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