10
GRUNDIG Service
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV 67 …, GV 69 …
Blockschaltplan / Block Circuit Diagram (S-VHS – Chrominanz / Chrominance, SF)
U S/W
CHROMA
OUT
FBAS/CH
25
9
8
6
7
5
17
47
45
46
48
42
32
30
3
34
MMV
VCXO
REC/PB
COMPOSITE/
SVHS
PAL-FILTER
4,43
MHz
ACC
PB
REC
REC-
PAL
NTSC
PB
REC-
SEC
PB
REC
SECAM
U S/W
U NTSC
7220
13
14
15
18
-33
°
20
19
-45
°
-45
°
VCO
:2
BGP
LOGIC
5
11
7234
7406
5SW3
+5VW1
7411
43
NORM
PLL
:321
VCO
:8
PHASE
SHIFT
4,43MHz
KILLER
HI-CH
18
26
27
20
36
6
7
1
15
14
SECAM
DETECT
REG. KILLER
13
11
16
21
2374
2376
7380
7382
7376
7374
LPF
3
1
4
1,6MHz
HI-CH
7085/46
(DE)
AUTOSEC
7166
S+5VA
5,06MHz
2
1
4
+5VW1
7020/12
U SOST
1029
+5VF3
+5VF3
U
SOST
U
NTSC
7280
S+5A
COMPOSITE
7410
SR9
X2
1
4
7390
PLL
7402
7398
2FSC to Y-DROP-OUT
FSC/2FSC
627kHz
5
7175
DELAY
7176
LPF
3
7182
7190
7196
7192
3273
FSC to VT
MIX SYNC from SH
1524
1525
11
1
14
8
7270
PLL SYNC
9
NTSC - PAL
DECODER
to (DE)
HI-CH
PAL / NTSC
COMB FILTER
FSC = P
AL
2FSC = NTSC
from/to SH
to CF
1025
4,43MHz
1025
7250
7254
41
40
15
PHASE
SELECT
BP
REC
PB
PILOT
BURST
12
11
13
14
7026
3167
7268
2
12
13
6
7
5
+5VF3
6244
16
6250
7224
PAL
NTSC
3295
+5VF3
U CH YC
10
672KHz
2
1
from/to SH
2
CH (CHROMA OUT) toCF
U S-VHS
7200
Playback
Record
87
PBA
CHSP
CF
85
119
116
112
118
117
114
115
113
111
109
110
Reference
Oscillograms...4-85, 27
AU ......................4-36
CC ......................4-47
CF..........................15
CU ............4-70/77/84
DC ............4-67/75/82
DE ......................4-51
FE.......................4-27
HC ......................4-59
IO .......................4-33
OS ......................4-62
PS ......................4-23
SF ..........................21
SH .........................17
SP ................not used
TM ......................4-61
VP ......................4-62
VS ......................4-55
VT.......................4-39
Seiten "4-…" – siehe Basis-Service-Manual
Pages "4-…" – see Main Service Manual
