Service manual

Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams GV 30…, GV 50… 4 - 2 GRUNDIG Service
Blockschaltplan – Netzteil / Block Circuit Diagram – Power Supply
Start
SWD (PS) 37V
POWER CTL
SWD 5V
SWD (PS) -23V
HEATER +
HEATER -
CHASSIS
C5010
D5001
F5001
CONTROL
SWD (PS) 12V
SWD 9V
(POWER SAVE) PS CTL
Overvoltage
Protection
Fold Back
IC511
D5013
52
3
1
46
D5101
D5125
D5102 / L5102
D5110
(12V)
Q5103
Q5114
PR512
SWD (PS) 5V
Q5102
(PS) = Power Save
D5108
D5111
D5107
Q5101
Q5104
5
D5112
Q5115
Q5112
Q5111
D5103
R5110
D5104
R5120
Q5113
Q5110
D5115
D5109
D5116
(24V)
D5105 PR511
C5011
6.8V
+13V
+5.8V
97
Low Power = H
Stand By; On = L
(Low Power) Stand By = L;
On = H
D3731
C3078
25
RR371
Clock
Keyboard
DISPLAY
5
R5010
IC512
PR513
Q3701
ALWAYS 5V(2)
D5120
D5119
FLD DRIVE
KEY SCAN
POWER DOWN
BACK UP 5V
IC304
RESET
ALWAYS 5V(FL)
IC301
IC307
10
80
36
System Controller
D5118
ALWAYS 5V(1)
6.2V
ca.5.6V
5.6V
Q3020 Q3021
C3037
IC371
PW-A
33V
D6001
R6005
VA-A
51 73
(5.6V)
2
3
1
IR
SWD 5V(AD)
Audio
IC101/75
Q5120
R5126
R5119
R5108/
R5109
R5002 R5003
R5105
R5106
R5116/
R5117
IC501
R5104
8
50
20
8
S3501
TB-1
Start &
Safety
Euro- AV TV
Euro- AV DEC
Soft Drive Circuit
7
D5124
(15V)
ALWAYS 5V(1)
SWD(PS)13V
D5112)
(5,6V)
R5015
D5011
D5010
R5017
R5014
R5011
R5012
C5005
C5007
L5001
C5107
L5101
C5101
C5104
C5103
Loading
Drum
R3052
Capstan
D3501/D3502
SY-A
SWD(PS) 13V(MC)
SWD(PS)13V(MC)
81
19
Q3103/Q3105
(Option)
C5105
C5106
4
8
26
PS LED L
R5127
D5113
13
21
16 18
23
16
7
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ALWAYS 5V(1)
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