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XL-3500 (serv.man14). Block diagram - Sharp Audio Service Manual (repair manual). Page 3

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– 23 –
XL-3500H
Figure 23 BLOCK DIAGRAM (3/3)
VOLTAGE
REGULATOR
3 
1 
3 
2 
1 
AC INPUT
SOCKET
AC230V,50Hz 
AC 230V,50Hz 
AC POWER SUPPLY CORD
LINE
FILTER
POWER
TRANSFORMER
(SUB) 
CNP681
SO651 
LF651 
IC681
AN78L05
CONSTANT 
RLY601
T681
D681~D684
Q683
5
4
3
2
5
4
3
2
1
1
3 
1 2 
2 
POWER
TRANSFORMER
(MAIN)  
TF
T651
T4A  L 250V
CNP651
F652
T4A  L 250V
F651
T1.25A  L 250V
F653
Q604
Q605
D651~D654
D657~D660
Q105
Q106
Q109
Q108
Q103
Q104
Q101
Q102
Q603
Q601
Q602
M
M802
FAN MOTOR
Q881
Q882
Q883
Q884
Q606
Q607
CD +B
+B
+B3
–B
–B
CD_7.2V 
+B1
+B2
+B3
+B4
+B3
M_12V 
A_12V
15
13
10 11  
7 
6 
8
1
IN1
GND
VE2
VE1
+VCC
9
–VCC
IN2
POWER AMP.
IC101
STK40203
L-CH
L-CH
R-CH
R-CH
R-CH
L-CH
SPEAKER TERMINAL
+ 
+ 
SO601 
HEADPHONES
1 
2 
3 
4 
5 
9 
10
J601
VSS 
VDD
IC401 
LC75342M
15
14
13
12
11
10
9 
17
18
19
20
21
22
23
24 
25
26
27
28
29
16
8 
7 
6 
5 
4 3 2 1 
CE
DI
30
CL
LOGIC 
TUN  L 
CD  L
TUN  R
R-CH OUT
R-CH OUT
L-CH OUT
R-CH IN
L-CH IN
L-CH OUT
A_12V
NC
FUNCTION/VOLUME
EQUALISER  
AUX  R
AUX  L
CD  R
MUTE
VOLTAGE
REGULATOR
+B6
L
IL 
UP UNIT 
D_GND 
MAIN PWB
+B4
+B2
+B
Q201
Q203
Q107
Q891
2 
3 
1 
A_GND
CD_L
CD_R
1 
2 
3 
4 
5 
1 
12 
11 
10 
9 
8 
7 
5 6 
4 
2 3 
13 
P_MUTE
CD  +B
CL
DI
CE
DO
FM  ST
SD
VSM
DATA
RDS  CLK
A_GND
TUN  R
TUN  L
D
_
GND
A_12V
D_GND
SURROUND
M
PWB
FROM
DISPLAY PWB
5 6 7 8 
4 3 2 1 
SURROUND
CONTROL
1 
2 
3
PROTECT 
AMP_DET
SP_RLY
FROM
DISPLAY PWB
1 2 3 4 5 6 7 
M_GND
M_12V
FAN_CONT
FAN_DEC
USWD_5.6V
P_CONT
D_GND
FROM
DISPLAY PWB
KIA4558P
CNP803
CNP702
IC201
CNP703
CNP701
RLY101
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