Netzteil (Ps); Secam-L (Vs-S); Laufwerksteuerung / Deck-Elektronik (De); Power Supply (Ps) - Grundig GV 8000 GB Service Manual

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