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GRUNDIG Service
GRUNDIG Service
Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs
Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of PCBs
M 49-DPL
M 49-DPL
HEADPHONE BOARD
L
G2
R
G3
RL
MU
+ 5 V
JK501
L501
L502
100UH
100UH
H308
8
7
6
5
1
2
3
4
CENTER
R
L
R
L
SURROUND
+
-
+
-
+
-
+
-
+
-
TO S201
AMPLIFIER BOARD
PAGE 3 - 21
TO S202/S205
AMPLIFIER BOARD
PAGE 3 - 21
(FUSIBLE)
IC BLOCK DIAGRAM
PAGE 3 - 32
IC301
LA1851N
IC302
LC72131M
IC303
BU1923F
PIN 1
2.1V
2.5V
2.5V
PIN 2
2.1V
0V
2.1V
PIN 3
7.9V
0V
2.5V
PIN 4
1.8V
0V
2.6V
PIN 5
0V
5V
5V
PIN 6
2.2V
1.2V
0V
PIN 7
7.9V
6.9V
0V
PIN 8
3.1V
6.9V
2.7V
PIN 9
2.2V
1.5V
0V
PIN10
6.5V
0.03V
0V
PIN 11
6.5V
0V
0V
PIN 12
6.9V
0V
5V
PIN 13
6.3V
0V
0.6V
PIN 14
2.9V
2.5V
2.5V
PIN 15
3V
5V
0V
PIN 16
1.5V
0V
2.5V
PIN 17
1.4V
1.1V
PIN 18
7V
1.6V
PIN 19
0.05V
0V
PIN 20
0.9V
2.5V
PIN 21
0.03V
PIN 22
0.9V
PIN 23
0V
PIN 24
2.1V
PIN 25
1.2V
PIN 26
7.9V
PIN 27
2.3V
PIN 28
2.3V
PIN 29
2.3V
PIN 30
1.2V
IC304
TDA2822M
PIN 1
3.9V
PIN 2
8.5V
PIN 3
3.9V
PIN 4
0V
PIN 5
0.6V
PIN 6
0V
PIN 7
0V
PIN 8
0.6V
PIN 1
4.1V
PIN 33
4.3V
PIN 2
4.4V
PIN 34
4.2V
PIN 3
4.2V
PIN 35
4.1V
PIN 4
4.1V
PIN 36
4.2V
PIN 5
4.3V
PIN 37
4.3V
PIN 6
4.2V
PIN 38
4.1V
PIN 7
4.1V
PIN 39
4.2V
PIN 8
4.3V
PIN 40
4.4V
PIN 9
4.2V
PIN 41
4.1V
PIN10
4.1V
PIN 42
4.2V
PIN 11
4.3V
PIN 43
4.4V
PIN 12
4.2V
PIN 44
4.1V
PIN 13
4.1V
PIN 45
4.2V
PIN 14
4.1V
PIN 46
4.3V
PIN 15
4.3V
PIN 47
4.1V
PIN 16
4.2V
PIN 48
4.3V
PIN 17
4.3V
PIN 49
4.3V
PIN 18
4.3V
PIN 50
4.3V
PIN 19
4.3V
PIN 51
4.3V
PIN 20
4.3V
PIN 52
4.1V
PIN 21
4.3V
PIN 53
4.1V
PIN 22
4.3V
PIN 54
4.2V
PIN 23
0V
PIN 55
4.1V
PIN 24
0V
PIN 56
8.5V
PIN 25
0V
PIN 57
4.2V
PIN 26
0V
PIN 58
4.3V
PIN 27
4.3V
PIN 59
4.3V
PIN 28
4.3V
PIN 60
4.3V
PIN 29
4.3V
PIN 61
4.4V
PIN 30
4.3V
PIN 62
4.3V
PIN 31
4.3V
PIN 63
4.3V
PIN 32
4.3V
PIN 64
4.3V
IC308
LC75396E
PIN 1
4.6V
PIN 33
0V
PIN 2
4.6V
PIN 34
0V
PIN 3
4.6V
PIN 35
0V
PIN 4
4.6V
PIN 36
4.6V
PIN 5
4.6V
PIN 37
0V
PIN 6
4.6V
PIN 38
0V
PIN 7
4.6V
PIN 39
1.5V
PIN 8
9.3V
PIN 40
4.5V
PIN 9
4.6V
PIN 41
4.5V
PIN10
4.6V
PIN 42
0V
PIN 11
4.6V
PIN 43
4.6V
PIN 12
4.6V
PIN 44
4.6V
PIN 13
4.6V
PIN 45
4.4V
PIN 14
4.4V
PIN 46
4.5V
PIN 15
4.4V
PIN 47
4.6V
PIN 16
4.6V
PIN 48
4.6V
PIN 17
4.6V
PIN 49
4.6V
PIN 18
9.2V
PIN 50
4.6V
PIN 19
2.4V
PIN 51
5.4V
PIN 20
0.7V
PIN 52
4.6V
PIN 21
0V
PIN 53
5.4V
PIN 22
4.6V
PIN 54
4.1V
PIN 23
4.6V
PIN 55
4.2V
PIN 24
4.6V
PIN 56
4.2V
PIN 25
4.6V
PIN 57
3V
PIN 26
4.6V
PIN 58
3.2V
PIN 27
4.6V
PIN 59
3V
PIN 28
4.6V
PIN 60
5.4V
PIN 29
4.6V
PIN 61
4.6V
PIN 30
5.1V
PIN 62
5.3V
PIN 31
2.2V
PIN 63
4.6V
PIN 32
1.8V
PIN 64
4.6V
IC309
LV1035
3 - 14
3 - 15