XL-3000 (serv.man6). Schematic Diagrams - Sharp Audio Service Manual (repair manual). Page 5

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XL-3000H
– 32 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
0.6V
2.3V
0V (0.9V)
5V
2.5V
2.1V (2.7V)
2.1V (2.7V)
(4
3V)
2.9V
0V
5V
5V
5V
2.1V
2.1V
2.1V
9.6V
0.06V
0.04V
9.5V
2.3V
2.53V
0V
3.9V
(0V)
0V
0V
3.7V
(11.4V) 
1.7V
5.1V
4.8V
0.1V
0.1V
2.6V
0V
2.6V
0.9V
0.9V
5.2V
2.6V
(2
6V)
0V
(0V)
+B
+B
+B
+B
0.84V
0.15V
9.5V
FM  FRONT  END
FM IF DET/
FM MPX/AM IF
PLL(TUNER)
AM IF
1
2
3
1
2
3
1
2
3
BALUN
VSM 
AM  RF 
OUT 
OUT 
IN
IN
CUT 
AM  LOW
FM/AM 
FM  AFC
AM  OSC
AM  OSC
FM  DET
STEREO
SD
GND 
AM  IF 
REG 
AM  MIX OUT 
IN
IN
FM  IF 
LOW PASS
FILTER
8
7
6
5
4
3
2
1
9
8
7
6
5
4
3
2
1
PD
AM IN
FM IN
VDD
AIN
AOUT
VSS 
X OUT
22 21 20
19
18
17 16 15
AM SIGNAL
FM SIGNAL
FM
FM
MUTE
CE
DI
CL
DO
X IN
23
22
21
20
19
18
24
8
7
6
5
4
3
2
1
AM
GND
FM
75ohms
TP301
CHASSIS
GND
FM Mute
Level
AM Band
Coverage
AM 
Tracking
ANTENNA
TERMINAL
4.5MHz
L354
C367
1/50
R350
2.7K
SO301 
C360
0.022
C362
3.3/50
C349
0.001
C380
10/16
D304
1N4148
D303
1N4148
L342
2.2
µ
H
C351
0.022 
R351
5.6K
VR351
10K(B)
L353
1mH
FE301 
C346
0.022
C345
0.022
R369A
68 
R369B
82 
C348
100/16
R343
180
C341
0.022
C347
0.022 
R346
330
CF301 
R344
680
R348
680
R347
6.8K
R349
33
Q301
2SC380 O
R323
68K 
C334
27P(UJ)
C335
560P
C337
0.022
T306
C329
0.022 
C331
0.047
C332
0.022
L341
X351
C366
0.001
IC302 
LC72131
IC303
LA1832S  
C302
0.001
CF302 
D301
1N4148
D302
1N4148
C330
12P(CH)
T302
T351
CF352 
C350
0.022
C352
10/16
R352
1K
C353
0.022 
C354
0.022
CF351 
C363
0.022
C364
10/16 
C365
0.022 
R358
8.2K
C343
33P
C361
0.022
R382
330
C394
47/16
C397
0.022
R386
330
R381
10K
C393
1/50
R380
1.5K
R379
2.2K
C392
0.001
C387
0.022
X352
C381
12P(CH)
C382
15P(CH)
R374
1K
R373
1K
R372
1K
R371
1K
C384
0.001
R345
4.7K
R336
5.6K
C301
0.012
VD301
SVC348S 
• NOTES ON SCHEMATIC DIAGRAM can be found on page 23.
Figure 32 SCHEMATIC DIAGRAM (5/8)

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