Sharp HT-X1, Service Manual

Page: 34 / 92

HT-X1
6 – 9
Figure 6-9 SCHEMATIC DIAGRAM (9/10)
NC
NC NC
PD
VT
FM FM MUTE
VSM
AM
RF
PHASE PHASE IF
OUT
STEREO SD
GND
AM
IF
REG AM
MIX
FM
DET
OUT
OUT
VCC
OUT OUT
IN
IN
IN
CUT
AM
LOW
FM/AM
IN
MPX
VCO
MPX
IN
OUT
MO/ST
L-CH
FM
AFC
AM
OSC
AM
OSC
CE DI CL
FM
IF
DO MO/ST
R-CH
IF
REQ
I
FI
N
VDD AIN
AOUT
VSS
XO
U
T
XI
N
FM
IN
AM
IN
AM
ANTENNA
TERMINAL
FM
ANTENNA
TERMINAL
D303 1N4148
D304
1N4148
Q301
2SC380
O
C381
12P(CH)
R323
68K
C334
27P(UJ)
C352
10/16
CF302
C398
100/10
C341
0.022
C347
0.022
C382
15P(CH)
C335
560P
R313
680
R346
330
R344
680
R395
47K
C380
10/16
C3
1/
R377
5.6K
C357
2.2/50
R382
330
R376
R336 5.6K
R345
4.7K
C362
3.3/50
IC301
NSA003SJ
FM FRONT END
IC301
R374
1K
R386
330
C397
0.022
C371
1/50
C354 0.022
CF352
R373
1K
C350
0.022
T302
C330
12P(CH)
R359
1.8K
R353
270
R371
1K
R360
4.7K
T351
AM IF
C393
1/50
C384 0.001
R351
5.6K
C363
0.022
C351
0.022
R357 470K
C369 56P
C374
0.018
SO302
C385
0.01
C399
0.022
C360
0.022
R381 10K
C331
0.047
C368 1/50
IC302
IC302
TUNER
(PLL)
LC72131
R379 2.2K
C392
0.001
VD301
SVC348S
C387
0.022
C366
0.001
C353
0.022
C329
0.022
T306
X351
456
KHz
VR351
R380
1.5K
L301
C358
1/50
R393
1K
C301 0.012
D301 1N4148
D302 1N4148
L353
1mH
C364
10/16
C365
0.022
R358
8.2K
R369B
82
C345
0.022
C343
33P
R369A
68
C373 0.018
R356
0
R343
180
C348
100/16
IC303
IC303
FM IF DET. /FM MPX./AM IF
LA1832S
C361
0.022
CF351
L342
2.2uH
C355
22P
R387
5.6K
C383
0.022
C344
33P
C378
330P
C376
0.01
C388
0.047
R352
1K
C302
0.001
C367 1/50
L354
CF303
R350
0
R365 10K
R349
33
C370
1/50
R347
6.8K
R372
1K
C346 0.022
C337
0.022
L351
100uH
X352
4.5
M
Hz
C386
330P
SO301
C394 47/16
C356
0.001
C349
0.001
C332 0.022
+B
+B
+B
+B
+B
+B
+B
TUNER PWB-B5
FM SIGNAL
AM SIGNAL
• NOTES ON SCHEMATIC DIAGRAM can be found on page 5-1.
A
B
C
D
E
F
G
H
1
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