Sharp CD-BA300 - Troubleshooting Chart; General Troubleshooting; Component-Specific Issues

– 29 –
CD-BA300
Figure 29 SCHEMATIC DIAGRAM (10/10)
7
8 9 10 11 12
TO MAIN SECTION
P19 12-C
24 23 22 21 20 19 18 17 16 15 14 13
12 11 10
9 8 7 6 5 4 3 2 1
22 21 20 19 18 17 16 15 14 13 12
11
10
9 8 7 6 5 4 3 2 1
DO A_GND GND CLK CE DI TUN_L TUN_R A_10V
CONT IF FM/AM FM/AM
SD
MAIN PWB-A (2/2)
MO/ST
ST IND MO/ST
VSS
AOUT
AIN
PD
VDD
FM IN
AM IN
DO CL DI CE X IN X OUT
IF IN
REG
AM IF IN GND SD STEREO FM DET VCC IF OUT PHASE (FM/AM) PHASE
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
TP302
9 2 1 3 65478
+B
+B
+B
+B+B
FM SIGNAL
AM SIGNAL
IC303
IC302
LC72131
1
3
3
C388
0.001
R386
22K
R360
4.7K
C386
330P
R395
47K
R375
470
2
C
H)
R
382
1
50
C397
0.022
R385
5.6K
Q360
KTA1266 GR
R391
270
X352
4.5MHz
R381
10K
R378
1K
L351
100µH
R377
47K
R359
1.8K
R376
1K
R387 5.6K
R372
1K
C394
47/25
C392
0.001
C387
0.022
R374
1K
R373
1K
R380
1.5K
C393
1/50
R384
5.6K
C391
47/25
R383
5.6K
R379 2.2K
C380
10/50
C385
0.01
1
C
H)
C357 2.2/50
C356
0.001
C398
100/10
C399 0.022
C353 0.022
R355
3.3K
R393
1K
C370
1/50
R388
3.9K
C355
22P
C354 0.022
CF351
R353
270
X351
456kHz
R365
10K
C366 0.001
C362 3.3/50
C361 0.022
R352
1K
R361
10K
T351
AM IF
R364
10K
C372
1/50
C363 0.022
R363
10K
C374 0.015
C369
27P
CF352
C368 1/50
R356
1K
R362
10K
C371
1/50
C373
0.015
5
8
K
C364 4.7/50
C352
10/50
C367
1/50
C365 0.022
C342
0.022
C350
0.022
C351
0.022
R351 5.6K
R357 470K
R350
2.7K
R392 270
IC303
LA1832S
FM IF DET./FM MPX./AM IF
C358
1/50
C395
0.022
C396
100/10
ZD351
DZ5.1BSB
L352
100µH
IC302
L
(TUNER)