Sharp CD-BA1200H Service Manual page 25

01
PLAY
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
6 87 88 89 90 91 92 93 94 95 96 97 98 99 100
VDD 1
2
-20dBATT
S-BUSY 3
100
9G
R702
4
T-BIAS
R703
T_T1/T2 5
R704
REC/PLAY 6
R705
7
RES OUT
R706
8
DRF
R707
WRQ 9
R708
RESET 10
X2 11
IC701
12
X1
IX0337AWZZ
VPP/IC 13
XT2 14
SYSTEM
CD INT 15
MICROCOMPUTER
VDD 16
17
CD CLK
CD DI 18
CD DO 19
KEY 0
31 CD CE 20
32 KEY 1 21
CE
33 KEY 2 22
CLK
T2 PLAY SW_B 23
54 DI
DO 24
53 T1 PLAY SW_A
AVSS 25
52 CD CLAMP SW
M-BUSY/TUN SM 26
51 T2 RUN
SPEANA3 27
SPEANA2 28
SPEANA1 29
SPEANA0 30
5 44 43 42 41 40 39 38 37 36 35 34 33 32 31
+B
LED722
4204SRT7
+B
+B
R775
10K
R776
10K
R777
10K
31
273Y
7
32 33
Q701
R779
KRC107M
3.3 (1/2W)
2 3
C707
R744
1
1/50
1K
R745
100K
C702
C701
220/10
0.022
+B
1K
1K
1K
1K
1K
1K
1K
C703
15P
XL701 C704
18P
R709 1K
+B
R710 1K
R711 1K
R712 1K
R713 1K
R714 1K
R715 1K
R716 1K
R717 1K
R718 1K
+B
R725
1K
+B
+B
+B
8
Figure 25 SCHEMATIC DIAGRAM (6/10)
R769
10K
+B
5V BACK UP
D708
L701
1SS133
100µH
RESET
2
RD13 RD14 RD16
RD15
680 820 1K 1.5K
SW716
SW715 SW717
SW714
TUNING/
MEMORY/
REWIND
TAPE
TIME
CD
SET
DOWN
RD25
680
RD10 RD12
RD11
820
1K 1.5K
SW711
EQUALIZER/ SW712
X-BASS/DEMO VOLUME UP
RD01 RD02
RD03
RD04
680 820 1K
1.5K
SW703
SW701
TIMER/
ON/STAND-BY
SLEEP
SW702
CLOCK
9 10
– 25 –
BI702
CD INT
1 1 CD INT
WRQ(DSP)
2 WRQ(DSP)
2
DRF
3 3 DRF
CD CE
CD CE
4 4
CD DO
5 5 CD DO
CD DI
CD DI
6 6
CD CLK
CD CLK
7 7
RES OUT
RES OUT
8 8
CLAMP SW
CLAMP SW
9 9
CD_GND
D_GND
10
10
CNS702
1 TUN SM
2 CE
3 DO
4 DI
5 CLK
T_BIAS
6
T_T1/T2
7
8 REC/PLAY
M_GND
9
10 M_10V
11 SMUTE
12 VF1
-VP
13
VF2
14
AC_RLY CONT
15
+B
16 UN_SW 5V
D_GND
17
+B
SW_5V
18
19 POWER
20 SPAN
21
SW OUT
+B
+B
R772
4.7K
D710
IC704
1SS133
KIA7042AP
RESET
+B
1
3
C715
RX701
3.3/50
2 REMOTE SENSOR
3
1
1 2
C716
C717
0.022
10/50
RD17 RD18 RD19 RD20 RD21 RD22
3.9K
2.2K 2.7K 5.6K 10K
SW723
SW718 SW719 SW720
SW721
FAST PLAY/ REC/
STOP
FORWARD REPEAT
PAUSE
SW713
VOLUME
DOWN
RD08 RD09
RD05 RD06 RD07 RD26
3.9K 56K 100K
2.2K 2.7K 6.8K
SW709
DISC
SKIP
DISPLAY PWB-A2
11
CD-BA1200H
P21 12 - F
CNP12
TO CD SERVO
PWB
FFC21
1
P23 12 - D
CNP701
TO MAIN PWB
21
+B
D711
1SS133
R773
100
3
C719
C718
47/16
0.022
RD23 RD24
100K
15K 33K
SW725
SW724
TUNER
TUNING
(BAND)
UP
SW710
OPEN/
CLOSE
12