28
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV 8000…, GV 8300…, GV 8400…
L4931CV120
not used
F-Regulator)
(12V-Regulator)
(Buffer)
(9/14VM2-SWITCH)
X7R
3394-2
3394-1
3,8V
2,4V
play 8,2V
Wind 14,4V
14,3V
14,3V
0,1V
0V
0,7V
12V
14,3V
for Stereo
;
13
14
15
16
3396
22k
3394
2k2
3384
100E
3385
3k3
3386
330E
3395
22k
3389
2k2
3377
4k7
3376
0E
3378
2k7
3375
1k
3374
270E
16V
100u
2370
50V
47u
2363
25V
220u
2364
16V
470u
2365
25V
220u
2367
16V
220u
2373
50V
10u
2376
10u
5350
20%
330n
5355
SBYV27-200
6357
BYD33D
6356
BYD33D
6355
BYV27-200
6358
BYD33D
6371
BC847B
7359
25V
220n
2372
25V
100n
2369
25V
220n
2359
6372
10%
500V
470p
2377
500V
1n
2368
400V
10n
2378
T100mA
1350
BD438
7358
FB
5358
10
11
12
14
15
16
L78M12CV
7420
TL431CZ
7352
R
A
K
470E
3379
for stereo 470E
13,3V
14,4V
3398
100E
3397
100E
3387
560E
560E
3388
Chassisplatte – Netzteil (PS)
Chassis Board – Power Supply (PS)
Chassisplatte – Laufwerksteuerung / Deck-Elektronik (DE)
Chassis Board – Drive Control / Deck Electronic (DE)
0V
CREV
SCL2
SDA2
DATD1
DATD2
CLKD1
CSW
AGC
8SC1
SWIN
CSCP
HP2
2,1V
2,1V
3452
1k8
3451
10k
3432
10k
5VD
5VD
5VD
22p
2404
50V
22p
2403
50V
10MHz
1400
57
39
5
8
62
63
64
1
2
14
40
26
43
41
42
TI1
CAP3
INT2
INT0
XTAL2
PW1
P67
P46
P35
P47
RESET
XTAL1
VSS1 VSS2
SCLK1
RXD1
TXD1
AGND
P43
P32
P45
P44
CLK
Chassisplatte / Chassis Board – SECAM L (VS-S)
67
current
SECAM
(Buffer)
(Buffer)
to VS
from DE/DC
to HA
V
5,2V
3,8V
H
G
F
E
D
3116
1k
3155
12k
3117
2k2
3120
8k2
5VASW
5VASW
5VASW
5VASW
BC557B
7105
10k
3159
CSI
CSP
FMRV
5%
330u
5106
BC847B
7106
25
33
p
211
47n 50V
for mstd 100p
2119
25V
10n
2116
… chip components
OSCILLOGRAMS
…
…V MEASURED IN RECORD MODE
…V MEASURED IN PLAYBACK MODE
Reference
Oscillograms ....4-38
ACG4.1...............29
AF..............27,
4-29
AL ..............23,
4-25
DC ...................4-35
DE .............28,
4-33
FV..............26,
4-21
FM ...................4-24
HA .............27,
4-30
IO...............25,
4-27
OS ...................4-24
PS..............28,
4-31
QMB ...................17
QNIC ...............4-36
VP....................4-24
VS..............23,
4-25
VS-S ..........28,
4-28
Seiten "4-…" – siehe Basis-Service-Manual
Pages "4-…" – see Main Service Manual