Sharp SM-SX100 Service Manual page 30

SM-SX100
A
CNWAM1A
ANALOG IN L-CH
1 1
2
2
P29 9 - A
CNWAM1B
CNP108
ANALOG IN R-CH
TO MAIN PWB
3 1
B
4 2
CNWAM1C
DIGITAL IN L-CH
1
1
2
2
3 3
P29 8 - A
CNWAM2B
CNP107
DIGITAL IN R-CH
TO MAIN PWB
4 1
5 2
C
6 3
CNWAM2A CNWAM2C
D
E
F
2.5V
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 26.
1
CA86 RA70
2.2 20K
L
1
RA86
100K
2
AGND
AGND_AD
CNPA2
CNPA1
AGND 1
AGND_AD
RA71
20K
R 2
CA85
RA85
2.2
100K
CA82 RA2
CNPA4
2.2 10K
L+ 1
RA82
100K
2
AGND
AGND_AD
RA4
10K
L–
3
CA84
RA84
100K 2.2
CNPA3 CA83 RA3
2.2 10K
1
R–
RA83
100K
AGND 2
AGND_AD
R+ 3
CA81
RA81
RA1
2.2
100K
10K
QA1~QA8: LEVEL SHIFT
3 4
5V
DA6 RA34 RA42
DA2 RA30 RA38
1SS355 47K 390 1SS355 47K 390
+B
3.2V
3.2V
2.5V
QA2
QA6
2SA1483
2SA1483
RA22
RA26
2.5V
8.2K
8.2K
–27.5V(8Ω) RA46 RA50
–27.5V(8Ω)
–19.7V(4Ω) –19.7V(4Ω) 1K
1K
5
–31.8V(8Ω)
–24V(4Ω)
DA8 RA36
DA4 RA44
RA40
RA32
1SS355 1SS355 47K 390
390
47K
3.2V 3.2V
2.5V
RA24
RA28
8.2K
8.2K
QA8
QA4
2SA1483 2SA1483
RA48 RA52
1K
1K
–27.5V(8Ω)
–19.7V(4Ω)
DA7 RA35 RA43
DA3
RA31 RA39
1SS355 47K 390
1SS355
47K 390
2.5V
3.2V 3.2V
RA23
8.2K
RA27
8.2K
QA3
2SA1483
QA7
2SA1483
RA47 RA51
1K
1K
–27.5V(8Ω)
–27.5V(8Ω)
–19.7V(4Ω)
–19.7V(4Ω)
RA33
DA5 RA41
RA29 RA37
DA1
47K
1SS355 390
47K 390
1SS355
3.2V
3.2V
RA21
8.2K
RA25
–B
8.2K
QA1
2SA1483 QA5
2SA1483
RA49
RA45
1K 1K
–27.5V(8Ω)
–19.7V(4Ω)
–B
–B
2 3
Figure 30 SCHEMATIC DIAGRAM (4/9)
+B
When it is touched with the tester, the relay is activated (oscillation is stopped.).
2
DGND_AD
RA8
75K
AGND_AD
RA94
6.8K
RA92
6.8K
AGND_AD
RA7
RA5
75K
75K
+B
2
RA91
6.8K
AGND_AD
RA93
6.8K
+B
8.1V(8Ω) –14.4V(8Ω)
–22.2V(4Ω) –27.4V(8Ω)
8.5V(4Ω)
–19.6V(4Ω)
CA32 ICA4
–31.8V(8Ω)
0.22
HIP2100
+B –24V(4Ω)
CA28
0.22
–B
1 VDD 8
LO
CA24
2 HB 7
VSS
0.22
3.9V
CA36
3 HO 6
LI
DGND_SW
0.22
6
4 HS 5
HI
5 –0.2V
FET DRIVER
8.1V(8Ω)
8.5V(4Ω)
–27.4V(8Ω)
–19.6V(4Ω)
CA34
CA40
0.22
1.0
ICA6
CA30
0.22 AGND_SW
HIP2100
AGND_SW
VDD
CA26 –B 1 LO 8
0.22
2 HB VSS 7
–B
CA38 3.9V
DGND_SW 3 HO LI 6
0.22
4 HS HI
5
–0.2V
FET DRIVER
–27.5V(8Ω)
–19.7V(4Ω)
CA42
1.0
AGND_SW
–27.4V(8Ω)
8.1V(8Ω)
–19.6V(4Ω)
8.5V(4Ω) CA35
ICA7
0.22
CA31
HIP2100
0.22
CA27
0.22
VDD LO
1 8
AGND_SW
HB VSS
2 7
–B
CA39 3.9V
HO
3 6
DGND_SW LI
0.22
4 HS HI 5
–0.2V
FET DRIVER
8.1V(8Ω)
8.5V(4Ω)
CA43
1.0
ICA5
CA33
AGND_SW
HIP2100
0.22
CA29
AGND_SW
0.22
1 VDD LO 8
CA25
0.22
2 HB VSS
7
3.9V
CA37
HO LI
3 6
DGND_SW
0.22
–B
HS HI
4 5
–B
–0.2V
FET DRIVER
–27.5V(8Ω)
–19.7V(4Ω)
CA41
1.0
–B
AGND_SW
–B
4
– 30 –
0V
13 TEST
MCK
1.5V
14 NFL1(+) GNDX
1.5V
15 NFL2(–)
0V
16 GNDA
2.4V
L-CH IN VDDX
17
CA6
10/16
2.4V
VDDL
18 L-CH Vref
CA5
10/16 2.4V
19 R-CH Vref OUTL(+)
2.4V
R-CH IN OUTL(–)
20
1
4.9V
RESET
21 GNDD
1.5V
OUTR(–)
22 NFR2(–)
1.5V
OUTR(+)
23 NFR1(+)
+B
4.8V
VDA VDDR
24
CA7
ICA1
0.22
IX2815AF
7TH ORDER ∆∑
MODULATION CONVERSION
QA9~QA16: POWER SWITCHING
7
RA54
CA46
–B
10
1.0
AGND_SW
31.8V(8Ω)
24V(4Ω)
RA56 ZDA4
10 HZU12B3
–31.8V(8Ω)
–24V(4Ω)
CA48
QA14
RA58
1.0
IRF530
10
1-BIT AMP
ZDA6 FEEDBACK
HZU12B3 LEVEL
ADJUSTMENT
QA16
IRF530
VRA4
1K(B)
RA60
–B 10
ZDA8
CA44
HZU12B3
1.0
VRA3
1K(B)
QA13
CA49
IRF530
1.0
RA57 ZDA5
AGND_SW
10
HZU12B3
QA15
IRF530
RA59
ZDA7
10
–B HZU12B3
QA9
CA47
IRF530
1.0
RA53
ZDA1
AGND_SW
10
HZU12B3
–B
QA11
CA45
IRF530
1.0
RA55
+B
10
ZDA3
HZU12B3
–B
–27.4V(8Ω)
–19.6V(4Ω)
–B
5
12
0V
11
CXA
11.2896
2.2V
XO 10
1
1.3V
XI 9
CA10 C
0.22 18P
8
5V
5V
7
2.5V CA12
6
0.22
2.5V
5
0V
4
2.5V
3
2.5V
2
5V
1
CA11
0.22
+B
RA102
6.8K
8
VRA2
200(B)
RA62
680
RA68
1.3K
VRA1
200(B)
+B
1-BIT AMP
FEEDBACK
LEVEL
ADJUSTMENT
–B
AGND_
–B
–B
6