Grundig RCD 400 Serviceanleitung Seite 26

RCD 400
20 18 13 4
2.5V 2.5V
I F I F
11
BUFFER BUFFER
10
21
RF
MIX AM-ZF
OSC
OSC
REF
BUFFER
22 23 24
4V 4V 3.2V 1.5V
LA3401
14 13 12
5V 5V
LAMP
DRIVER
TRIGGER
STEREO
SWITCH
MUTING
ONTROL
ANGE OVER OUTPUT
VCC ON
MUTING
3.2V
8 9 10 11
C77
4U7/50V
R86
+
3K3
C78
R87
+
3K3
4U7/50V
GRUNDIG Service
i
F7
4 6
K 1
3
C96
K
22N
R104
3K6
1 2 3 5 6
2.5V 2.5V 12V 12V 12V
POST
FM - IF Q.D.
AMP
DET
IC3
LA1266
LED
NARROW
AGC S-METER
DRIVER
S-METER
14 19 17 16
1.5V
R103 R106
10K
+5V
R116 D29
10K 1N4148
Platinenabbildungen und Schaltpläne / Layout of the PCBs and Circuit Diagrams
+12V
+12V
7
LA1266
12
3.3V
1U/100V
9
4V
+
C104
15
1.5V
8
C
D
F
S
R115
10K 4K7
RDS DEMODULATOR
L21
22U
2.5V
5 12
IC4
IC BLOCK DIAGRAM
PAGE 3 - 7
9 10 11 6
4 12
J
2
1 9
4 12
K
2
1 9
IC5
GL7812
3 1
2
+12V
+5V
R118A
3.4V
T23
BC548B
1.8K
2.7V
R118
1.8K
G
F
C99 C108
C +
560P 2.5V 2.5V 2.5V 2.2U/100V
8 7 4 3
IC4 CLK
SAA6579T
16
SAA6579T
DATA
2
13 14
Q3
4M332
F9
G
6
L CH.
8
F11
H
6
R CH.
8
VOLTAGE MEASURED RELATIVE TO GND ON FM.
4
3
+19V
2
1
11
CE
10
DATAOUT
9
CL
DATA-IN 8
SEARCHLV
7
FIELDSTG 6
STEREO 5
D43
4
MUTE
1N4151
3
ANT/CABLE
2
RDS.CLK
RDS.DATA 1
3 - 12