RCD 405
Platinenabbildungen und Schaltplänen / Layout of PCBs and Circuit Diagrams
GRUNDIG Service
3 - 6
TO MAIN BOARD FC506
4A
TO MAIN BOARD FC201
2A
2.5V
2.5V
2.5V
12V
12V
12V
1.5V
1.5V
3.2V
1.5V
4V
3.3V
2.5V
2.5V
2.5V
2.5V
VOLTAGE MEASURED RELATIVE TO GND ON FM.
3.4V
2.7V
2.5V
4V
4V
5V
2V
XOUT
XIN
VCC
GND
GND
GND
GND
TO MAIN BOARD FC301
1A
220R
R101
3K6
R104
1K
R113
6K2
R114
100K
R107
10K
R103
10K
R106
4K7
R115
10K
R102
47K
R105
4K7
R88
4K7
R91
3K3
R86
3K3
R87
K
22N
C85
K
10N
C88
K
22N
C92
K
22N
C96
K
22N
C93
K
22N
C91
K
22N
C98
K
10N
C105
C
150P
C103
1.8K
R118
F
0U1
C114
F
0U33
C113
7
6
AMP
POST
Q.D.
DET
AM-ZF
MIX
RF
REF
OSC
BUFFER
OSC
S-METER
NARROW
AGC
DRIVER
LED
S-METER
8
15
9
12
16
17
19
14
24
23
22
5
3
2
1
4
13
18
20
FM - IF
BUFFER
BUFFER
I F
I F
LA1266
IC3
1N4151
D43
GL7812
IC5
100K
R119
100K
R123
+
10U/50V
C86
+
2U2/100V
C94
+
1U/100V
C104
+
1U/100V
C97
+
1U/100V
C95
+
220U/16V
C112
+ C75
+
2U2/25V
C76
+
4U7/50V
C77
+
4U7/50V
C78
BC548B
T23
6
8
9
1
2
12
4
F9
6
8
9
1
2
12
4
F11
DATA
CLK
FM MPX
VCC
VCC
9 10
11
6
13
14
3
4
7
8
12
5
SAA6579T
IC4
2
16
MUTING
VCC ON
OUTPUT
MUTING
OVER
OL
SWITCH
STEREO
TRIGGER
DRIVER
LAMP
9
10
11
12
13
14
4
K
1
6
3
F7
4M332
Q3
C
82P
C109
C
47P
C107
C
560P
C99
+
2.2U/100V
C108
C
100N
C102
22U
L21
2.2K
R121
1N4148
D29
10K
R116
1.8K
R118A
1.2K
R125
+12V
+12V
+12V
AM-OSZ
FIELDSTG
AM-AF
SEARCHLV
STEREO
+5V
+5V
STEREO
DATA-IN
CL
CE
RDS.CLK
RDS.DATA
FM.MPX
FM-MPX
ANT/CABLE
DATAOUT
R CH.
L CH.
J
K
H
G
F
G
D
C
1
2
3
4
5
6
7
8
1
1
2
2
3
3
4
RDS DEMODULATOR
11
10
9
MUTE
STEREO
DA-OUT
CL
DA-IN
CE
SAA6579T
IC4
+19V
F
S
PAGE 3 - 13
PAGE 3 - 13
PAGE 3 - 11
