GRUNDIG Service
FREAXX 50 RRCD 4305 SPCD
3 - 5
ST IND
MUTE
PLL CE
PLL CK
PLL DA
PLL CD
ST=0
MU=1
RCH
GND
LCH
RA8V
0
0
FM
MW
LW
P0
P1
OPEN
OPEN
OPEN
OPEN
12V IN
TUNER 8V
ST/MO PCB
+
C520
4u7
R518
12K
R519
12K
+
C538
3u3
R521
12K
FMMIX
5
GND1
6
IF
OUT
7
STI
ND
8
AMMIX
9
FMI
F
10
AMI
F
11
AG
C
12
FMDET
13
PILO
T
14
COMP
15
LCH
16
RCH
17
MPXIN
18
DECOUT
19
FMOSC
20
IC502
LA1823
0
+
C543
4u7
R516
10
Q506
9015C
C540
10n
Q504
9018
R531
1K
R554
1K
CF503
SFU450B
C544
1n2(M)
R552
10K
D504
5V1
C518
20n
C553
20n
CF505
10.7MS3
F502
10.
7MS3
C554
10n
R536
15K
C535
2n
R555
330
C551
68P(NPO)
Q515
9014C
R556
33K
R559
120
3
2
1
6
4
7
T509
8290
CF504
CD
A10.
7MG1
+
C537
u22
Q505
9014C
R527
68K
R528
22K
R541
27
D503
1N5817
C519
1n
6
P
R532
100K
1
2
3
4
5
6
7
8
SO502
R560
100K
1
2
3
4
SO501
R522
12K
C547
1n2(M)
R543
68K
+
C536
u22
C542
6n8(M)
R526
68K
R529
100K
R525
120
C549
3P
+
C541
220u
+
C539
22u
C556
10P
L503
10uH
C552
1n
Q514
9018F
SW551
SS12F65
FMANT
PIN
+
C546
4u7
C545
6n8(M)
1
2
3
SO503
1
2
3
CN551
R517
3K3
R558
2K2
1
2
3
4
1
2
3
4
R524
100K
R523
100K
22-Sep-2003
0,0V
3,5V
0,0V
0,0V
0,1V
0,0V
4,7V
5,0V
4,7V
5,0V
1,3V
1,3V
1,3V
1,2V
4,1V
0,5V
4,7V
5,0V
4,7V
0,0V
1,1V
1,3V
1,3V
1,3V
1,3V
1,3V
1,3V
0,0V
4,1V
3,4V
4,3V
4,7V
