DOWNLOAD Sharp CD-MD3000 (serv.man11) Service Manual ↓ Size: 1.52 MB | Pages: 16 in PDF or view online for FREE

Model
CD-MD3000 (serv.man11)
Pages
16
Size
1.52 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Schematic diagram
File
cd-md3000-sm11.pdf
Date
PREV: Sharp CD-MD3000 (serv.man10) Service Manual

Sharp CD-MD3000 (serv.man11) Service Manual ▷ View online

CD-MD3000H/CD-MD3000W
– 62 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 46.
Figure 62 SCHEMATIC DIAGRAM (9/16)
FROM
MAIN PWB
POWER PWB-D1 (2/2)
TO POWER SECTION
1 2 3 4 5 6 7
IC101
TAPE MECHANISM
ASSEMBLY(1/2)
RECORD  SIGNAL 
PLAYBACK  SIGNAL 
CNS940
P57   9-H
CD-MD3000H: P64  1-G
CD-MD3000W: P66  1-G
1 2 3 4 5 6
1 2 3 4 5 6 7
1 2 3 4 5 6
R156
33K
R155
33K
Q119
DTC363 TS
Q120
DTC363 TS
R102
2.2K
R101
1K
R103
2.2K
C103
10/16
R105
100
IC102
BA3126N 
HAED
SELECTOR
Q101
KRA107 M
R104
5.6K
Q102 KTC3199 GR
R154
47K
C141
1/50
C140
1/50
C105
560P
C101
180P
CNP102
C104
560P
R143
82
R114
1K
R137
10K 
C109
330P
R141
47K
C138
0.0033
C130
1/50
C135
0.047(ML)
C137
0.0082
(PP)
C111
47/25
R117
56
C119
1/50
C113
560P
C107
0.033
R125
5.6K
R119
100K
R121
3.9K
C110
47/25
C112
560P
C120
1/50
R124
5.6K
C106
0.033
R109
15K
R132
1.5K
C126
22/50
R134
100 
C116
3.3/50
R131
6.8K
Q116
KTC3203 Y
C127
0.0033
C132
220/16
C131
22/50
R135
100
R128
68K
C118
0.022
R138
10K
C123
0.022
R150
6.8K
R116
56
C102
180P
C129
1/50
C121
270P
R148
4.7
R136
10K
C108
330P
R133
1.5K
L104
330
µ
H
R149
15K
Q114
2SA1015 GR
R153
47K
R147
4.7K
Q115
KRC104 M
R130
1K
R126
15K
R127
15K
R129
1K
R118
100K
R120
3.9K
C125
22/50
C122
270P
C124
0.022
R144
220
R139
22K
R115
1K
C134
47/25
C133
0.039(ML)
CNP101
IC101
AN7345K
PLAYBACK AND 
RECORD/PLAYBACK
AMP.
11.3V 
0V
0V
0V
0V
0V
0V
11.3V 
11.3V 
1
2
3
2
3
1
3
1
2
3
1
2
SWITCHING 
SWITCHING 
BIAS OSC. 
REC MUTE 
REC MUTE 
SWITCHING 
SWITCHING 
0V
0V
0V
0V
3.7V
3.7V
6.8V
4V
0V
0V
0V
3.3V
3.3V
0.5V
0.5V
0V
0V
1.9V
0.5V
0V
0V
0V
0V
0.5V
1.9V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
9V
0V
10V
10V
ERASE
HEAD
RECORD/ 
PLAYBACK
HEAD
R-CH L-CH
9 
8 
7 
6 
5 
4 
3 
2 
1 
1 2 3 4 5 6 7 8
REC_MUTE
REC_CONT
REC_L-CH 
REC_R-CH 
A_GND 
TAPE_R-CH
TAPE_L-CH
REC_BIAS
A_+10V
M_+11V
BIAS_GND
A_GND 
A_GND 
M_GND 
ERASE 
T2_R2 
T2_R1 
T2_L1 
T2_L2 
0V
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8 
7 
6 
5 
4 
3 
2 
1 
L-CH
L-CH
R-CH
R-CH
Vcc
ALC 
GND 
ALC 
RIPPLE
Nor/CrO2
–
+ 
–
+ 
Hich=T1 
+ 
+ 
–
–
Hich=CHROME 
56K 
112K
56K 
112K
A B C D
+B
+B
+B
+B
+B
+B
+B
– 63 –
CD-MD3000H/CD-MD3000W
Figure 63 SCHEMATIC DIAGRAM (10/16)
7
8
9
10
11
12
VSM
C2B_DO
C2B_CE
C2B_DI
C2B_CL
D_GND
S-MUTE
CD-R_SEL
PB_MUTE
S-MUTE
PB_MUTE
TO MICROCOMPUTER SECTION
P56  5-H
X
W
U
V
R
S
T
Q
O
C599 0.001
R582
22K
C566
22/50
Q508
DTC363 TS
Q507
DTC363 TS
C550
22/50
R542
1.5K
R552
47K
R538
1K
C534
47P
(CH)
C532
100P(CH)
C537
0.1
C536
10/50
R537
1K
C533
47P
(CH)
R551
47K
C551
22/50
R541
1.5K
C531
100P(CH)
C535
0.1
C530
10/50
JK501
C523
1/50
R550 39K
C525
1/50
C527
1/50
C517
1/50
C515
0.0027(ML)
C519
1/50
C521 1/50
R531 3.9K
R533 3.9K
C522
1/50
C524
1/50
C526
1/50
C528
1/50
C518 1/50
C520
1/50
C516
0.0027(ML)
C512
0.1
C514
0.1
R530
3.9K
R534
3.9K
R532
3.9K
R528
2.2K
C510
10/50
C529
10/50
R526
1K
D508
DS1SS133
D507
DS1SS133
C562 0.1 
L501
2.2
µ
H
L502
2.2
µ
H
C541
390P
C540
390P
R549
39K
C573
2.2/50
C574
2.2/50
R548
2.2K
R547
2.2K
R592
47K
R591
47K
R543
47K
R544
47K
Q509
KRA107 M
R539
10K
R540
10K
C503
22/50
R507
22K
Q502
KTC3199 GR
C502
0.001
R504
2.2K
Q501
KTC3199 GR
C501
0.001
R503
2.2K
R502
330
R525
1K
R524
1K
R501
330
R535
47K
R536
47K
C564
0.1
C563
10/50
C511
0.1
R529
3.9K
C513
0.1
R527
2.2K
C509
10/50
IC502
LC75341
AUDIO PROCESSOR
IC503
NJM4558M
OPE AMP.
C597
0.0027
C598
0.0027
R523
330
R522
330
DZ502
MTZJ8.2B
C507
47/25
C508
0.1
C506
47/25
C565
0.1
R515
4.7K
R516
47K
Q504
KRC107 M
Q503
KRA107 M
R517
1K
R512
8.2K
R511
8.2K
R513
1.2K
R514
1.2K
IC501
BU4066BCF
INPUT 
SELECTOR
IC502
LC75341
0V
0V
10V
10V
0V
0V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
0V
2.6V
2.6V
0V
0V
0V
0V
0.7V
0.7V
0V
0V
0V
0V
10V
0V
0V
0V
0V
0V
0V
3.6V
3.6V
8.2V
(6V)
(0V)
(6V)
(0V)
(-6V)
(0V)
(-6V)
(0V)
(7.6V)
(-6V)
(0V)
(0V)
(0V)
(0V)
(-6V)
(7.6V)
(0V)
(7.6V)
(-6V)
(6V)
R-CH 
L-CH
CHASSIS
GND 
–
–
+
+
–
–
+
–
+
–
+
+
–
+
–
+
CD/MD_R 
TUNER_R 
TAPE_R
AUX_R 
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
ROUT
LBASS
LSEL0
CCB
INTERFACE
R1
R2
R3
R4
RSEL0
RIN
RTRE
RBASS
VREF
VDD
CLK
L1
L2
L3
L4
LIN
LTRE
LOUT
VSS
CE
DI
AUX
DECK
TUNER
CD
2
3
1
A_GND
A_+B
A_GND2
A_-B
R_CH
L_CH
TO MICROCOMPUTER SECTION
P56  6-H
TO TUNER SECTION
CD-MD3000H: P54  1-F
CD-MD3000W: P55  7-F
A_GND
TUN_L
TUN_R
A_+B
D_GND
VSM
C2B_DO
C2B_CL
C2B_DI
C2B_CE
CD/MD 
TUNER_L 
TAPE_L
AUX_L 
A_GND
REC_RCH
REC_LCH
TAPE_L
TAPE_R
TO MICROCOMPUTER SECTION
P57  10-H
TO MICROCOMPUTER SECTION
P56  4-H
CD_R
CD_L
A_GND
8
7
6
5
4
3
2
1
–
+
+
–
a b c d e
f
g
h
i
j
k
l m n
L M N K H E G F I
J
MAIN PWB-A1 (2/3)
+B
+B
+B
+B
+B
+B
+B
+B
+B
-B
-B
-B
-B
CD SIGNAL 
RECORD SIGNAL 
PLAYBACK SIGNAL 
FM SIGNAL 
SWITCHING
SYSTEM MUTE 
SYSTEM MUTE 
1
1
2
3
2
3
1
11
8
4
5 3 6 9 12 10 13 2
14
7
MD
_
RCH
MD
_LCH
AUX
INPUT 
2
1
3
2
1
3
IC503
MD
_
LCH
MD
_R
CH
CD/MD_L 
1
2
TO MICROCOMPUTER SECTION
P57  10-H
MD SIGNAL
CD-MD3000H/CD-MD3000W
– 64 –
Figure 64 SCHEMATIC DIAGRAM (11/16)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 46.
CD-MD3000H
13
12
11
9 
10
2
3
2
3
1
1
C844
3.3/50
C223
10/50
C224
10/50
RP803
0.7
C811
0.001
LED801
K5052UL
R836
270
RP807
0.7
C801
0.022
R802
6.2K
C802
0.022
R804
4.7K
IC803
NJM431L
VOLTAGE
REGULATOR
Q801
2SD2012
Q803
KTC3199 GR
R808
220
RP801 
FR252
100
Fusible
CNP807
FR213 100
 Fusible 
FR214
100
Fusible  
R830
100
CNP805
C209
100/50
R813
1.5K
C821
100/25
C820
0.047
(ML)
C822
10/50
R809
22K
C818
6800/16
R803
22K
R821
470
C838
220/16
Q810
KTC3199 GR
DZ804
MTZJ10B
R822
1.5K
C840
0.022 
C837
0.022
Q809
2SD2012
C839
100/16
R820
470
R807
22K
C815
0.1
C814
47/25
C816
0.1
C817
6800/25
Q805
KTC2026 
C807
0.047
(ML)
R806
22K
C810
22/50
C230
0.15
C229
0.15
C221
0.015(ML)
C222
0.015(ML) 
C213   0.022
C217
100P(CH)
C211
0.15(ML)
C212
0.15(ML)
C207
0.15
CNP806
DZ803
MTZJ9.1B
Q806
KTA1046 Y
C819
470/25
C238
100/50
R215
22K
R244
1K
C232
0.0015
R246
820
C234
1/50
C236
15P
R248 56K
R250
1K
R256
0.1(1W)
C240
0.022
R258
10K
R260
1K
2
Q204
KTC3199 GR
R261
56K
R230
0.22(2W)
R220
0.22(2W)
R229
0.22(2W)
R219 0.22(2W)
C205
15P
R209 1K
R205
56K
R203
820
C203
47/50
D205
DS1SS133
R201
1K
D201
DS1SS133
Q206
KTC3199 GR
C251
47/50
R262
56K
R278
56K
Q201
KTC3199 GR
R231
1K
IC201
STK40271(2Ch)
POWER AMP.
R225
10K
C215
0.022
R223
0.1
(1W)
D202
DS1SS133
Q202
KTC3199 GR
R232
1K
R226
10K
C216
0.022
R224
0.1
(1W)
 
R210
1K
R206
56K
C206
15P
C204
47/50
R204
820
C202
220P
R202
1K
C210
100/50
C201
220P
Q205
KTC3199 GR
R216
22K
R239
1K
C225
220P(CH)
C226
220P(CH)
R238
68K
R237
68K
R233
100K
R234
100K
R212
18K
C208
0.15
R211
18K
C247
47/50
C248
0.022
R241
68K
R242
68K
C219
10/50
C220
10/50
R235
1.8K
R236
1.8K
R240
1K
R221    4.7K
R217
18K
C218
100P(CH)
C228
2.2/50
C227
2.2/50
C249
47/25
C250
0.022 
C214
0.022
R222
4.7K
R218
18K
R277
330
IC203
KIA4558P
OPE AMP.
8 
7 
6 
5 
4 
3 
2 
1 
R227
8.2K
R228
8.2K
5 
2 
7 
1 
6 
4 
3 
8 
15
14
13
12
11
9 
8 
6 
7 
5 
4 
3 
2 
1 
10
+ 
+ 
–
–
IC802
IC802
KIA7810AP
VOLTAGE 
REGULATOR  
IC803
IC203
BI804
CNS804
Q813
KRA107 M
Q812
KRC107 M
8 
7 
6 
5 
4 
3 
2 
1 
15
14
13
12
11
10
9 
+
–
–Vcc
Ch2
Ch2
Out
+
–
+Vcc
Ch1 
Out
Ch1
-B
+B
Ch1
Out
Ch1
–
+
+Vc
7 
6 
5 
4 
3 
2 
1 
8
TO MAIN
PWB
BI960
P56   6-H
CD_GND
M_GND
CD_+B
M_10V
A_GND
A_+10V
M_10V
M_GND
CD_GND
CD_+B
A_GN
A_+10V
A_GND2
R-CH
L-CH
+B
+B
+B
+B
+B
A_GND2
+B
+B
+B
+B
-B
TO MAIN
PWB
BI950
P57   8-H
-B
+B
+B
+B
D_GND
FAN_CTL
D_GND
-8V
AC_RLY  CTL
UN_SW  5V
SP_RLY
SP_DET
A
B
C
D
A_+10V
A_GND 
M_+10V
BIAS_GND
TO DECK
SECTION
P62  3-A
+5V
+5V
GND
GND
GND
+B
+B
+B
+B
-B
-B
+B
+B
+B
+B
+B
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
+B
-B
+B
5
4
6
8
1
2
7
8
7
3
7
8
3 
2 
1 
3 
2 
1 
+B
+B
+B
+B
+B
8.4V
0V
0V
0V
0V
0V
0V
-8.2V
VOLTAGE
REGULATOR
5 
4 
6 
1 
2 
3
5 
1 
3
4
6
2
+B
+B
+B
-B
+B
-0.2V
-0.2V
36V
37V
-35V
-37V
-36V
0V
0V
0V
0V
0V
-0.2V
-0.2V
4.6V
4.6V
4.6V
4.6V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.6V
-0.2V
-0.2V
30V
31V
0V
0V
-30V
11.3V
17V
12V
10V
17V
0V
8.6V
17V
17V
9.2V
9.8V
9.2V
-19.5V
-8.3V
-9V
(11.1V)
(5.1V)
(5.9V)
(11.1V)
(6.5V)
(0V)
(6.5V)
(2.5V)
– 65 –
CD-MD3000H/CD-MD3000W
Figure 65 SCHEMATIC DIAGRAM (12/16)
7
8
9
10
11
12
-
+ 
+ 
-
+ 
-
+ 
-
C241
10/50
C242
10/50
R281
12(1/2W) 
R207
2.7(1/2W) 
COR801
R213
100
RP805
2.2
Q200
KRC102 M
C200
47/16
R200
100
CNP204
FR251
100
Fusible   
C258
100/16
DZ201
MTZJ5.6B
R299
3.9K
D210
DS1SS133
C257
10/50
R283
470K
R284
1K
Q210
KTC3199 GR
Q212
2SA562 Y
R251
10K
Q211
KTC3199 GR
C237
100/50
CNP207
C252
2200/50
C253
3300/63
C254
3300/63
C255
2200/50
R275
22K
R276
22K
R273
22K
D208
DS1SS133
RY202 
Q209
KTC3199 GR
R268
330(1/2W)
R274
22K
RY201 
D207
DS1SS133
R270
330(1/2W) 
R269
330(1/2W) 
R267
330(1/2W)
R254
10K
R253
1K
R272
4.7(1/2W)
R271
4.7(1/2W)
C246
0.1(ML)
C245
0.1(ML)
BI201A
C243
0.1(ML)
R265
4.7(1/2W)
R266
4.7(1/2W) 
C244
0.1(ML)
R264
56K
R280
56K
R263
56K
C256
47/50
IC202
STK40204(2Ch)
POWER AMP.
D204
DS1SS133
C231
0.0015
6
W)
R260
1K
R298
22K
R297
22K
204
99 GR
R255
0.1(1W)
C239
0.022
R257
10K
R259
1K
Q203
KTC3199 GR
Q208
KTC3199 GR
D203
DS1SS133
R243
1K
D206
DS1SS133
C233
1/50
R245
820
R247
56K
R249
1K
C235 15P
Q207
KTC3199 GR
CNP203
D808
2A02M
D810
2A02M
C829
0.047(ML)
D811
2A02M
D809
2A02M
C828
0.047(ML)
CNS200
F802
T2.5A L250A
BI808
CNS808
F804
T5A L 250V
F803
T5A L 250V
F806
T3.15A L 250V
D816 TS6B04GM 
C833
0.022
C832
0.022
C831
0.022
D817 TS6B04GM 
C834
0.022
F805
T3.15A L 250V
R835
56
R834
56
D802
1N4004S
F808
T2A L 250V
F801
T2A L 250V
C827
0.047
D807
1N4004S 
D805
1N4004S 
C826
0.047
D804
1N4004S 
D806
1N4004S
CNP803
CNP802 
CNP801
T801
MAIN POWER
TRANSFOMER
F807
T3.15A L 250V  
C836 0.0047
RY801 
D819
DS1SS133
L802
LINE FILTER
D812
1N4004S 
D815
1N4004S 
D814
1N4004S 
D813
1N4004S 
C835
0.047
(ML) 
C830
470/35
C825
1000/6.3
D818
DS1SS133
T802
SUB POWER 
TRANSFORMER
IC808
KIA7805AP
C824
0.047(ML) 
C823
100/16
Q807
KTC3199 GR 
R814
100 
R815
47K 
C265
0.01
C263
0.01
C280 0.001
C279 0.001
C281 0.001
C282 0.001
C261
0.01
R287
6.8 
R285
6.8 
C259
0.01
L201
0.29
µ
H
C268
0.01
R290
6.8 
C272
0.01
R292
6.8 
C270
0.01
C274
0.01
L204
0.29
µ
H
C278 0.001
C277 0.001
R291
6.8 
C269
0.01
C271
0.01
C267
0.01
L203
0.29
µ
H
R289
6.8 
C264
0.01
R286
6.8 
C260
0.01
C266
0.01
C262
0.01
L202
0.29
µ
H
R288
6.8 
C273
0.01
BI201B
IC202
IC808
KIA7805AP
CONSTANT VOLTAGE
REGULATOR
Out
Ch2
Ch2 
–
+
+Vcc
–Vcc
12
11
10
9 
8 
15
14
13
+B
+B
POWER PWB-D1 (1/2)
MO200
 FAN
MOTOR
+ 
2 
1 
2 
1 
FROM 
HEADPHONES
 PWB
CNS730
P57   8-C
+B
FAN MOTOR
DRIVER
+B
1 2 3 4 5 
-B
5 
4 
6 
8 
1 
2 
7 
3 
1 
2 
3 
4 
M
5
4
4
5
+B2 
1 2 3 4 5 
1 2 3 4 5 
+B1 
+B
-B
-B
+B
-B
+B
5 
2 
4 
1 
2 
3 
4 
5 
3 
1 
3 
2 
1 
1 
2 
3 
T.F.
2 
1 
2 
1 
SUB TRANS PWB-D2
FM  SIGNAL 
When Servicing, pay attention as the
area enclosed by this line (             ) is
directly connected with AC main voltage.
AC POWER
SUPPLY
CORD(239)
AC 230V,
50Hz
(251)
(251)
+B
+B
+B
+B
3 
2 
1 
RELAY DRIVER
6 
8 
2 
5 
1 
3 
7 
4 
SPEAKER PWB-D3
MAIN
MAIN
SUB 
WOOFER
SP L-CH
SP R-CH
GND
SP R-CH
SP L-CH 
GND
SP L-CH
SP L-CH
GND
SP R-CH
SP R-CH
GND
SO201
SPEAKER
TERMINALS 
 
0V
0V
0V
0V
0V
0V
0V
0V
4.6V
4.6V
4.6V
31V
0V
0V
0V
-30V
-31V
-0.2V
-0.2V
4.6V
0V
0V
0V
0V
8.2V
0V
8.6V
4V
2.7V
0V
0V
0V
0.1V
0.8V
0.8V
1
2
3
5.7V
10V
0.7V
0.2V
0V
0.8V
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