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CD-BA250 (serv.man5). Part 2 - Block diagrams (19-21) - Sharp Audio Service Manual (repair manual). Page 3

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– 21 –
CD-BA250H/CD-BA2600H
 Figure 21 BLOCK DIAGRAM (3/3)
+B7
UNSW  5 V
SW  +5 V
+B5 
D806
Q801
IC905
AN78L05
VOLTAGE  REGULATOR
D802-805
PT802
SUB  POWER
TRANSFORMER
PT801
MAIN  POWER
TRANSFORMER  
RL801
L801
LINE
FILTER
Q914
Q907
Q908
AC 230 V, 50 Hz
–VP
VF2
VF4 
Q901
+B6
SW  5 V
IC904 
KIA7805AP
CONSTANT VOLTAGE REGULATOR
+B4
+B3
+B1
–B1
-B2
+B6 
+B3
+B7
- 
- 
+B4
- 
- 
Q701-Q703
R
L
+B5
RX701 
REMOTE
SENSOR   
4
IC701
IX0401AW
(2/2)
1
2
8P
MP.
D902~D905 
D901
RY914
JK701
HEADPHONES
M901
FAN  MOTOR
M
Q906
Q709
Q902
Q903
Q905
Q904
Q603
Q604
Q612
Q613
IC903
KIA7810AP
VOLTAGE REGULATOR
IC902
KTC2026
IC901
STK4029S
POWER AMP.
F903
T2A  L 250V
F904
T2A  L 250V
F902
T4A  L 250V
F901
T4A  L 250V
+Vcc
–Vcc
L-OUT
R-OUT
CLK
MAIN
AC  POWER
SUPPLY  CORD
REC/PLAY
VLOAD
RESET
GROUND
+B7
+B7
+B7
+B7
+B5
VDD
VDD
VDD
SP.  DET.
- 
CE
DI
DO
XL700
4.194304 MHz
-
BIAS
T1/T2
AVDD
KEY
SW701-SW707
SW712-SW718
SW720-SW727
SW729-SW732
TO  CD
SECTION
IC701
IX0401AW
SYSTEM
MICROCOMPUTER(1/2)
FL701
FL DISPLAY
42
43
44
46 45
47
31
23
89
80
44
33
78
49
48
47
13
93
16
14
92
90
1
2 4
5 6
7
15
1
29
28
9
67
6
1
3
2
3
2
1
7
1
13
7 
8
10
100
33
31
11 12 13
9 10
15 16 17
20 21
23
22
24
79
64
54
52
53
51
48
49
40
39
36
35
34
T.F.
63
66 65
55
50
A+10 V
M+12 V
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