Read Sharp SD-CX1 (serv.man7) Service Manual online
– 45 –
SD-CX1H
Figure 45 SCHEMATIC DIAGRAM (4/14)
7
8
9
10
11
12
10
DI
DQ
CLK
CE
D_GND
SM
A+12V
TUN/L
A_GND
TUN/R
TP302
MUTE
IO2
AM LOW
CUT
FM/AM
OUT
MPX VCO
MPX IN
R-CH OUT
L-CH OUT
PHASE
(FM/AM)
PHASE
IF OUT
VCC
FM DET
STEREO
SD
GND
AM IF IN
IF IN
AM IN
FM IN
FM
MW
MO/ST
ST IND
MO/ST
NC
1 2 3 4 5 6 7 8 9
4 5 6
7
8
9
11
12
13
14
15
16
17
18
19
10
7 8 9
10 11
16 15 14 13 12
3
2
1
11.8V(0V)
11.2V(1.9V)
11.9V
2.6V(0V)
0V
(2.5V)
5.2V
0V
0V(11
.6V)
3.9V(0V)
0V
0V
5.2V
0V(1.9V)
2.6V(0.9V)
0V
2.1V
1.3V
1.3V
2.3V
2.1V
0V
5.2V
5.2V
5.1V
0V
3.9V
(1.9V)
3.9V
(1.3V)
3V
+B
+B
+B
+B
+B
24
23
22
12
11
10
9
8
7
6
5
4
3
2
1
AMP.
CE
CLK
DI
DO
VREF
FLOUT
VSSA
MPXIN
CIN
T1
T2
T3
T5
XOUT
VSSD
T7
SYNC
DI
RDS-ID
DO
CL
SYR
ICT21
T6
CE
VDDD
XIN
VDDA
T4
21
20
19
18
17
16
15
14
13
+B
+B
+B
+B
SWITCHING
AM IF
IC303
LA1832
CNPU03
P42 3-H
TO MAIN PWB
5.17V
1.96V
2.54V
2.58V
2.58V
5.17V
0V
2.59V
2.56V
0V
0.7V
0V
0V
0V
2.70V
0V
0.34V
0V
0.8V
3.94V
0V
0V
0V
0V
5.17V
2.72V
1 2 3 4 5 6 7 8 9
10
NC
NC
NC
NC
NC
NC
NC
NC
CF352
C372
1/50
C371
1/50
C373 0.018
R357 470K
C374 0.018
R352
1K
C358
1/50
CF351
FM IF
R356
1K
C368 1/50
C366
0.001
R353
270
C354
0.022
C353
0.022
C399
0.022
C398
100/10
C356
0.001
C357
2.2/50
C364
10/16
C363
0.022
C365
0.022
C367
1/50
R350
2.7K
X351
456kHz
C376
0.022
R370
1K
R362
220
R361
220
R364
15K
R363
15K
R354
3.9K
L352
100
µ
H
C396
100/10
C370
1/50
C355
22P
(CH)
R355
3.3K
IC303
LA1832
FM IF DET./
FM MPX./AM IF
R391 270
R389
3.9K
R392 270
ZD351
DZ5.1BSB
C395
0.022
IC302
PLL
CONTROLLER
LC72131
R377 47K
L351
100
µ
H
R393
1K
C
387
0.047
C385 0.01
R376
1K
C386
330P
R378 82K
R360
4.7K
R395
47K
R399
10K
R383
5.6K
GR
Q360
2SB562 C
4
C391
47/25
R385
5.6K
D352
DS1SS133
BI302
R359
1.8K
C377
0.022
CT37
0.022
RT34
56K
RT33 56K
CT36 0.022
RT32 10K
CT23
10/16
LT21
2.2
µ
H
CT21 47/10
CT22 0.022
CT25
560P
CT24 0.022
RT39
220K
DT31
DS1SS133
XT21
4.332MHz
CT26
22P
(CH)
LT22
2.2
µ
H
CT27
22P
(CH)
ICT21
LC72722
RDS DECORDER
QT21
KTC3199 GR
RT30
1K
RT29
1K
1K
RT28
1K
RT26
1K
RT35
220K
RT36
220K
RT37
220K
CT29 0.022
CT28 47/10
L354
LOW PASS
FILTER
CNS302
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