SM-SX1 (serv.man2). (including circuit diagrams and s) - Sharp Audio Service Manual (repair manual). Page 13

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SM-SX1H
– 13 –
 Figure 13 BLOCK DIAGRAM (2/2)
ICA4~ICA7
FET DRIVER
HIP2100
1
1
3
6
1
3
1
3
2
17
14
15
22
23
6
5
2
3
20
1
4
13
10
3
6
5
6
3
8
8
11
IC651
Q651,Q652
Q653,Q654
2
OG
ANALOG AMP.
Q313~Q328
IC308
IC302,IC303,
D304~D308,
Q305~Q307
1BIT UNIT SECTION
VRA1~VRA4
DIGITAL INPUT
ANALOG 
INPUT
SWITCHING
LOGIC CIRCUIT
Q203
Q204
RLY201
RLY202
N
Q801
Q802
Q803
L
R
Q311
IC307
NJM4558M
MOTO
DRIVER
Q303
RLY303
R307
+22
G
1bit
+22V
1bit
-12V
1bit
-22V
IC301
NJM431U
REGULATOR
-22V
UNIT501
AC/DC
CONVERTER
UNIT502
AC/DC
CONVERTER
IC302
DC/DC
CONVERTER
TZ0775AF
IC306
NJM431U
Q306
Q307
IC303
NJM78M05
+12V
1bit
Dig+5V
Ana+5V
+5V
(Digital)
RELAY/SW/
µ
COM
+5V
OPE AMP. +10V
IC304
NJM78M12
+10V
IC304
NJM78M12
SW501
POWER 
LINE
FILTER
F501
T3.15A L
250V
SOC501
AC INLET
AC 230V, 50Hz
ANALOG
ICA2
NAND GATE
74AC00F
ICA3
AND GATE
TAC08F
QA1~QA8
LEVEL SHIFT
QA9,QA10
POWER
SWITCHING
LPF
Netwark
ICA1
7TH ORDER       
MODULATION
CONVERSION
LSI
IX2815AF
FEEDBACK CIRCUIT
FEEDBACK LEVEL
ADJUSTMENT
PROTECT
OFFSET 
DETECTION
SPEAKER
TERMINAL

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