Sharp XL 1700 - Executive Microsystem Service Manual page 21

M
PWB DISPLAY PWB
5 4 3 2 1 1
2 3 4 5 6
+B4
CNP803
CD_L
1
2
CD_R
3
A_GND
UP UNIT
L
IL
+B1
+B2
+B3
+B4
FROM
CNP702
7 8 9 10 11 12 13
+B2
Q203
MUTE
Q101
Q102
R-CH
F652
2.5A 125V
D651~D654
F653
1.6A 125V
D_GND
D657~D660
CD_7.2V
Q604
Q605
CD +B Q606
Q607
VOLTAGE
REGULATOR
M_12V
Q603
A_12V
Q601
Q602
Figure 21 BLOCK DIAGRAM (3/3)
R-CH IN
+B
IC201
5 6 7 8
KIA4558P
Q201
SURROUND
4 3 2 1
CONTROL
AUX R
TUN R
CD R
15 14 13 12 11 10 9 8
16 17 18 19 20 21 22 23
CD L
TUN L
IC401
AUX L
LC75342M
FUNCTION/VOLUME
EQUALIZER
IC101
LA4282
POWER AMP.
2 5 3 4
L-CH
+B
+B
Q105
Q106
4 4
3 3
2 2
1 1
TF
IC681
AN78L05
CONSTANT
VOLTAGE
REGULATOR
3 1
2
D681~D684
+B3
1 2 3 4 5 6 7
CNP701
FROM
DISPLAY PWB
AC 120V,60Hz
– 21 –
XL-1700/1700C
MAIN PWB
R-CH OUT
L-CH OUT
L-CH IN
R-CH OUT
7 6 5 4 3 2 1
LOGIC
24 25 26 27 28 29 30
L-CH OUT
+B6 A_12V
10 7 11 9 12
L-CH R-CH
Q103
Q104
+B3 Q108
Q109
1 2
CNP703
FROM
DISPLAY PWB
T651
POWER
TRANSFORMER
(MAIN)
1 2 3
2
1 3
CNP681
RLY601
Q683
T681
POWER
TRANSFORMER
(SUB)
SO651
AC INPUT
SOCKET
AC120V,30Hz
AC POWER SUPPLY CORD
+
L-CH
R-CH
+
J601
HEADPHONES
3
2
1
4
5
9
10