GRUNDIG Service
27
GV 8000…, GV 8300…, GV 8400…
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Chassisplatte – FM-Ton / Chassis Board – FM Sound (AF)
DE/DC
3,9V
3,9V
(HIFI-AUDIO-PROCESSOR)
2,8V
2,1V
3,7V
3,8V
3,9V
3,8V
3,8V
3,8V
3,8V
3,8V
3,8V
3,8V
7
8
9
10
11
12
GNDAF
GNDAF
GNDD
GNDD
50V
100p
2811
25V
10n
2829
3850
1%
39k
3861
100
3860
100
3828
10k
3829
10k
SCL
SDA
TRIA/ALI
HP2
7850
TDA9604H/N1
22
23
24
25
26
28
30
31
32
33
34
39
40
41 42
43
DOC
EOSel
M
M
audio LPF
audio LPF
Reduction
Reduction
Noise
Noise
DCL
Iref
S&H
DCR
DCL
SDA
SCL
audio
audio
limiter
limiter
detect
level
LPF
HF
LPF
HF
HF
HF
1.8Mhz
1.7Mhz
clipper
clipper
DOC
Mute
1.4Mhz
1.3Mhz
2
PLL
PLL
S&H
S&H
CCO
CCO
I C
Chassisplatte – Kopfverstärker / Chassis Board – Head Amplifier (HA)
1k2
1k1
1
2
1
6
6
to AF
from PS
SWIN
(HEADAMPLIFIER-AUDIO)
(INVERTER)
for STEREO only
to DE/DC
from AF
from DE/DC
from DE/DC
7V
0V
0V
V
V
0V
0V
V
4V
0V
0V
0V
0V
0V
0V
5,2V
4,2V
4,2V
0,2V
0,2V
5,2V
4,2V
3,4V
3,4V
0V
0V
0V
2,1V
2,1V
0,6V
0,6V
4,1V
2,5V
7
9
10
11
12
13
14
15
16
H
G
F
E
D
C
B
3087
100k
50V
10n
2158
50V
10n
2081
50V
10n
2082
5V
0n
85
50V
10n
2087
50v
22p
2080
50V
10n
2083
50V
10n
2084
3162
0E
3163
0E
3151
100k
3080
5E6
3158
4k7
3086
330E
3082
470E
3081
560E
3083
4k7
3085
3084
4k7
5VASW
FMAP
HP2
IRAF
FMAR
ENVC
5VASW
5VASW
5VASW
BFS20
7153
BC847B
7085
STV5712/TR
7080
1
16
8
7
10
6
11
12
5
4
13
3
14
2
15
9
VCC
V1
SW-H
FMOUT
REC
C1
SW-
SW LOGIC
H1
VIN
GND1
VMES
H2
PROT
PROT
C2
GND2
V2
IOUT
P
REC
LP
LP
VC
V2
11
10
12
9
I_OUT
VCC
V1
V
u
86
9071
5%
47u
5080
50V
470p
2162
6
3089
560E
Record (Left/Right Channel)
Record (Luminance / Chrominance)
Playback (Left/Right Channel)
Playback (Luminance / Chrominance)
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