Inhaltsverzeichnis
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Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
Blockschaltbild Tuner / Block Diagram Tuner
+FM
6
3
+B
AGC
A
1102
1
Ant1
F
a
4
GND
f
= f
+ f
0
in
if
MT
VT
MT
5
AM-RF
5102
MW
2106
5103
LW
B
3 - 7
M 7-C / M 17-C / M 27-C
VCC1
VDD
7
23
35
VCC1
VDD
FM-IF2
FM FRONTEND
STABILIZER
10,7MHz
IF Out
7
37
FM-IF1I In
FM
IF1
F 10,7 MHz
5
FM Osc.
if
F o
CHARGE
Osc Out
8
PUMP
6
8
I-Tune
AM
OSC.
2
AM-RF
C
Ripple
AM-Osc.
1
6
AM-OSC
5123
MW
5122
LW
MW/LW-SELECTION
GRUNDIG Service
Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
IF-AM
IF-AM
AM-DET
10,7MHz
450kHz
450kHz
450kHz
5111
5112
5114
34
33
38
40
41
36
V Stab B
FM-IF2I V Stab A
AM-MIX Out
AM-IF1 In
AM-IF2
FM
AM
IF2
IF
AM
FM
FRONTEND
DET
AM
MIXER
AGC
FM GND
RF GND
IF GND
Dig. GND
RF GND
FM-Demod
AGC
3
4
17
26
42
18
44
10,7MHz
3 - 8
2
1
VCC2
TEA5762
32
19
20
22
AM-AFC
AFC-
AFC+
VCC2
29
WRITE Enable
AFC
28
DATA
27
CLOCK
31
P1
AM
DET
39
FM/AM
CONTROL
30
P0
Mono/
Stereo
24
Left
14
Mute
13
STEREO
DECODER
Right
15
XTAL
OSC
PILOT
16
Filter
Fieldstrength
AF-Out
Indc.
MPX-In
VC0
LPF
10
21
25
11
9
12
75kHz
+FM
3142
7
VCC1
ANTI BIRDY FILTER
VC0
VDD
RDS
VCC2
M 7-C / M 17-C / M 27-C
1121
1
GND
2
RDS
RDS
3
ENABLE
4
DATA
5
CLOCK
6
STEREO
3
4
1124
1
LEFT
2
GND
3
RIGHT
4
VCC
GRUNDIG Service
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Inhaltsverzeichnis
