Sharp CD-BA250H Service Manual page 29

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