GRUNDIG Service
3 - 25
GV 900…, GV 940…
Fehlersuchdiagramme / Troubleshooting / Schémas de dépistage d‘erreurs
PC 5V
AT12V
M12V
STBY+CTL
AT21V
(26V)
M12V/ 20V
X360_SPEED
Q9909
Q9903
X260_SPEED
AT45V
Q9901
PC9V
STBY 10.5V
AT 5V
STBY 5V
P_CON
PC5V
AT-25V
STBY_CONT_SKEW (L)
STBY-25V
F
FILAMENT-
POWER_FAIL (H)
AT 5V
D9902
D9901
Q9902
D9904
Q9910
Q9904
Q9802
D9903
Q9701
D9603
D9604
D9612
Q9905
D9907
Q9906
D9908
Q9704
Q9908
D9909
Q 703
Q9603
IC9601
IC901
D9607
Q9805
D9802
Q9801
D9910
D9601
BACK UP 5V
RESET
IC703
Q704
D9702
SYSTEM CONTROL
PROCESSOR (IC701)
FIP
DRIVER (IC801)
D9602
R9601
Over Voltage Protection
D9701
Q1401
Q1402
I-Source
STBY 5V
96
91
13
94
Fold Back
73
36
25
1
12
18
16
5,6V
6,2V
10V
11,2V
21V
AT = All Time Voltage
AT5V
Keyboard
R/C Receiver
87
88
5
Keyboard Control / Drive Control
Capstanmotor
Loading-
a. Drum-
Motor
RCM
801
D702
PC33V
9V
10
AV
-2
AV
-1
Q1804
Q1803
Euro-AV Control
AV LINK DET.
79
85
20
8
AT5V
Start
End
Mechanism
Q701
Q702
D701
AT5V
E
C
B
E
C
B
E
C
B
NPN
D9611
(P Con; U / Function)
L= Stby ; LP Stby
H= On
E
C
B
PNP
C713
= LPR Stby
= Stby / On
L
H
Display
Q9903
SAT_OUT
8
Q7801
SA
T_REMOTE
D7881; D7882
SE Models only
Key 1
Key 2
TUMOD
TU / IF
4
1; 16
7; 14
AT 5V
PC 5V
!
!
!
Netzteil
Power Supply
Alimentation