Sharp 1-BIT AMPLIFIER SM-SX1 Service Manual page 18

SM-SX1/SX1W
CNWAM1
ANALOG IN R-CH
A
1
2
TO MAIN PWB
P15 8-A
3
4
CNWAM1A
1
B
2
3
TO MAIN PWB
P14 5-A
4
5
6
C
CNWAM2A
D
E
F
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 32.
1
All manuals and user guides at all-guides.com
1BIT AMP.PWB-B
CA86
RA70
CNPA2
2.2
20K
R 1
1
RA86
100K
AGND
2 2
AGND_AD
CNWAM1B
ANALOG IN L-CH CNPA1
AGND
1 1
AGND_AD
L
2 2
RA85
RA71
CA85
CNWAM1C
100K
20K
2.2
CNPA4
DIGITAL IN R-CH
R+ 1
1
ZDA81B
ZDA81A
HZ7A2
HZ7A2
2
2 AGND
ZDA82B
ZDA82A
HZ7A2
HZ7A2
R- 3
3
RA84
CNWAM2B
100K
DIGITAL IN L-CH
CNPA3
L- 1
1
ZDA83B
ZDA83A
HZ7A2
HZ7A2
AGND 2
2
ZDA84B
ZDA84A
HZ7A2
HZ7A2
3
3 L+
RA81
CNWAM2C
100K
3
DA2
RA30 RA38
1SS355
1SS355
390
47K
QA2
RA22 2SA1483 RA26
4.7K
-B
5
RA46
1K
DA4
RA32 RA40
1SS355
47K 390
RA24
4.7K
QA4
RA48
2SA1483
1K
-B
DA3
RA31 RA39
1SS355
47K 390
RA23
RA47
4.7K
1K
QA3
2SA1483
-B
DA1
RA29
1SS355
47K
RA37
390
RA21
RA45
4.7K
1K
QA1
2SA1483
2 3
Figure 18 SCHEMATIC DIAGRAM (5/10)
+B
2
RA6
RA8
75K
75K
RA94
6.8K
CA82
RA2
2.2
10K
RA92
RA82
6.8K
100K
AGND_AD
CA84 RA4
10K
2.2
RA83 CA83
RA3
100K 2.2
10K
AGND_AD
RA7
75K
+B
RA1
CA81 2
10K
2.2
-B
4
-B
CA32
+B
HIP2100
+B
DA6 RA34 0.22
47K
-B
1 VDD
GND_SW
RA42 CA24 HB
2
390 0.22
CA36
HO
3
GND_SW 0.22
4.7K
4 HS
QA6
2SA1483
RA50 5
1K
-B
CA34
+B
+B
DA8 RA36
0.22
HIP2100
47K
1SS355
-B
GND_SW
1 VDD
CA26
RA44
HB
2
0.22
390
CA38
HO
RA28 3
GND_SW
0.22
RA52
4.7K
4 HS
1K
QA8
2SA1483
CA35
+B
+B
RA35
DA7
0.22
HIP2100
1SS355 47K
-B
VDD
GND_SW 1
RA43
CA27
2 HB
390
0.22
CA39
HO
3
RA27
GND_SW
0.22
4.7K
4 HS
QA7
2SA1483
RA51
1K
-B
-B
CA33
+B
+B
DA5 RA33 0.22
HIP2100
1SS355 47K
-B
GND_SW 1 VDD
RA41 CA25
HB
2
390
0.22
CA37
3 HO
RA25 GND_SW
0.22
RA49
4.7K
HS
4
1K
QA5
2SA1483
-B
4
– 18 –
ICA1
IX2815AF
7Th ORDER MODULATION
CONVERSION LSI
TEST
13 MCK
DGND_AD
NFR1(+)
14 GNDX
NFR2(-)
15
GNDA
16
AGND_AD
R-CH IN VDDX
17
CA6
10/63
18 R-CH Vref VDDR
CA5
10/63
19 L-CH Vref OUTR(+)
AGND_AD
20 L-CH IN OUTR(-)
RESET GNDD
21
OUTL(-)
22 NFL2(-)
NFL1(+) OUTL(+)
23
RA5
75K +B
CA7
VDA VDDL
24
0.22
RA91
6.8K
AGND_AD
RA93
6.8K
ICA4
6
ICA4~ICA7:FET D
CA28
0.22
LO
8
DA10
-B
-B
RA56
VSS
7 SM1XP2
10
LI
6
HI 5
CA40
RA54 -B
1.0
10
ZDA4
HZU12B3
CA44
GND_SW
1.0
+B
-B
CA46
-B
ICA6
CA30 1.0
RA58
0.22
10
CA42
1.0
LO 8
GND_SW
-B
VSS
7
RA60
LI 10
6
HI 5
+B
SM1XP2
-B
ICA7
CA31
0.22
LO
8 DA13
-B RA59
SM1XP2
VSS
7
10
LI
6
HI
5
CA43
RA57
1.0
10
HZU12B3
CA45
GND_SW
1.0
+B
CA47
ICA5
CA29
1.0
0.22
GND_SW
CA41
LO 8
1.0
RA53
-B
VSS
7
10
LI
6
HI
5
RA55
+B
10
DA9
SM1XP2
5 6
NC 12
11
XO 10
XI 9
+
8
7
C
0
6
5
4
3
2
1
-B
-B
DA12
SM1XP2
-B
HZ
ZDA8
HZU12B3
HZU
DA16
SM1XP2
DA14
DA15
SM1XP2
ZDA7
H
ZDA3
HZU12B3
HZU
DA11
SM1XP2