Read Sharp CD-E250 (serv.man14) Service Manual online
– 23 –
CD-E250E
CD-E550E
Figure 23 SCHEMATIC DIAGRAM (2/13)
7
8
9
10
11
12
3.9V
(0V)
(0V)
3.5V
3.7V
(11.4V)
1.7V
5.1V
4.8V
0.1V
0.1V
2.6V
0V
0.9V
0.9V
5.2V
2.6V(0V)
(2.6V)
2.6V
0V
0V
9.3V
9.3V
10V
(1.9V)
3.8V
(4.3V)
2.9V
0V
5V
5V
5V
0V
5V
2.1V
2.1V
2.1V
(2.7V)
(2.7V)
0.6V
(0.9V)
0V
5V
2.5V
2.1V
2.1V
2.3V
2.1V
2.3V
(0V)
1.3V
1.3V
4V
(2.2V)
(1.2V)
3.8V
(0V)
4.7V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
330P
33P
0.001
2.7K
1/50
1N4148
0.022
3.3/50
470
5.6K
KSA1015 GR
5.6K
10K
5.6K
6.8K
4.7K
1.8K
1K
1K
1K
1K
15P(CH)
12P
(CH)
(CH)
10K
330P
3.3K
3.3K
KRC104 M
390
390
DZH05C2+
100/10
0.022
100
µ
H
5.6K
0.022
22P
1/50
100
µ
H
47K
1K
0.001
0.022
1/50
2.2/50
3.3K
5.6K
0.01
0.022
0.001
2.2K
1.5K
1/50
10K
330
0.022
47/16
330
0.022
33P
8.2K
0.022
10/16
0.022
0.022
0.022
1K
10/16
0.022
270
LA1832S
LC72131
0.001
0.022
0.022
56P
12K
470K
1K
1/50
12K
47/16
1
µ
H
10K(B)
5.6K
0.022
10/16
100/10
1/50
1/50
2.2K
MAIN PWB-A (1/3)
PD
VT
TP301
FM
FM
MUTE
VSM
AM RF
(AM/FM)
PHASE
PHASE
IF OUT
VCC
FM DET
STEREO
SD
GND
AM IF IN
REG
AM MIX OUT
OUT
OUT
OUT
OUT
IN
IN
CUT
AM LOW
FM/AM
MPX VCO
MPX IN
MO/ST
L-CH
R-CH
FM IF IN
FM AFC
AM OSC
AM OSC
CE
DI
CL
DO
MO/ST
IF REQ
I
F
IN
AM IN
FM IN
VDD
AIN
AOUT
VSS
X OUT
X IN
SD
FM ST
DO
CL
CE
DI
A_12V
D_GND
TUN_L
TUN_R
A_GND
3
FM IF
FM IF
AM IF
1
2
3
1
2
11
10
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
2
1
3
12
11
10
9
8
7
6
5
4
3
2
1
22 21 20
19
18
17 16 15
14 13 12
11
10
9
8
7
6
5
4
3
2
1
FM MUTE
LEVEL
TO MAIN PWB (3/3)
MAIN SECTION
P26 1 - C
P28 1 - C
TP302
FM IF DET./
FM MPX./AM IF
456 kHz
PLL(TUNER)
4.5 MHz
R336
VR351
R351
C362
C343
R358
L353
R352
C352
C350
CF352
CF302
IC303
C360
C361
C365
C364
C363
C366
C367
X351
R364
C373
C374
C369
R362
R357
R356
C368
R361
C371
C372
R363
Q351
R366
R376
C355
C370
C356
C399
C358
C357
R355
C398
CF351
C354
R353
C353
C378
T351
C344
C351
R309
C384
C382
C381
X352
R380
C393
R381
IC302
R371
R372
R373
R374
R360
R359
C385
R379
C392
C387
C394
C380
L351
C397
R386
R382
C386
R385
R384
Q360
R383
C391
D308
R365
R387
C383
R395
R393
R377
R392
R391
ZD351
C396
C395
L352
R350
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