DOWNLOAD Sharp CD-E250 (serv.man20) Service Manual ↓ Size: 3.52 MB | Pages: 68 in PDF or view online for FREE

Model
CD-E250 (serv.man20)
Pages
68
Size
3.52 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System
File
cd-e250-sm20.pdf
Date
PREV: Sharp CD-E250 (serv.man19) Service Manual

Sharp CD-E250 (serv.man20) Service Manual ▷ View online

– 21 –
CD-E250E
CD-E550E
 Figure 21 BLOCK DIAGRAM (4/4)
TO  MAIN  SECTION 
TO  POWER  SECTION 
Q702,Q703,Q704
RESET
Q701
LED701
G9
VDD3
VDD2
VDD1
VDD4
G1
1
1
2
CNS405
CNS901
CD  RES
CE
ROTATE
UP_SW
DOWN_SW
OPEN_SW
DISC NO._SW
DISC 1_SW
CLOSE_SW
DRF
VWRQ
11
8
10
9
6
7
4
5
2
3
1
1
2
3
4
5
11
3
~
15
12
~
50
51
47
~
38
30
29
IRQ
28
POWER_KEY
27
19
X-BASS/DEMO
KEY2_IN
~
~
P1
P4
GND
89
GND
GND
~
P5
P20
~
31
16
32
33
~
67
68
69
70
71
73
4
5
6
7
74
75
CNS803
8
10
9
6
7
4
5
2
3
1
CNS102
2
1
4
3
6
5
7
CNS202
6
7
4
5
2
3
1
80
82
23
84
79
76
77
78
21 92 93 94 91 88 85
95 96
11 26
97 98 99 100
83
81
52
~
VF1
VF1
VF2
VF2
3.8V
3.8V
–30V
+B3
–B2
+B3
5.6V
+B3
+B3
D_GND
IC701
CD-E550E:IX0065SJ
CD-E250E:IX0058SJ
SYSTEM
MICROCOMPUTER
VFD701
FL DISPLAY
RX701
REMOTE
SENSOR
KEY
SW703~SW710
SW719~SW721
18
16
15
14
17
90
46
72
KEY1_IN
CF2
CF1
KEY
SW711~SW715
SW722~SW724
SW702
POWER
ON/STAND-BY
SW701
X-BASS
/DEMO
X702
8 MHz
DISC_NO_SW
DISC1_SW
DISC_UP_SW
CLOSE_SW
ROTATE
DISC_DOWN_SW
OPEN_SW
CD_CE 
CD_RES
CD_DRF
CD_WRQ
T1_SOL
T1_RUN_PLUS 
T2_TAPE2_SW 
CH_SW 
MOTOR 
T1_RUN_PLUS 
T2_SOL
TAPE_BIAS 
REC_PLAY
REC 
FAN_PRT
FAN_START
SP_DETECT
SP_RELAY
SIGAL_LVL
P_MUTE
CD+B
CH_SW
T2_RUN_PLUS
T1_RUN_PLUS
T2_SOL
T1_SOL
MOTOR
REC_PLAY
TAPE_BIAS
TAPE_SW
REC  SW
FAN_PRT
P_MUTE
SP_RELAY
FAN_START
CD-E550E ONLY
SIGAL_LVL
SP_DETECT
CD+B
SD
FM_ST 
CE
CL
D0
D1
D_GND
SD
FM_ST
CE
CL
D0
D1
RESET  IN  PUT
SYS_STOP
13
12
XT2
XT1
X701
32.768 kHz
CD-E250E
CD-E550E
– 22 –
Figure 22 SCHEMATIC DIAGRAM (1/13)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
2.1V
+B
+B
+B
+B
0.001
0.01
0.0033
33
330 
1N4148
0.001
CHASSIS
GND
0.012 
TA7358AP
10/16 
33
10K 
47
33
33P 
KDV147B 
22P(CH) 
22
5P
1N4148
470
680 
4.7K
0.022 
680 
47K 
100P
10P(CH) 
SSC1674 C 
SSC1674 C 
5.6K
12P
(CH) 
1N4148
1N4148
0.001
0.022 
0.047 
0.022 
0.022 
560P
27P 
68K 
1
µ
10K(B)
5.6K
0.022 
0.001
0.022 
33K 
KDV147B 
100K
0.001
0.0047
0.0047
18P(CH) 
1N4148
1
2
3
3
2
1
3
2
1
SVC348S 
(UJ)
3.8V
4.4V
0V
5.2V
5.2V
5.2V
1.5V
1.5V
0.8V
FM FRONT END
FILTER
BAND  PASS 
9
3
FM IF
FM IF
FM
FM RF
1
2
8
7
6
5
4
3
2
1
9P(UJ)
6P(UJ)
AM
GND 
FM
2.2K
AM OSC.
AM  TRACKING
AM BAND
COVERAGE fL
FM OSC.
FM BAND
COVERAGE fL
FM MUTE
LEVEL
AM LOOP
ANTENNA
FM
ANTENNA
T302
C330
D302
D301
C302
C329
C337
C332
C331
T306
C335
C334
R323
VD301
R336
VR351
R351
L3
C
C351
R316
R307
R306
C312
L303
C313
VD302
C314
CF303
C320
R301
C318
T304
R303
VD303
R302
C303
IC301
C319
C304
D306
C306
L302
BF301
D307
D305
C349
C301
C309
C308
C307
C305
R315
R305
R304
C315
C311
Q302
C316
R310
Q306
R308
R312
CNP301
R314
R313
C317
R309
C321
FM SIGNAL 
AM SIGNAL 
– 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) 
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
CD-E250E
CD-E550E
– 24 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
Figure 24 SCHEMATIC DIAGRAM (3/13)
560P
560P
4.7K
P
100/25
100/25
330P
1K
150
1.5K
1.5K
56K 
10K
33K
330P
270
47K
56K 
3.3K
2.2K
KSC1815 GR 
KS
KSC1815 GR
KSC1815 GR 
1N4148
1N4148
18K
10K 
3.3/50
KRC107 M 
HSB562 C
HSB562 C
47K 47K 
KSC1815 GR
3.3K
2.2K
KSC1815 GR
82P
82P
KSA1015 GR
10K 
0.022
10K
10K 
KSC1815 GR 
4.7K
4.7K
10K
1K
KRC104 M
KRC104 M 
10K 
270 
47K 
3.3/50
KRC107 M 
10K
100/25
47
47
1K
1K
100/10
560P
560P
1
2
23
24
TAPE 1 
TAPE 2 
TAPE 2 
PLAYBACK  HEAD (219-7)
L(T2)
L(T1) 
T1_L
L-CH
R-CH
L-CH
R-CH
A_GND 
TI_R
3
2
1
3
2
1
1
1
3
3
3
2
2
2
1
3
2
+B
ERASE  HERD (219-6)
RECORD/PLAYBACK HEAD (219-7)
1
2
4
3
5
6
7
1
2
4
3
5
6
7
+
–
SOLENOID
TAPE
MOTOR 
INITIALIZE
REC 
PHOTO
INTERRUPTER
2
1
M
7
6
5
2
3
5
6
7
1
4
2
3
5
6
7
1
4
4
3
2
1
7
6
5
4
3
2
1
7
6
5
4
3
R
(T2
)
R(T1)
TAPE MECHANISM PWB-H1,2 (219-11)
TAPE MECHANISM ASS'Y(219)
MAIN PWB-A(2/3)
TAPE 1
SOLENOID
INITIALIZE
PHOTO
INTERRUPTER
2
3
5
6
7
1
4
TAPE MECHANISM PWB-H1,2 (219-11)
CNP801
CNW801
R805
R809
Q801
R806
R810
Q803
C801
C802
CNP802
CNW802
CNW805
CNS805
CNW804
CNS804
M801 (219-10)
SW801 (219-8)
CN1
SW803 (219-9)
SOL801 (219-5)
R803
R807
C806
Q806
R825
D802
R865
Q805
R821
Q809
R823
C807
R802
R804
R864
D801
R822
R820
R826
C808
Q811
R817
C849
C805
R815
R816
Q810
Q802
Q808
Q807
R812
R819
R818
Q813
Q814
C810
C809
R833
R
R828
R832
R829
R830
C817
R836
C814
C818
R837
R846
R827
Q804
R813
C803
C804
C815
R831
R811
SW802 (219-8)
SOL802 (219-5)
PLAYBACK SIGNAL
RECORD SIGNAL
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