SD-CX1 (serv.man6). Part 3 - Notes on diagrams, Block diagrams - Sharp Audio Service Manual (repair manual). Page 3

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– 39 –
SD-CX1H
 Figure 39 BLOCK DIAGRAM (2/4)
TO MAIN SECTION
TO DISPLAY
SECTION
2 
3 
1 
5
9
L-CH
3
3 
3 
3 
2
2 
2 
2 
1
1 
1 
1 
L-CH
R-CH
ANALOG  IN  R-CH
ANALOG  IN  L-CH
R-CH
17
23
22
21
20
19
18
16
15
14
13
12
11
10
9
8
7
6
5
4
3
MCK 
GNDX
XO
XI
VDDX
VDDR
OUTR(+)
OUTR(–)
OUTL(–)
OUTL(+)
GNDD
RESET 
L-CH  IN
R-CH  IN
R-CH  VREF
L-CH  VREF
GNDA
NFR2(–) 
NFL1(+) 
NFL2(–) 
NFR1(+) 
TEST
24
2
1
VDDL
VDA 
12
11
2
8
6
3
LI
HQ
HI
HS
VDD 
VSS
LQ
HB
HI
HQ
LI
HB
LQ
VSS 
VDD
HS
HI
HQ
LI
HB
LQ
VSS
VDD 
HS
1 2 3 4
HI
LI
VSS 
LQ
HS
HQ
HB
VDD
L-CH_IN
R-CH_IN
12
11
10
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
R-CH_OUT(+)
R-CH_OUT(–)
L-CH_OUT(–)
L-CH_OUT(+)
8 7 6 5
8 7 6 5
1 2 3 4
1 2 3 4
1 2 3 4
8 7 6 5
8 7 6 5
OFFSET
OUTPUT
R-CH 
+11V
+11V
+5V
QA101
SLA5001 
QA100
SLA5001 
DA128 
DA127 
DA129 
DA126 
ICA110
QUAD 2 INPUT AND GATE
TC74AC8T
ICA104
ICA103
ICA102
ICA101~ICA104
GATE DRIVER
HIP2100 
ICA105
VOLTAGE REGULATOR
NJM78M9D
CXA100
11.2896MHz 
ICA100
1 BIT AD
CONVERTER
IX2815AF 
VRA101
10K(B) 
VRA100
10K(B) 
NC
ICA101
OFFSET
OUTPUT
L-CH 
OUTPUT FET 
OUTPUT FET 
ICA105
3 
3 
3 
3 
3 
3 
1 
1 
1 
1 
1 
1 
Q802
D823
D801-D804 
–11V
–B1 
SP_RELAY
FAN_L 
M97
FAN
MOTOR
CNPV97
FAN_L
QV87
QV91
QV90
QV88
QV93
QV94
ZD803 
ZD802 
VF2 
VF1 
–VP 
+B11
D805-D808 
+B_CONT 
SP_RELAY
M 
ICV99
KIA4558P
OPE AMP.
ICV98
KIA4558P
OPE AMP.
RLV99   RELAY 
RL800
RELAY 
AN78L05
VOLTAGE
REGULATOR 
VOLTAGE  REGULATOR 
VOLTAGE  REGULATOR 
VOLTAGE REGULATOR 
VOLTAGE REGULATOR 
VOLTAGE REGULATOR 
VOLTAGE REGULATOR 
VOLTAGE REGULATOR 
VOLTAGE REGULATOR 
Q800
D800
F803
T2.5A L 250V
F802
T5A L 250V
F801
T5A L 250V
D900-D903 
T901
MAIN POWER
TRANSFORMER
RELAY
DRIVER
POWER 
RL900
RELAY 
T900
SUB POWER
TRANSFORMER
SO900
AC POWER
INPUT
SOCKET
AC 230V,
     50Hz
SOV99
SPEAKER
TERMINALS
MAIN
SECTION
DISPLAY
SECTION
DISPLAY,MAIN
SECTION
+B11
+11V
+B1 
PROTECT 
DISPLAY
SECTION 
POWER 
+5V(A)
+B9 
+5V(D)
+B10
+5R6V(USWD) 
+B3 
PROTECT
MOTOR+12V
+B11
MOTOR+12V 
+B11
+B7 
+B7 
–B2 
–B2 
–12V(A) 
–B2 
+5V(SWD)
+B5 
MD+6V(A)
+B8 
CD+7R2V 
+B4 
+12V(A) 
+B7 
MD+5V(D)
+B6 
IC804
KIA7805AP
IC803
KIA7812AP
IC802
KIA7806AP
IC801
KIA7812AP
IC806
KIA7805AP
IC805
AN78L05
FAN  CONTROL 
IC800
Q900
7 
5 
8 
3 6 
2 
1 
4 
2 
1 
3 
1 
2 
3 
8 
6 
7 
5 
4 
L900
LINE FILTER
T.F.
3 
1 
– 5V
–16.3V
+5V 
DISPLAY
SECTION
DISPLAY
SECTION
QA102
QA103
L-CH 
R-CH 
2 
1 
3 
AC POWER
SUPPLY
CORD
AC 230V,
      50Hz
ICV98
ICV99
Display
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