Adjustment; Schematic Diagram - Sharp CD-CH1500 Service Manual

CD-CH1500
A
C389
0.001
B
C
C2B_CE
C2B_DI
C2B_CL
C2B_DO
D
KTA1266 GR
SWITCHING
E
C2B_DI
E
C2B_DO
F
C2B_CL
G
F
C2B_CE
H
D_GND
I
VSM
J
A_+B +B
K
TUN_L
L
A_GND
M
TUN_R
N
G
MAIN PWB-A(1/3)
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.
1
C301
0.001
C341
0.1
L342
2.2µH
+B
+B C384
0.001
C382
15P(CH)
C312
100P
(CH)
2.3V
C310 1
X IN
100P
R374
0V
2 NC
(CH)
1K
R373 0V
3
CE
1K
0V
4 DI
0V
5
CL
R372
R371
1K
4.7K
4.7V 4.7V
6
DO
Q371
D352
DS1SS133
0.1V
7 FM
R384
3.5V
C391
8 MW
5.6K
47/16
4.1V
9 MUTE
R385
3.6V
5.6K
10 MO/ST
4.7V
11
ST IND
R383
R376
5.6K
1K
10V
10V
Q360
2SB562 C
R395
SWITCHING
47K
R360
4.7K
PLL(TUNER)
+B
+B
C320
0.047
2
Figure 20 SCHEMATIC DIAGRAM (1/11)
FM SIGNAL
C314
0.0047
C315
0.0047
C316
0.1
+B
C317
0.001
C390
R327
0.001
33
C321
R369
100/16 0.1V
1.8V
820
Q302
KTC3194 Y
C345
OSC BUFF
0.022
C318
100P(CH)
C346
0.022
TP301
C347
0.022
R345
4.7K
VT_CK
C381
12P(CH)
X352
R382
4.5MHz
150
C397
2.3V 0.022
X OUT 22
0V R381
VSS
21
10K
1.3V
AOUT
20
C393
C394
1/50
47/16
R380
1.5K
C392
0.8V
19
AIN
0.001
0.8V
PD 18
R379 C380
IC302
2.2K
10/50
4.7V
VDD 17
2.3V C387
FM IN 16
0.022
0V
AM IN
15
C385 L351
14
NC
0.01 100µH
4.7V
R393
IO2 13
1K +B
0V
IF IN 12
R377
47K
R378
82K
C386
330P
+B
(CH)
IC302
LC72131
+B
+B
C370
1/50
+B
R392 R389
390 3.9K
R391
390
DZ351
DZ5.1BSB
3 4
– 20 –
FM
AM SIGNAL
1 2 3
1
D310
DS1SS133
C303
C308
10P(CH)
C304
5P(CH)
0.01
FM RF
L312 C306
0.001
R311
C305
100K
R313
5P(CH)
33K VD302
C325
SVC211C
15P(CH)
R302
T311
C327
10
0.1
C326
18P(CH)
C324
T312
4P(CH)
FM IF
VD303
SVC211C
C313
22P
R309
(CH)
10K
+B +B
C337
0.022
AM OSC.
T306
C335
330P(CH)
C334
15P(CH)
1
2
3
CF302
R323
68K
R336
10K
R351
C351
5.6K
0.022
C352
10/50
2V 3V
1
FM IF IN AM OSC OUT 24
4.6V
4.6V
C350 2 AM MIX OUT AM OSC IN
23
0.047
2V
3 REG
T351
2.4V
FM AFC
22
0.3V
AM IF
AM RF IN 21
0V
VSM 20
CF352
1
2V
AM LOW
2.3V
4 AM IF IN 19
2 CUT
2.1V
3
R352
0V
FM/AM
5 GND 18
1K
OUT
C353 4.7V
6
SD
0.022
C354 4.7V
7
STEREO
0.022
R353
270
C319
CF351 2.5V
8 FM DET
0.1
C399
0.022
2.1V
4.6V
9 VCC
MPX VCO 17
C398
100/16
2V
3.9V
10 IF OUT 16
MPX IN
3.4V
C355
11
PHASE
22P
1.2V
(CH) R-CH OUT
C358 15
1.2V
1/50
L-CH OUT 14
PHASE
3.4V 3.6V
12 MO/ST 13
(FM/AM)
R359 R355
1.8K 3.3K
IC303
LA1832S
FM IF DET./FM MPX./AM IF
R354
3.9K
5
AM
FM/AM
LOOP
ANTENNA
CNP303
3
2
1
BAND
2 BF301
PASS
FILTER
3
1 0.8V
1.6V
2
3 3.6V
1.6V
4
0V
5
6
3.6V
7 2.9V
D301
8 3.6V
DS1SS133
9 3.6V
D302
DS1SS133
FM BAND
COVERAGE fL C338
0.001
D303
DS1SS133
D304
DS1SS133
+B
C323
AM BAND
0.022
COVERAGE fL
T302
C339
AM ANT.
100P
(CH)
C330
15P(CH)
VD301
SVC348S
C332
C331
0.022
0.047
C342
0.022
FM
VR351
MUTE
10K(B)
LEVEL
L353
R358
1mH
8.2K
C343
C362
33P
3.3/50
(CH)
C361
0.022
C363
0.022
C364
4.7/50
C365
0.022
C366
0.001
R350
C367
2.7K
1/50
X351
TP302
456kHz
R357
R356
1K
470K
C368
C374
1/50
0.015
C373
0.015
C371
1/50
R361
18K
R363
1.2K
R364
1.2K
2
1
SWITCHING
3
Q351
KRC104M
R370
1K
6