Sharp CD-XP120W Service Manual page 22

CD-XP120W
MAIN PWB-A1(3/3)
A
B
C
D
+B
C384
+B
0.001
C382
15P
(CH)
E
IC302
LC72131
PLL(TUNER)
R374
1K
R373
1K
R372
1K
R371
1K
(11.4V)
F
+B
D308
G 1N4148
+B
+B
+B
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.
1
SO301
2 1
FM ANTENNA
TERMINAL
2 1
CNP301
C349
0.001
D307
1N4148
D305
1N4148
C304
0.01
C320
0.001
C305
0.0047
C307 C306
0.0047 9P(UJ)
C308
FM RF
0.022
L302
C309
0.001
R301
22
R303
33K
OSC BUFF
R315
Q302
33
SSC1674 C
C315
100P
C316
10/16
C317
VD302
0.022 +B
KDV147B
R313
680
R314
33
Q306
SSC1674 C
R309
470
+B
+B
C381
12P
X352 R382
(CH) 330
4.5 MHz
C397
0.022
2.6V
2.6V
X OUT
1 X IN 22
VT
R381
21
VSS
2 0V
10K
20
AOUT
C394
C393
0.1V 47/16
1/50
3
0.1V
R380
4 C392
DI
1.5K
0.9V 0.001
4.8V
5 CL 19
AIN
5.1V
0.9V
C380
6 DO
10/16
18
PD
R379
1.7V
2.2K
7
FM C387
+B
0.022
5.2V
17
VDD
3.7V 2.6V (0V)
8 MUTE 16
FM IN
(0V)
0V
3.9V AM IN 15
9
FM
(2.6V)
C385
3.5V
10 0.01
14
(0V) MO/ST
R393
1K
13
IF IN
11 R395
12
IF REQ
47K
C386
0V
330P
R365
10K
R387 C383
5.6K 0.022
C396
+B
100/10
+B
R385
5.6K
10.9V
C391
Q360
47/16
KSA1015 GR
SWITCHING
2
Figure 22 SCHEMATIC DIAGRAM (5/10)
AM LOOP
ANTENNA
BF301
B.P.F
1
2
3
C319
D306
18P(CH)
1N4148
1
0.8V
2
1.5V
3
5.2V
R302 C318
100K 5P
4
1.5V
D302
VD303
1N4148
KDV147B
5 0V
FM IF
6
5.2V
R307
47
FM OSC.
7 4.4V
L303
8
3.8V
C313
6P
2
(UJ)
1
C334
27P(UJ)
3
+B
9 5.2V
R312
R316
2.2K
330
R336
+B
C351
0.022
CF302
1
3
2
C344
2.1V
33P
AM OSC
1
FM IF
OUT
IN
C352
5V
10/16 AM MIX
2
OUT AM OSC
C378
330P
REG
3
C350 FM AFC
0.022
AM RF
VSM
1
R352
2
1K
AM IF
4
CF352 IN
3
AM LOW
0V
5 GND CUT
C353
FM/AM
0.022
6
SD OUT
5V
C354
5V
0.022
STEREO
7
CF351
FM DET
8
R353
2.9V
270
C399
MPX VCO
(4.3V)
+B
0.022
VCC
9
C398
5V
100/10
0V MPX IN
C355
10
IF OUT
22P 3.8V
C356
(1.9V)
R-CH
0.001 11 PHASE
OUT
C370
L-CH
1/50
OUT
PHASE MO/ST
R376
12 (AM/FM)
10K
R355
3.8V
3.3K
+B
(1.2V)
IC303
LA1832S
FM IF DET./
R366
FM MPX./AM IF
2.2K
ZD351
DZ5.1BSB
3 4
– 22 –
FM SIGNAL
AM SIGNAL
C302
0.001
C330
12P(CH)
C331
0.047
C332
0.022
VD301
SVC348S
5.6K
+B
R351
5.6K
L353
1mH
C343
2.5V
33P
24
C362
5V
3.3/50
23
C360
IN
0.022
C361
2.1V 0.022
22
(2.7V)
2.1V (2.7V)
21
IN
C363
0.6V
0.022
20 C364
10/16
C365
(0.9V)
0V 0.022
19
18
C366
0.001
R350
C367
2.7K
1/50
X351
2.3V 456 kHz
17
(0V)
C368
R356 R357
2.1V 1/50
1K
470K
16
C369
56P
1.3V
C374
15
0.022
1.3V
14
C373
C372
0.022
1/50
13
R364
3.3K
4V
(2.2V)
2
R363
3.3K
1
3
Q351
KRC104 M
TUN_R
TUN_L
FM ST
SD
A_GND
DO
CL
DI
CE
+B
A_12V
D_GND
5
10
9
2
1
11
P18 1 - C
TO
3
MAIN PWB
4
6
5
7
8
6