Sharp MD-C2 - Page 53

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MD-C2
Figure 53 SCHEMATIC DIAGRAM (12/16)
7
8 9 10 11 12
C357 3.3/50
C360 0.022
C359 0.022
C361
22/16
R347
3.9K
C353 0.018
C355
3.3/50
C356
3.3/50
R349
1.5K
IC303
LA1805
AM/FM IF/FM DET. /MPX.
C351
0.0022
R340
47K
X352
4.5MHZ
IC302
LC72131
PLL
CONTROLLER
C381
12P
(CH)
C382
15P(CH)
1
22
21
2
R374
1K
R373
1K
R372
1K
R371
1K
4
5
6
3
7
123 4 5678 9
10 11 12
FM DET
AM IF
AM IF
H
z
131415161718192021222324
R375
1.2K
VR351 6.8K (B)
TP303
C358 0.0015
R352
15K
VCO
8
9
10
11
R379
2.2K
C383
0.022
12
13
14
15
16
17
18
19
20
C338
100P
T352
R348
33K
C392 0.001
R361
10K
Q343
KRA109 M
C365 1/50
R357 3.3K
C366 1/50
R358 3.3K
R364 47K
C370
1/50
C354
470P
Q342
HSC1815 GR
TP302
R351
10K
L343
100µH
ZD351
DZJ5.1B
C369
47/16
R362 470
C350
220/10
C349
0.022
C384
0.001
R350
47K
R376
1K
R356 10K
C367 1/50
R359
2.7K
R360 2.7K
C364 0.027
T351
CF352
C363
0.027
R382
5.6K
R384
5.6K
R383
5.6K
C385
47/16
C348
0.022
C386
100/16
C340
0.001
TU R CH
TU D GND
CL
DO
CE
DI
TU L CH
TU MUTE
TU A GND
+12V
FM IF
IN
AM MIX
AM OSC AM+B AM RF FM+B FM DET
DET OUT
AM IF
ST IND
GND
TUN IND
MPX –IN FM– M/ST VCO
X OUT
VSS
AM IN
FM IN
VDD
PD
A IN
A OUT
NC
DO
CL
DI
CE
BO2
BO3
X IN
NC
AM/FM
L CH
R CH
FM
STEREO
IF IN
MO/ST
NC
NC
TUNER PWB-D
1
CNP303
2
4
5
6
3
7
8
9
10
1
23
+B
R385
220
R365
150 (1/2)
D342
1SS133
D341
1SS133
R369
4.7K
R363
3.3K
Q344
HSA11015 GR
3
0
R380
1.5K
+B
+B
+B
+B
CNPF01
TO MAIN PWB(1/3)
P36 1-B
0V
0V
0V
5.5V
(6.9V)
4.8V
(6.8V)
7.2V
(1.2V)
11.4V
0.2V
(11.2V)
11.4V
(0V)
2.7V
0V
0V
0V(4.8V)
0V
4.9V
0V
0V
1V(0V)
5.6V
0V
0.3V
0V
0V(2.7V)
2.6V(0V)
5.3V
0V
0V(1V)
11.4V(10.8V)
0V
2.7V
(1V)
0.2V
(11.2V)
1.7V 1.7V
5.5V(6.9V)
0.2V(0.8V)
1.7V
0V 5.6V 0V
2.4V 2.4V
1V
(1.1V)
4.8V(6.8V)
1.9V (1.7V) 1.7V 1.6V 0.4V (0.7V) 5.5V (6.9V)
5.5V(6.9V)
1.7V
1.7V 1.7V
1.8V
1V
1.12V
(0V)