Service manual

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CD-BA1200H
7
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Figure 29 SCHEMATIC DIAGRAM (10/10)
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
32
1
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5432
1
A GND D GND
IF CONT
FM/AM FM/AM
SD
CLK DO
TP
CE DI
MO/ST
ST IND
MO/ST
SM A+12V L R
VSS
AOUT
AIN
PD
VDD
FM IN
DO CL DI CE X IN
IF IN
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
VSM
AM LOW CUT
AM RF IN
AM OSC IN
FM AFC
AM OSC OUT
AM MIX OUT FM IF IN
X OUT
AM IN
1
3
2
MAIN PWB-A1(3/3)
12 345 678910
P23 12 - B
TO MAIN SECTION
FM SIGNAL
AM SIGNAL
B
+B
+B
+B
+B
+B
+B
+B
+B
AM IF
SWITCHING
C342
0.022
R358
3.9K
C362
3.3/50
C361
0.022
X351
456kHz
C368
1/50
R350
2.7K
C367
1/50
C365
0.022
C364 10/16
C363
0.022
L354
LOW PASS
FILTER
IC303
LA1832S
FM IF DET./FM MPX./AM IF
C373
0.018
C374
0.018
C369
27P(UJ)
R356
1K
R357
470K
R364
15K
C372
1/50
R362
1.2K
C371
1/50
R361
1.2K
R363
15K
R392
270
Q360
KTA1266GR
R391
270
C395 0.022
C396 100/10
ZD351
DZ5.1BSB
L352
100µH
R393
1K
C370
1/50
R387
5.6K
R355
3.3K
C358
1/50
C357
2.2/50
C355
22P
C356
0.001
C398
100/10
C399
0.022
C354
0.022
CF351
R353
270
C350
0.022
C352
10/16
R352
1K
CF352
T351
C353
0.022
R351
5.6K
R386
22K
C385
0.01
L351
100µH
R377
47K
R360
4.7K
C386
330P
R395
47K
R384
5.6K
C391
47/16
R383
5.6K
R385
5.6K
R376
1K
R359
1.8K
R370
1K
C387
0.022
R378
1K
82
5
0
R380
1.5K
C393
1/50
R379
2.2K
C380
10/16
IC302
LC72131
L
L(TUNER)
R372
1K
4
.
5MH
z
R381
10K
C397
0.022
C394
47/16
C392
0.001
R374
1K
R373
1K
C388
0.001
R388
3.9K