Sharp CD-BA250H Service Manual page 29

25 24 23 16 15 14 13 12 11 10 9 8 7 6 3
87 88 89 90 91 92 93 94 96 97 98 99 100
95
1
VDD
2
–20 dB
3
DSA_STB
4
T-BIAS
5
T_T1/T2
6
IC701
REC/PLAY
7
RES OUT
IX0401AW
8
DRF
SYSTEM
9
WRQ
ROCOMPUTER
10
RESET
11
X2
12
X1
13
Vpp/IC
14
XT2
4.194304 MHz
DO
SPAN 15
I
16
VDD
R709
TB
17
CD CLK
R710
K 18
CD DI
R711
POW 19
CD DO
R712
20
CD CE
R713
21
CE
R714
PLAY SW_B 22
54 28 CLK
SPEANA2
R715
53 NO USE 29 SPEANA1 DI 23
R716
CD CLAMP
SPEANA0
52 30 DO 24
SW
AVSS
T2 RUN 25
51
O/C SW/ R717
26
DSA DATA
R737
TUN SM 27
DSA_ACK
28
29
30
44 43 42 41 40 39 38 37 36 35 34 33 32 31
LED701
SLR342VCJ
R766
10K
R767
10K
R768
10K
7
TO CD SERVO PWB
P23 12-B
CNP8
9 8 6 5 4 3 2 1
7
5 4 3 2 1
9 8 7 6
2 1
C701
1/50
R702 1K
R703 1K
R704 1K
R705 1K
R706 1K
R707 1K
R708 1K
C704
15P
C705
XL700
18P
1K
1K
1K
1K
1K
1K
1K
1K
1K
1K
+B
+B
8
Figure 29 SCHEMATIC DIAGRAM (8/9)
CNS8
CD SECTION
R773 1K
-B
L701
100µH
5 V BACK UP
R781
47K
C715
0.01
RD18 RD19 RD20
RD21
680 820 1K
1.5K
SW720 SW721
SW722 SW723
CD TAPE TUNING MEMORY/
DOWN SET
RD13 RD14 RD15
RD30
680 820 1.8K
5.6K
SW714 SW715 SW716
DIMMER X-BASS EQUALIZER
RD01 RD02 RD03 RD04
680 820 1K 1.5K
SW702
SW701 SW703 SW704
ON/ CLOCK TIMER
RTY
STAND-BY
9 10
– 29 –
CD-BA250H/CD-BA2600H
1 RDS-RST
2 RDS-RDDA
3 RDS-RDCL
4
RDS-READY
5
TUN SM
6
CE
7 DO
8 DI
9 CLK
10
D_GND
11 T_BIAS
12
T_T1/T2
13 REC/PLAY
14 SMUTE
SPA_SIG
15
16
A_GND
+B
M_+12 V
17
-B
18 –15 V
19 –20 dB
20
M_GND
+B
21
SW_5V
+B
22
UN_SW 5V
23
SP_DET
24
SP_RLY
25 VF1
26 –VP
27
VF2
28 P-IN
CNS701
+B
BI803
SW_5 V
+B
1
UN_SW_+V
2
UN_SW_5 V
3
GND
4
AC_RLY_CONT
5
P_IN
6
+B
+B
D711
DS1SS133
+B
D713
+B
DS1SS133
RX701
REMOTE SENSOR
N63H380A
Q709
KRC102 M
2
3
1 2 3
1
RD22 RD23 RD24 RD25 RD26
2.2K 2.7K 3.9K 5.6K 10K
SW724 SW725 SW726 SW727 SW729
FAST FAST PLAY STOP REC/PAUSE
REWIND
FORWARD
RD17
RD16
3.9K 180K
SW717 SW718
VOLUME VOLUME
UP DOWN
RD05 RD06 RD08 RD09
RD07
2.2K
2.7K 3.9K 5.6K 10K
SW705 SW706
SW707
EON ASPM
DISPLAY
MODE
11
FFC701
1
CNP701
TO
MAIN PWB
P25 12-D
28
CNS803
1
2
3
CNP803
4
5
TO
POWER PWB
6
P26 6-G
IC905
AN78L05
3 1
CONSTANT
2
VOLTAGE
REGULATOR
+B
D714
DS1SS133
R783
100
C717
47/50
RD27 RD28 RD29
18K 33K 100K
SW731
SW730
SW732
VIDEO
TUNING TUNER
UP
RD12
RD10 RD11
100K
18K 33K
SW712 SW713
OPEN/
DISC SKIP
CLOSE
12