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Model
CD-BA1200 (serv.man8)
Pages
10
Size
615.97 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Part 3 - Schematic Diagrams
File
cd-ba1200-sm8.pdf
Date
PREV: Sharp CD-BA1200 (serv.man7) Service Manual

Sharp CD-BA1200 (serv.man8) Service Manual ▷ View online

CD-BA1200H
– 24 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
Figure 24 SCHEMATIC DIAGRAM (5/10)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 15.
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
P9
P10
P11
0V
0V
12V
12V
12V 
12V 
T2  PLAY
T2  RUN
+5V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+MTR
SOL2
SOL1
T1  RUN
GND
F_REC
T2 PLAY  SW_B
T1 PLAY  SW_A
T1 RUN
POWER 
F
9G
4G
3G
2G
1G
P17
P18
P19
P12
P1
8G
P2
P3
7G
6G
P4
P5
5G
P6
P7
P8
P9
P10
P11
P14
P20
P13
P16
P15
F
F
T-BIAS
T_T1/T2
VDD
X1
X2
AVDD
RESET
CD  CE
CD  DI
WRQ
CD  INT
P19
P12
P1
P2
P3
P4
P5
P6
P7
P8
P20
P13
CE
S-BUSY
REC/PLAY
RES  OUT
VPP/IC
CD  CLK
CD  DO
CLK
DI
DO
AVSS
M-BUSY/TUN  SM
SPEANA3
SPEANA2
SPEANA0
KEY 2
KEY 1
KEY 0
SYS STOP
NO USE
REMOCON 
VSS 
SMUTE 
T_SOL_A 
T_MOTOR 
TIMER  LED 
VDD 
AC RLY_CONT 
KARAOKE LATCH
DIST3
DIST2
DIST1
DIST0
VLOAD
P18
P17
5G
VDD
T_SOL_B 
CD CLAMP SW
T2  RUN
FPA
-20dBATT
DRF
XT2
SPEANA1
AVref 
FPB
MIC IN
SPN
DISTOUT/SW OUT
SPK_DET
SP_RLY
2
1
13
12
11
10
9
8
7
6
5
4
3
80
T1  PLAY
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
54
53
52
31
32
33
51
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
100
6G
7G
8G
1G
2G
3G
4G
9G
P14 
P15
P16
2
13
12
11
10
9
8
7
2
1
3
4
5
6
- 
- 
B 
A 
+ 
M 
TAPE MECHANISM PWB-E
TAPE
MOTOR
SOLENOID
SOLENOID
T2 PLAY
R.PLAY
T1 PLAY
F.PLAY
PH
PH
R737 1K
D703
1SS133
D702
1SS133
C710
47/25
C708
1/50
R743
33
C705
100/10
R748 10K
R751 10K
R750 10K
R749 10K
R753 10K
D701
1SS133
D712
1SS133
R742 1K
R741 1K
R734 1K
R733 1K
R735 1K
R736 1K
R778 1K
R792 1K
R732 1K
R726 2.2K
R727 2.2K
R728 2.2K
R729 2.2K
R730 1K
R719
1K
R720
1K
R721
1K
R722
10K
R724
1K
IC701
IX0337AWZZ
SYSTEM
MICROCOMPUTER
LED722
4204SRT7 
R755
4.7K
R777
10K
R776
10K
R775
10K
R757
68K
R756
68K
R758
10K
R759
10K
Q702
2SC3331
R763
47K
D705
1SS133
Q703
2SC3331 
R762
47K 
D704
1SS133
C712
10/16
C711
10/16
R761
1K
R760
1K
R766
10K
Q704
KTA1271Y
Q705
KTA1271Y
R767
10K
Q706
KTA1273Y
R768
10K 
R7
R7
R7
R7
R7
R7
R7
R7
R7
X
R70
R70
R70
R70
R70
R70
R70
FL701
FL DISPLAY
CNP703
FFC13
R7
– 25 –
CD-BA1200H
Figure 25 SCHEMATIC DIAGRAM (6/10)
7
8
9
10
11
12
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
3 
2 
1 
3
2
1
POWER
SPAN
SW OUT
UN_SW 5V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
T2 PLAY  SW_B
T1 PLAY  SW_A
F 
F
9G
4G
3G
2G
1G
P17
P18
P19
P12
P1
8G
P2
P3
7G
6G
P4
T-BIAS
T_T1/T2
VDD
X1
X2
AVDD
RESET
CD  CE
CD  DI
WRQ
CD  INT
P19
P12
P1
CE
S-BUSY
REC/PLAY
RES  OUT
VPP/IC
CD  CLK
CD  DO
CLK
DI
DO
AVSS
M-BUSY/TUN  SM
SPEANA3
SPEANA2
SPEANA0
KEY 2
KEY 1
KEY 0
SYS STOP
NO USE
REMOCON 
VSS 
SMUTE 
T_SOL_A 
T_MOTOR 
P18
P17
5G
VDD
T_SOL_B 
CD_GND
CD  INT
WRQ(DSP)
CLAMP  SW
CD  DO 
CD  DI 
CD  CE 
CD  CLK
VF1
VF2
-VP
SMUTE
D_GND
SW_5V
CD CLAMP SW
T2  RUN
-20dBATT
DRF
XT2
SPEANA1
AVref 
DRF 
REC/PLAY
T_T1/T2
T_BIAS
RES  OUT 
AC_RLY CONT
M_10V
DI
CE
TUN SM
CLK
5V  BACK  UP
DO
M_GND
SP_RLY
6
11
10
9
8
7
2
3
4
5
12
13
14
15
16
17
18
19
10
9
8
7
6
5
4
3
2
1
1
20
21
54
53
52
31
32
33
51
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
5 44 43 42 41 40 39 38 37 36 35 34 33 32 31
6 87 88 89 90 91 92 93 94 95 96 97 98 99 100
100
6G
7G
8G
1G
2G
3G
4G
9G
2
1
3
21
1
CNP701
TO MAIN PWB
P23  12 - D
CD  INT
WRQ(DSP)
DRF 
CD  CE 
CD  DO 
CD  DI 
CD  CLK
RES  OUT 
CLAMP  SW
D_GND 
10
9
8
7
6
5
4
3
2
1
CNP12
TO CD SERVO
PWB
DISPLAY PWB-A2
P21  12 - F
RESET
R726 2.2K
R727 2.2K
R
728 2.2
K
R719
1K
R720
1K
R721
1K
R722
10K
R724
1K
IC701
IX0337AWZZ
SYSTEM
MICROCOMPUTER
LED722
4204SRT7 
R755
4.7K
R725
1K
R777
10K
R776
10K
R775
10K
31
273Y
SW710
OPEN/
CLOSE 
SW709
DISC
SKIP
RD09
100K
RD08
56K 
RD01
680
SW701
ON/STAND-BY
RD02
820
SW702
CLOCK
SW703
TIMER/
SLEEP 
RD03
1K
RD04
1.5K
RD05
2.2K
RD07
3.9K
RD06
2.7K
RD26
6.8K
RD25
680
SW711
EQUALIZER/
X-BASS/DEMO
RD11
1K
RD10
820
SW712
VOLUME UP
RD12
1.5K
SW713
VOLUME
DOWN
RD13
680
RD14
820
RD15
1K
SW723
REC/
PAUSE
RD22
15K 
SW724
TUNING
UP
RD23
33K 
SW721
STOP
RD19
3.9K
RD17
2.2K
RD20
5.6K
SW718
REWIND
RD21
10K 
SW717
MEMORY/
SET 
RD18
2.7K
SW720
PLAY/
REPEAT
RD16
1.5K
SW719
FAST
FORWARD
SW716
TUNING/
TIME
DOWN
SW715
TAPE
SW714
CD
RD24
100K
SW725
TUNER
(BAND)
R770
47K 
D708
1SS133
C713
0.1/50
RX701
REMOTE SENSOR
D711
1SS133
D710
1SS133
D709
1SS133
R771
100K
C717
10/50 
C715
3.3/50
D707
1SS133
C714
0.01
Q707
KRC102M 
C716
0.022 
L701
100
µ
H 
R772
4.7K
R773
100 
C718
0.022 
C719
47/16
IC704
KIA7042AP
RESET
CNP701
D706
1SS133
R769
10K 
R717 1K
R716 1K
R715 1K
R714 1K
R713 1K
R712 1K
R711 1K
R710 1K
R709 1K
XL701 
C704
18P 
C703
15P 
R706 1K
R703 1K
R702 1K
R707 1K
R704 1K
R708 1K
R705 1K
C702
220/10
C701
0.022
R745
100K
R779
3.3 (1/2W)
C707
1/50
Q701
KRC107M
R744
1K
BI702
01
PLAY
2
1
3
CNS702
FFC21
R718 1K
CD-BA1200H
– 26 –
Figure 26 SCHEMATIC DIAGRAM (7/10)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 15.
12
11
10
9
8
7
6
5
4
3
2
1
3
2
1
3
2
1
+5V (CD  +B)  
SW_5V
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
M 10V
GND
(A_GND)  
A 10V
GND
(A_GND) 
VF2
-VP
VF1
POWER
GND (M_GND)  
L
R
GND (CD_GND) 
GND (D_GND)  
UN SW 5V
AC_RLY_CONT
R  OUT 
L  OUT 
GND1
POWER 
OUT1
Vcc 
GND2
POWER 
OUT2
NF2 
IN2 
PRE-GND 
IN1 
NF1 
CH2 
CH1 
VOL.  PROTECTOR
OVER
THERMAL 
CIRCUIT 
MUTE
FILTER
RIPPLE
P22  1 - C, P23  11 - H
TO MAIN SECTION
3
2
1
4
22
17
4
18
19
12
5
15
14
16
21
10
12
11
13
20
2
2
1
1
3
3
SP. DET.
SP. DET.
IC905
KTC2026
C935
22/25
C934
0.047(ML)
R922
22K
R923
33
D918
1SS133
R925
22K 
C938
47/25
C939
0.1 (ML)
C940
0.1 (ML)
IC902
KIA7810AP
VOLTAGE
REGULATOR
R926
10K
C943
47/25
C944
0.022
D904
1SS133
D903
1SS133
C942
47/25
C941
0.047(ML)
C945
0.1 (ML)
IC904
KIA7805P
VOLTAGE REGULATOR
IC903
AN78L05
CONSTANT 
VOLTAGE REGULATOR
C933
68P
K
R930
220
R929
220
C954
100/50
R928
12K
C955
C947
3300/25 
D
1
D911
1N4004S
D913
1N4004S
D91
1N4
C946
2200/35 
ZD903
MTZJ6.2A
R915
820
Q902
KRC102 M 
R914
22K
Q901
KRC102 M
C918 220P
R909
56K
C914
470/25
R908
120
R906
1K
R911
270
(1/2W)
R912
4.7
C916
0.1(ML)
C912
0.1(ML)
R910
270
(1/2W)
C909
0.082(ML)
R907
1K
R905
120
C905
0.022
C903
470P
C908
0.082
(ML)
C904
470P
C907
100/25
C906
47/25
C910
100/25
C919
10/50 
C911
0.022
R913
4.7
C917
0.1(ML)
C913
0.1(ML)
C915
470/25
IC901
LA4282
POWER AMP.
C936
100P
C937
100P
– 27 –
CD-BA1200H
Figure 27 SCHEMATIC DIAGRAM (8/10)
7
8
9
10
11
12
+B
R  OUT 
L  OUT 
SP_Lch
SP_Rch
SP_Lch_GND
SP_Rch_GND 
2
3
4
5
6
2
3
4
5
6
1
1
1
2
1
2
+
+
–
–
SPEAKER
FM SIGNAL 
MAIN PWB-A1 (2/3)
AC POWER
SUPPLY CORD
AC 230V, 50Hz
HEADPHONES PWB-A3
When Servising, pay attention as the
area enclosed by this line(                 ) is
directly connection with AC main voltage.
1
5
5
1
Q904
KTA1266GR 
R930
220
R929
220
C954
100/50
R928
12K
C955
47/50
C947
3300/25 
D917
1N4004S
C956
47/50
ZD902
DZ30BSB
R927
2.2K
C957
47/50
C958
100/50
C959
100/50
D916
1N4004S
D915
IN4004S
C953
0.047
(ML)
C952
0.047
(ML)
D912
1N4004S
D911
1N4004S
D913
1N4004S
D914
1N4004S
CNP901
D910
RL203F
D909
RL203F
D907
RL203F
D908
RL203F
C950
0.047
(ML)
F902
T1.6A L 250V
F901
T2.5A L250V
C946
2200/35 
C951
0.047 
(ML)
ZD903
MTZJ6.2A
PT801
MAIN POWER
TRANSFORMER
T.F
CNP801
SO902
AC INPUT
SOCKET
SO901
SPEAKER
TERMINAL
R916
330
C921
220P
C922
220P
L903
2.2mH
R917
330
JK901
HEADPHONES
FW902 
L901
0.29
µ
H
L902
0.29
µ
H
R921
6.8
C923
0.022
C927
0.022
R919
6.8
C925
0.022
C929
0.022
R920
6.8
C924
0.022
C928
0.022
R918
6.8
C926
0.022
C388
0.001
C932 0.001
C931 0.001
R940
56
R939
56
C930
0.022
D801
1SS133
C801
0.0047/250
RL801
L801
LINE
FILTER
C802
0.047(ML)
D802
1N4004S
D803
1N4004S
D804
1N4004S
D805
1N4004S
PT802
SUB POWER
TRANSFORMER
C805
0.001
C803
470/35
C804
1000/6.3
R804
220
R805
47K
Q803
2SC3331
R806
10K
D806
1SS133
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