Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV 27 …, GV 47 …, GV 7…
Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
GV 27 …, GV 47 …, GV 7…
4 - 29
GRUNDIG Service
4 - 30
GRUNDIG Service
Chassisplatte – FM-Ton / Chassis Board – FM Sound (AF)
Chassisplatte – Kopfverstärker / Chassis Board – Head Amplifier (HA)
92
93
chip components
...
OSCILLOGRAMS
..
95
91
96
97
98
89
90
AF(40393)
to FV
to IO
for 2-SCART STEREO only
PS
IO
DE/DC
HA
FV
AL
... V MEASURED IN PLAYBACK MODE
3,9V
6V
6V
3,9V
3,9V
5V
0V
12V
... V MEASURED IN RECORD MODE
(HIFI-AUDIO-PROCESSOR)
not used
Pos. 2878 & 2879 for cinchin only
Pos. 2861 & 2862 for 2scart only
FOR STEREO ONLY
3,8V
3,8V
3,8V
3,8V
3,8V
3,8V
3,8V
3,8V
1,6V
1,9V
2,8V
2,1V
3,7V
0V
3,8V
3,8V
3,8V
3,8V
3,8V
3,8V
3,8V
0,8V
6V
6V
3,8V
0V
3,8V
6V
7850 C10
3863 H13
3862 H14
3861 B 9
3860 B 9
3857 I12
3856 G13
3855 G13
3854 E13
3853 E13
3852 D13
3851 D13
3850 B 6
3829 B 8
3828 B 7
2879 F 2
2878 F 4
2877 H13
2876 G13
2875 I12
2874 I13
2873 F13
2872 F13
2871 F13
2870 E12
2869 E14
2868 E12
2867 D13
2866 D12
2865 D14
2864 D12
2863 I 8
2862 G 2
2861 G 3
2860 G 2
2859 F 3
2858 F 2
2857 F 3
2856 E 3
2855 D 3
2854 B 6
2853 B 6
2852 B 6
2851 B 5
2850 B 5
2832 I11
2829 B 8
2811 B 7
4
5
1
6
7
8
9
10
11
12
13
14
2
3
H
G
F
E
D
C
B
A
I
H
G
F
E
D
C
B
A
I
4
5
1
6
7
8
9
10
11
12
13
14
2
3
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDAF
GNDD
GNDVS
GNDD
25V
220n
2868
25V
22n
2856
25V
22n
2855
25V
220n
2858
25V
220n
2859
25V
220n
2860
25V
220n
2861
25V
220n
2862
25V
4n7
2869
25V
4n7
2865
25V
220n
2864
25V
22n
2853
25V
22n
2851
25V
220n
2857
25V
220n
2863
25V
220n
2878
25V
220n
2879
50V
100p
2811
25V
100n
2832
25V
100n
2829
3862
100k
3863
100k
3857
3M3
3850
1%
TK 50ppm
39k
3855
100k
3856
100k
3851
47k
3854
3k9
3852
3k9
3853
47k
3861
100
3860
100
3828
10k
3829
10k
SCL
SDA
TRIA/ALI
HP2
AOUT2L
AOUT2R
AMLP
AMLR
AMCO
12VA
AOUT1R
AOUT1L
5VA
AIN2R
AIN2L
AIN1R
AIN1L
AF2
AF1
FMAP
FMAR
AINFL
AINFR
7850
TDA9604H/N1
10
11
12
13
14
15
16
17
18
19
1
20
22
23
24
25
26
27
28
29
2
30
31
32
33
34
35
36
37
38
39
3
40
41 42
43
44
4
5
6
7
8
9
21
RFratio
AFM
RFC Mute
Line Sel
Dec.Sel
Volume L
Volume R
DOC
EOSel
E2R
E2L
TUR
E1R
E1L
TUL
Out Sel
M
M
NILevel
HF AGC
audio LPF
audio LPF
M
SAP
E3R
E2L
E1R
E3L
E1L
CIR
CIL
TUR
TUL
E2R
+
+
Reduction
Reduction
Noise
Noise
+
M
DCR
DCL
+1dB 12V
+
+
1,7/1,8
1,3/1,4
BPF
BPF
Iref
Normal Sel
+
Input Sel
S&H
DCR
DCL
+8dB
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
supply & Vref
2
PLL
PLL
S&H
S&H
CCO
CCO
I C
10u
2877
16V
10u
2876
16V
100u
2852
16V
100u
2850
16V
10u
2875
16V
10u
2874
16V
10u
2872
16V
10u
2873
16V
10u
2871
16V
16V
47u
2870
10u
2867
16V
47u
2866
16V
2u2
2854
50V
12VA
5VA
5VA
12VA
99
Left Channel
Right Channel
Record
Right Channel
Left Channel
Playback
... chip components
...V MEASURED IN PLAYBACK MODE
...V MEASURED IN RECORD MODE
…
OSCILLOGRAMS
1k2
1k1
1
2
14k 1%
3/0
1
5
1
5
27k 1%
18k 1%
4/2
2/2
7
4
6
6
1
1
6
1
2
2
2
18k 1%
18k 1%
22k 1%
3154
2/0LP
2/0
4/0
1
1
6
93
92
TO ROTATING TRANSFORMER
to AF
from DE/DC
from PS
SWIN
TRIV
(SWITCH)
(HEADAMPLIFIER-AUDIO)
(HEADAMPLIFIER-VIDEO)
(INVERTER)
SH1
SHC
SH2
LH2
LHC
LH1
AH1
AH2
AHC
for STEREO only
to DE/DC
to DE/DC
from AF
from DE/DC
from DE/DC
from DE/DC
to VS,VS-S
from VS,VS-S
2,8V
2,5V
4,4V
1,2V
3V
2,4V
2,1V
2,1V
5V
0,7V
0,7V
0V
0V
4V
4V
4V
0V
0V
0V
0V
0V
0V
Rec. SP
Rec. LP
0,2V
0,2V
0,2V
0,2V
0,2V
0,2V
0,2V
0,2V
0,6V
0,6V
0,6V
0,6V
0V
0V
0V
0V
4V
4V
0V
0V
4V
2,9V
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
HA(40393)
9071 B 7
9070 J 1
7153 C 9
7151 F 3
7150 D 2
7085 D15
7080 F11
7020 J 3
5150 C 6
5080 H10
3165 I 6
3164 I 6
3163 H 7
3162 G 9
3158 B 9
3157 I 9
3156 J 3
3154 K 2
3153 I 1
3152 C 3
3151 B 6
3087 D16
3086 E10
3085 C15
3084 D14
3083 D15
3082 G15
3081 C13
3080 C12
3051 I 2
2163 C 4
2161 H 6
2160 H 5
2159 H 6
2158 H 7
2157 I 5
2156 I 4
2155 I 9
2154 J 3
2153 C 3
2152 C 5
2151 C 5
2150 J 1
2089 H15
2087 E10
2086 H10
2085 H11
2084 H13
2083 H13
2082 H12
2081 H11
2080 D13
1916 J 5
1915 K 5
4
5
6
7
9
10
11
12
13
14
15
16
2
3
H
G
F
K
E
D
C
B
J
I
H
G
F
K
E
D
C
B
J
I
4
5
6
7
9
10
11
12
13
14
15
16
2
3
3087
100k
50V
10n
2150
25V
220n
2151
50V
22n
2153
50V
10n
2154
50V
10n
2155
50V
10n
2160
50V
10n
2161
50V
10n
2156
50V
10n
2157
50V
10n
2158
50V
10n
2159
50V
10n
2081
50V
10n
2082
25V
100n
2085
50V
100p
2163
50V
10n
2087
50v
22p
2080
50V
10n
2083
50V
10n
2084
50V
220p
2089
3162
0E
3165
0E
3164
0E
3163
0E
3151
100k
3051
220k
3152
39k
3153
10k
3154
3156
330E
3157
330E
3080
5E6
3158
4k7
3086
330E
3082
100E
3081
560E
3083
4k7
3085
3084
4k7
5VASW
FMPV
CSYNC
FMRV
SWIN
TRIV
FMAP
HP2
IRAF
FMAR
ENVC
5VASW
5VASW
5VASW
5VASW
BFS20
7153
BC847B
7085
MMUN2212LT1
7020
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
1915
1
2
3
4
5
6
7
8
9
STV5742DT
7150
1
16
8
7
10
6
11
12
5
4
13
3
14
2
15
9
CAGC
REC
I_OUT
C2
SWIN
H1
VCC
GND1
SWR
YCPB
H2
GND2
C1
CSYN
V2
TRIV
V1
REC
IN
STV5744AD
7151
SP
REC
SP
LP
SP
SP/LP H1/H2
SP
LP
LP
LP
SP
SP
REC
IN
REC
LP
LP
ENVC
20
1
I_OUT
13
8
CAGC
I_OUT
H1
SWIN
7
14
H1
VCC
6
15
SWR
YCPB
GND1
5
16
V2
H2
GND2
4
17
H2
CSYN
18
3
I_OUT
V2
TRIV
VCC
19
2
V1
REC
11
10
12
9
I_OUT
VCC
V1
1916
1
2
3
4
5
16V
47u
2152
16V
47u
2086
9070
9071
10%
47u
5150
5%
47u
5080
X
X
X
X
X
X
X
X
X
HA 2/0
HA 2/2
HA 3/0
HA 4/0
HA 4/2
1 2 3 4 5
X
X
X
6
X
X
7
Record (Left/Right Channel)
Record (Luminance / Chrominance)
Playback (Left/Right Channel)
Playback (Luminance / Chrominance)
Reference
Oscillograms ....4-38
AF....................4-29
AL ....................4-25
DC ...................4-35
DE ...................4-33
FV....................4-21
FM ...................4-24
HA ...................4-30
IO.....................4-27
OS ...................4-24
PS....................4-31
QMB ................4-15
QNIC ...............4-36
VP....................4-24
VS....................4-25
VS-S ................4-28
