP1
BOOT1
OUT2
BOOT2
VSSP2
VSSD
VSSA2
VDDP2
STABI
VSSA1
AGND
AGND
REAR R/SUBWOOFER
FRONTL
FRONT R
SIGNAL A_GND
SURROUND L
REAR L/AGND
CENTER
AGND
SURROUND R
IN1-
VDD
GND
VSS
VDD
GND
OSC
IN1+
FAN DC
FAN_DC
FAN GND
FAN_GND
VSS
VDDA1
VDDA1
MUTE S_C (MODE 1)
MUTE F_SW (MODE 2)
MUTE_S
MUTE_F
MOD_DA
MOD_DA
FHOP
OSC2/FAN
DC_DET
DC_DET
OSC
IN1-
IN1+
IN2+
MODE
MODE
IN2+
SGND2
SGND2
VDDA2
IN2-
VDDA2
IN2-
IC5000
C1BA00000487
IC5200
C1BA00000487
C5154
C5153
1000P
1000P
1000P
1000P
1000P
1000P
0.1
C5402
220P
C5411
0.1
C5410
0.1
C5409
C5421
0.22
0.015
C5422
C5403
0.1
220P
C5425
R5405
10
220P
C5426
100V22
C5440
220P
C5407
C5418
0.1
C5424
R5402
10
330P
C5412
R5118
5.6K
C5120
C5117
1000P
1000P
R5119
5.6K
C5121
0.47
C5419
0.1
C5413
0.1
C5423
220P
C5416
0.1
VDDA4
VDDP
R5410
10
R5411
VSSP
VSSA4
OSC
IN+_SR
IN+_SL
10
C5119
1000P
1000P
0.47
C5107
R5104
5.6K
R5103
5.6K
C5106
330P
C5404
0.015
0.47
C5406
0.1
19
21
23
22
20
10
12
15
14
17
18
16
13
11
OUT1
VSSP1
OUT2
VSSD
BOOT2
VSSP2
VSSA2
VDDP2
STABI
IN2+
MODE
SGND2
IN2-
VDDA2
2
3
5
6
1
7
8
9
4
SGND1
BOOT1
VSSA1
PROT
VDDP1
IN1-
OSC
IN1+
VDDA1
0.47
C5452
0.1
C5451
0.1
SR-
SL-
SR+
2
4
3
1
L5402
SL+
C5454
0.1
C5453
0.1
2
4
3
1
L5401
MODE1_2
SR_+
SL_+
R5037 5.6K
R5419
22
C5400
0.68
C5427
0.1
R5036
5.6K
R5400
22
C5401
0.1
2
4
3
1
L5400
G0A150L00003
C5428
0.68
R5404
100
C5431
1000P
IC5400
C1BA00000487
AUDIO DIGITAL POWER AMP
G0B9R5K00004
G0B9R5K00003
IN+_SR
IN+_C
IN+_SL
FHOP
K5302
0
D5204
D5203
B0HCMM000019
B0HCMM000019
D5402
D5404
D5401
D5403
B0HCMM000019
B0HCMM000019
B0HCMM000019
B0HCMM000019
D5002
D5004
D5001
D5003
B0HCMM000019
B0HCMM000019
B0HCMM000019
B0HCMM000019
0
C5450
0
K5405
K5781
0
K5782
0
SA-VK870GC / SA-VK870GCS / SA-VK870GS
119
20.7. SMPS Circuit
P1
2
3
4
SA-VK870GC/GCS/GS
SMPS CIRCUIT
1/2
2/2
M
TO
D-AMP CIRCUIT
(CN5500)
IN SCHEMATIC
DIAGRAM - 15
D-AMP CIRCUIT
(CN5500)
IN SCHEMATIC
DIAGRAM - 15
B
TO
MAIN CIRCUIT
(CN2701)
IN SCHEMATIC
DIAGRAM - 8
MAIN CIRCUIT
(CN2701)
IN SCHEMATIC
DIAGRAM - 8
TO SMPS
SECTION (2/2)
SECTION (2/2)
7
N
SCHEMATIC DIAGRAM - 16
SMPS CIRCUIT
: +B SIGNAL LINE
: -B SIGNAL LINE
5
6
FOR GCS/GS
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2
3
1
IC5701
C5HACYY00003
SWITCHING REGULATOR
0
R5725
3
1
2
B0HBSM000043
D5801
R5834
2.2K
3
2
1
ZJ5801
2.2K
R5832
+30V_SENSE
FAN_18V
10K
R5863
DCDET
DCDET1
10K
3.9K
R5862
FAN_18V
-30V_SENSE
10K
R5864
DCDET1
UNR221400L
QR5801
-30V_SENSE
DCDET
R5801
10K
D5807
D5809
+30V_SENSE
R5800
12K
R5860
10K
0.1
C5831
0.1
C5832
0.1
C5823
5
6
1
3
4
2
8
7
H5801*
2SA207700L
Q5860
C5800
0
C5826
0
Q5862
R5861
Q5861 - Q5862
Q5861
B1ABCF000176
100K
R5703
100K
R5702
35V2200
C5805
B0HFRJ000012
D5803
35V2200
C5808
22
R5720
D5731
B0EAMM000057
3
2
1
D5702
B0ZAZ0000052
C5713
0.01
3
2
1
ZJ5803
C5700
F1BAF1020020
1000P
ETS42BN1A6AD
MAIN TRANSFORMER
C5821
0.01
C5819
0.01
C5822
0.01
C5820
0.01
25V470
C5824
SYNC
K4
...GCS/GS
...GC
0
SYS6V
2.2K
R5805
15K
R5806
A
R
3
2
C
1
C0DABFC00002
SHUNT REGULATOR
FEED BACK CONTROL
FEED BACK
INVERTER
CURRENT
LIMITING SWITCH
CURRENT
LIMITING SWITCH
FEED BACK
IC5801
0.1
C5818
-13V
DCDET1
0.1
C5815
C5812
0.1
DC_18V
0
R5803
47K
R5804
0.1
C5810
2.7K
R5802
C5896
0.1
6
8
9
7
2
1
4
5
3
10
11
CN5802
PCONT
B1GBCFLL0037
QR5810
330
R5809
330
R5807
1K
R5730
B0BC6R100010
D5725
2.2K
R5808
4
3
1
2
B3PBA0000402
PC5720
R5817
330
R5810
330
4
3
1
2
B3PBA0000402
PC5701
1.5K
R5811
0.1
C5825
1.5K
R5816
8.2K
R5812
MAZ80750ML
D5806
SYS6V
-30V_SENSE
+30V_SENSE
2.7K
R5815
24K
R5813
Q5802
B1ABCF000176
120
R5724
DC_18V
3
1
2
B0HBSM000043
D5802
-13V
FAN_18V
25V470
C5816
B0EAMM000057
D5805
D5804
B0EAMM000057
11
13
14
12
10
8
6
5
7
9
18
15
16
17
1
4
3
2
T5701
C5813
35V470
R5722
1K
C5722
1000P
220P
C5721
R5729
10K
C5728
1000P
R5728 100K
D5724
D5727
MA2J11100L
MA2J11100L
R5732
100
B1ABCF000176
Q5722
10K
R5721
D5722
B0BC019A0007
MA2J11100L
D5723
C5720
0.1
B0EAMM000057
D5729
B0BC010A0007...GCS/GS
MAZ81800ML...GC
D5721
D5726
B0EAKM000117
1K
R5723
MA2J11100L
D5728
2SC3940ARA
Q5720
SWITCHING
2SA207700L
Q5721
Q5720
Q5722
D
C5737
470P
C5726
0.1
C5730
50V1
R5726
0.82
C5724
D5732
B0BC035A0007
50V56
R5733
47K
R5731
0
C5725
0.1
C5723 470P
S
GND
FB
VCC
OLP/SS
OCP/BD
+30V_SENSE
PCONT
DC18V
AM_BP
-13V
DCDET
DC18V
+18V.-12V_GND
+18V.-12V_GND
GND
GND
-30V_SENSE
FAN_GND
FAN_18V
-30V_SENSE
SYS6V
SYNC
SYS_GND
+30V_SENSE
4
5
7
6
TRANSFORMER TEMP DETECT
TRANSFORMER
TEMP DETECT
DC DETECT
C5869
0.1
TH5860
D4CC11040013
PCONT
8.2K
R5814
100V0.22
C5817
VIN
VCC
DRAIN
+30V
-30V
+FAN 18V
GND
+18V
AMPGND
-12V
AM_BP
Q5803
2SC3940ARA
SWITCHING
AM_BP
R5825
1K
91
R5820
91
R5824
91
R5822
91
R5821
91
R5823
MA2J11100L
MA2J11100L
B1GDCFGA0018
QR5802
R5841
120K
R5840
82K
DC DETECT
R5750...GC
0
K5
0
K3
0
C5870...GC
0.1
SA-VK870GC / SA-VK870GCS / SA-VK870GS
120
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