Inhaltsverzeichnis
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Schaltpläne und Druckplattenabbildungen / Circuit Diagrams and Layout of PCBs
* CT104
BC848C
* CR114
603
47K
* CR113
603
10K
3
15
14
13
12
11
ABSTIMM-
QUADRATUR
STOP-LOGIK
DEMOD.
FM-AUS
VERSTIMM-
STUMM-
DETEKTOR
SCHALTUNG
KLIRRFAKT-
KOMP.
6
7
8
2V1
4V0
1V25
MW 1,0V - ca. 7V
LW 1,3V - ca. 5V
8V1
* CR627A
603
* CT606A
10R
BF543
CC617A
805
G
1N0
AL
0
CR624A
603
47K
* CR621A
*
CT603A
BC848C
* CC613A
603
10N
101
12
8
50khz
1MHZ
4V2
9
10
* CR628A
603
10R
CC618A
D
603
100N
S
0V75
8V2
* CL603A
5UH6
* CC622A
805
1N0
8V2
CR633A
CD603A
603
3K3
KV1561
603
680K
* CT604A
BC848C
* CC628A
805
1N0
CT607AL
BC818/40
102
L101
1
7
3
9V1
2V1
2
F601A
4
GND
L604A
A2
3
4
E
1
A1
3
2V1
7
1
6
8
CR645A
603
5K6
1
2
3
4
3K
DOUBLE
GAIN CON-
STANDBY
BALANCED
TROLLED IF
SWITCH
MIXER
AMPLIFIER
+
VR(AGC)
V1 V2 V3
GAIN-
CONTROLLED
RF STAGE
INTERNAL
SUPPLY
VOLTAGES
V1
20
19
18
17
4V0
CC637A
*
603
22N
CC638A
CC641A
603
805
100N
180P
NP0
* CT608AL
BC818/40
C644AL
+
10U/16V
103
3V4
FM_IN
24
CC701
19
HFREF
3V4
603
22N
25
AM_IN
2V3
9
OSCIN
2V3
OSCOUT
10
ADDR
20
SCL
12
SDA
13
IF_AM
14
IF_FM
15
3V4
* CT704AL
DTA143ZK
0V5
1V4
5
6
7
8
12K
7K
V2
7K
VR(AGC)
VR
8305-841-572
BALANCED
AF PRE-
AGC
FULL-WAVE
AMPLIFIER
AMPLIFIER
DETECTOR
INDIKATOR
DRIVER
CONTROLLED
V3
OSCILLATOR
V3
16
15
14
13
4V1
8
1
7
MW
3
8
1
7
LW
CT609AL
BC848C
3
104
GRUNDIG Service
MS 502
SWITCH
AM/FM
SWITCH
SWM/DIR
REF.OSCILLATOR
I2C BUS
INTERFACE
14 BIT PROG.CNT
1
4K7
9V1
4
* CR709A
603
100K
4V4
9
10
TDA1572T
IF
AMPLIFIER
* CIC601A
12
11
CR649AL
603
47K
* CC652A
603
100N
701
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