Service manual

– 25 –
CD-BA120/125
Figure 25 SCHEMATIC DIAGRAM (8/10)
7
8 9 10 11 12
TP
R373 1K
R372 1K R374 1K
R378 1K
IC302
LC72131
PLL(TUNER)
ST IND IF CONT FM/AM FM/AM
SD
MO/ST
AOUT
AIN
PD
VDD
FM IN
AM IN
DO CL DI CE
IF IN
11
10
9
8
7
6
5
43
2
019
18
17
16
15
14
13 12
C394
47/16
R379
2.2K
C393
1/50
R380
1.5K
C387
0.022
C392
0.001
L351
100µH
C385
0.01
C380
10/16
C386
330P
R377
47K
R395
47K
R376
1K
R360
4.7K
R386
22K
R359
1.8K
R387
5.6K
C396
100/10
C395
0.022
L352
100µH
C391
47/16
R384
5.6K
SWITCHING
Q360
KTA1266GR
R385
5.6K
R383
5.6K
TUN_L
CLK TUN_R CE
GND A +10V
DI DO
A GND
D GND
P21 12 - B
TO MAIN SECTION
T351
CF352
C370
1/50
R393
1K
C358
1/50
R355
3.3K
R388
3.9K
C357
2.2/50
C356
0.001
C355
22P
R352
1K
C399
0.022
C398
100/10
C354
0.022
C353
0.022
C350
0.022
R353
270
CF351
10/16
12
1110987654321
IC303
LA1832S
FM IF DET./FM MPX./AM IF
VSM
AM OSC OUT
FM IF IN
MO/ST
REG AM IF IN
GND
SD
STEREO
FM DET VCC IF OUT PHASE
PHASE (FM/AM)
L-CH OUT
R-CH OUT
MPX IN
MPX VCO
FM/AM OUT
AM LOW CUT
AM RF IN
AM OSC IN
FM AFC
AM MIX OUT
24 23
22
21
20
19
18
17
16
15
14
13
R364
8.2K
R363
8.2K
C363 0.022
C364 10/16
R362
10K
C372
1/50
R361
10K
C371
1/50
R357
470K
R356
1K
C366 0.001
C365 0.022
C362
3.3/50
X351
456kHz
C361
0.022
C368
1/50
C369 27P(UJ)
C367
1/50
R350
2.7K
C374
0.015
C373
0.015
1
2
3
CBGHEDIRA
+B
+B
+B
+B
+B
+B
+B
+B
AM IF