Sharp CD-PC1881V Service Manual page 21

TUNER PWB-G
R363
47K
R362
R364
47K 1.2K
MO/ST
13
L-CH OUT
14
R-CH OUT
15
C374
0.033
C368
R357
1/50
470K
16 MPX IN
R356
1K
17 MPX VCO
X351
456KHz
C367
1/50
R350
2.7K
FM/AM OUT
18
C366 0.001
AM LOW CUT
19
C365 0.022
VSM
20
C364 10/16
C363 0.022
AM RF IN
21
C361 0.022
FM AFC
22
C362
AM MIX OUT
3.3/50
C343
33P 23 AM OSC IN
AM OSC OUT
24
R358
8.2K
VR351
10K(B)
IC303
FM MUTE
LEVEL
LA1832
FM IF DET./
FM MPX./AM IF
VD301
SVC348S
T302
AM BAND
COVERAGE fL
+B
SO301
ANTENNA
TERMINAL
7
FM SIGNAL
AM SIGNAL
D353
DS1SS133
+B
R354
3.9K
C370
1/50
PHASE
12
(FM/AM)
C355
22P
11
PHASE
IF OUT 10
C398
C356
100/10
0.001
VCC 9
C399
0.022
R353
270
FM DET 8
CF351
C354
R393
STEREO
7
0.022 1K
C353
SD
6
0.022
GND 5
CF352
AM IF
3
2
4
R352
1K 1
T351
3
REG
2
C350 0.022
1
FM IF IN
R351
C352 10/16
5.6K
C351 0.022
+B
CF302
3
2
1
FM IF
10.7MHz
R336
1K
R323
68K
C334
27P(UJ)
C335
560P
T306
AM OSC.
C337
0.022
AM
FM
75 ohms
8 9
Figure 21 SCHEMATIC DIAGRAM (4/12)
R385
5.6K
L352
R384
100µH
5.6K
VOLTAGE
REGULATOR
R359
1.8K
R398
1.2K
R360
R395
4.7K
47K
CF351
FM DET.
10.7MHz
R378
R377
82K
47K
ST IND 11
12 IF IN
MO/ST
13 SD 10
L351
14
100µH TUN_MUTE
15
AM IN
C387
FM IN
16
0.022
17 VDD B01
18 PD DO
R379
19
AIN
2.2K
CL
DI
CE
20 AOUT
R381
21
VSS
10K
22 X OUT
X IN
R382
150
X352
4.5MHz
C381
12P(CH)
+B
R375
R344 470
C341
0.022
C347 0.022
R345 4.7K
L342
2.2mH
C345 0.022
C321 100/16
R369
C346 0.022
1.2K
C301
0.001
10
– 21 –
DO
CLK
+B A+12V
A GND
+B
+B
3
1
2
R371
1K
9
8
7
6
5
R372 1K
4
R373 1K
3
R374 1K
2
1
C382
15P
C384
(CH)
0.001
+B
68
1 IF OUT
2 GND
F OUT
3
VT
4
5 VCC
6 GND
7 GND
8 ANT
11
CD-PC1881V
CNP303
D GND
1
2
3
CE
4
DI
5
CNS303
6
P18 12 - A
7
TO MAIN PWB
L
8
R
9
12