Sharp CD-PC1881V Service Manual page 21

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