Service manual

Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams GV 30…, GV 50… 4 - 8 GRUNDIG Service
TO TUNER
AUDIO IN
(SURROUND)
OPTION
Q SOUND
ONLY FOR DUBBING
TO SY-A
SHORT TEST
Q2102
Q2101
REC H
SWD 9V
OSC
Q2103
T2101
TU NOR AD
ONLY FOR NICAM
DEC OUT R
DEC OUT L
CN872
JK881
AD IN FRONT L
AD IN FRONT R
4
2
Q2305
Q2304
REC H
SWD 5V
97
Q2202
Q2201
Q2203
Q2301
TO CN871
AD OUT R
R OUT
JK231
L OUT
JK231
TO CN871
AD OUT L
AD MUTE
FSC
FSC
45
6463
1
TO DECODER(TN-3,TN-6)
TU L
TU R
8
9
10
R OUT
L OUT
CN872
CN871
333435
AF SWP
PB ON
22
24
21
30 29
37
DET
18
17
16
15
14
13
REDUCTION
NOISE
PINK
REDUCTION
NOISE
PINK
AV2 R IN
AV2 L IN
NORM A CTL
HiFi DET
AV1 R IN
LPF
PB TRAP
LPF
PB TRAP
REC R
PB R
28
SW
LINER
TO SY-A
YCA AD MUTE
10
43
42
REC/PB
BIAS
REC
REC
PB
RECL
PB L
36
CONTROL
MUTE
62
96
98
7
6
99
Q2071
4
1
100
LINER AUDIOLA71590M(1/2)
80
78
76
Q2072 Q2075
T2001
CONTROL
LEVEL
&
OSC
BIAS
70KHz
MECHANISM BLOCK
E HEAD
FULL
R/P HEAD
AUDIO
E HEAD
AUDIO
CONT
BIAS
BIAS
AUTO
AMP
REC
DET
ALC
AMP
EQ
MUTE
AMP
LINE
PB
REC
ALC
60
59
53
57
27
61
OUTPUT SWITCH
ALC
MIX
TIMING
HOLD
PC
PB
REC
AGC
P
R
AGC AMP
HEAD
AFM CH2
HEAD
AFM CH1
AMP
CURRENT
LIM
MIX
AV1 L IN
CONTROL
SWITCH
DATA
INPUT SWITCH
A MUTE
TO SY-A
I2C DATA
I2C CLK
CLOCK
(AN3650FBQ)
HiFi AUDIO
SAP DET
MTX DET
REC R
REC
PB
LOGIC
PB
REC
LPF
REC RF
LIMIT
AUDIO
VCO
SW NOISE LPF
BPF
1.3MHZ
BPF
1.7MHZ
PC
LPF
REC RF
VCO
LPFSW NOISE
LIMIT
AUDIO
IC101
AD-6
IC231
FROM TB-1
ADIN
AD MUTE
TO SY-A
AUDIO OUT
TO TB-1
YCA AD MUTE
TO SY-A
Q2203
MUTE
LP
5
T2001
10
REC/PB
BIAS
96
97
98
7
6
99
Q2071
4
1
100
LINER AUDIOLA71590M(1/2)
80
78
76
Q2072 Q2075
CONTROL
LEVEL
BIAS
&
OSC
70KHz
MECHANISM BLOCK
E HEAD
FULL
R/P HEAD
AUDIO
E HEAD
AUDIO
CONT
BIAS
BIAS
AUTO
AMP
REC
DET
ALC
AMP
EQ
MUTE
AMP
LINE
PB
REC
EE
ALC
AD OUT
TO TUNER
FROM TUNER
AUDIO
TUNER
IC101
Blockschaltplan / Block Circuit Diagram
– Audio-Stereo
Blockschaltplan / Block Circuit Diagram
– Audio-Mono