GRUNDIG Service
Fine Arts Audion
4 - 53
NF-Endstufen-Platte LSP 3 / AF Amplifier Board LSP 3
K
22N
C127
K
22N
C27
F
0.1U/50V/10%
C03
85C
THP01
(SI 03)
22k
R28
22k
R124
22k
R128
T4A-L
SI02
22k
R121
680R
R113
D116
1N4148
47k
R29
22k
R115
4.7k
R114
TRAFO
+
1U/50V
C111
F
0.1U/50V/10%
C04
+
22U/50V
C123
1N5401
D04
1N5401
D01
K
220p/5%
C112
22k
R24
+
47U/25V
C113
BOOTSTRAP
OUT
+VS
+PVS
-PVS
-VS
STBY-GND
IN+
IN-
STBY
MUTE
SHUTDOWN
THERMAL
PROTECTION
S/C
STBY
MUTE
13
7
5
11 12
2
3
4
10
9
1
8
15
6
14
TDA7294
IC101
22k
R112
33k
R116
K
47p/5%
C24
F
0.1U/50V/10%
C122
F
0.1U/50V/10%
C22
F
0.1U/50V/10%
C121
+
10U/25V
C114
F
0.1U/50V/10%
C21
+
10U/25V
C115
K
220p/5%
C12
1k
R111
22k
R21
680R
R13
1N5401
D02
22k
R15
4.7k
R14
+
1U/50V
C11
+
22U/50V
C23
+
47U/25V
C13
BOOTSTRAP
OUT
+VS
+PVS
-PVS
-VS
STBY-GND
IN+
IN-
STBY
MUTE
SHUTDOWN
THERMAL
PROTECTION
S/C
STBY
MUTE
13
7
5
11 12
2
3
4
10
9
1
8
15
6
14
TDA7294
IC01
22k
R12
K
10N
C09
K
47p/5%
C124
33k
R16
D16
1N4148
+
6800U/50V
C06
+
6800U/50V
C05
+
10U/25V
C14
0R
R31
connection
Net-
NET01
1N5401
D03
+
10U/25V
C15
SPEAKER-B
P01
zu / to P9C
S/P 4-47
T4A-L
SI01
1k
R11
+
100U/25V
C29
BC546B
T28
BC546B
T29
SPEAKER-A
+B
+B
+B
-B
-B
-B
-B
HEAT
CHASSIS
CHASSIS
CHASSIS
DC-PROT
STBY-AMP
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
DC PROTECTION
POWER AMPLIFIER BOARD
10k
R05
10k
R06
02.08.01
S/P 4-41
22V~
+30V
5V -> 0V Mute
-30V
22V~
15V
0V
0V
0V
-30V
+30V
5V ->
0V Mute
5V ->
0V Mute
15V
0V
0V
0V
-30V
+30V
5V ->
0V Mute
5V ->
0V Mute