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PA 6
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
PA 6
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
GRUNDIG Service
GRUNDIG Service
NF-VERSTÄRKER-PLATTE
AF AMPLIFIER BOARD
230 VAC
P915
AMP-TRAFO
red
red
24.5 VAC
24.5 VAC
24.5 VAC
24.5 VAC
!
AC-POWER-AMP 1
AC-POWER-AMP 2
UNUSED
5V
0V
Prot.
5V
0V
Stby
5V
0V
Heat
K
22N
C127
K
22N
C27
F
0.1U/50V/10%
C03
85C
THP01
22k
R28
22k
R124
22k
R128
T4A-L
SI02
4.7R
R125
22k
R121
680R
R113
D116
1N4148
47k
R29
22k
R115
4.7k
R114
TRAFO
1
2
3
+
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-
IN+
IN-
STBY
MUTE
SHUTDOWN
THERMAL
PROTECTION
S/C
STBY
MUTE
22k
R112
F
0.1U/50V/10%
C125
33k
R116
K
47p/5%
C24
F
0.1U/50V/10%
C122
F
0.1U/50V/10%
C22
F
0.1U/50V/10%
C121
F
0.1U/50V/10%
C25
+
10U/25V
C114
F
0.1U/50V/10%
C21
+
10U/25V
C115
4.7R
R25
K
220p/5%
C12
1k
R111
22k
R21
680R
R13
1N5401
D02
22k
R15
4.7k
R14
+
1U/50V
C11
+
22U/50V
C23
F
0.1U/50V/10%
C126
+
47U/25V
C13
BOOTSTRAP
OUT
+VS
+PVS
-PVS
-VS
STBY-
IN+
IN-
STBY
MUTE
SHUTDOWN
THERMAL
PROTECTION
S/C
STBY
MUTE
TDA7294
IC01
22k
R12
K
10N
C09
K
47p/5%
C124
F
0.1U/50V/10%
C26
33k
R16
D16
1N4148
+
6800U/50V
C06
+
6800U/50V
C05
+
10U/25V
C14
0R
R31
1N5401
D03
+
10U/25V
C15
SPEAKER-B
1
2
9
8
7
6
5
4
3
2
1
P01
T4A-L
SI01
1k
R11
+
100U/25V
C29
BC546B
T28
BC546B
T29
SPEAKER-A
1
2
+B
+B
+B
-B
-B
-B
-B
HEAT
HEAT
CHASSIS
CHASSIS
CHASSIS
DC-PROT
13.10.99
STBY-AMP
OPTION-A
DC PROTECTION
13
7
5
11 12
2
3
4
10
9
1
8
15
6
14
13
7
5
11 12
2
3
4
10
9
1
8
15
6
14
TDA7294
IC101
-30V
+30V
+30V
-30V
0V
0V
0V
0V
5V3
5V3
5V3
5V3
+30V
-30V
0V
0V
0V
0V
24.5V~
24.5V~
Alle Spannungsangaben sind Näherungswerte
All voltages levels are aproximates
5V3
0V
5V
3 - 20
3 - 19
NF-Verstärker-Platte / AF Amplifier Board
-
/
.
zu/to
P360 / P361
Seite/page
3-7
#
zu/to P325
Seite/page
3-8
V
/
0
zu den Lautsprechern
to Loudspeakers
V
/
0
zu den Lautsprechern
to Loudspeakers
1
2
1
/
2