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Sharp SM-SX1 Service Manual page 23

1-bit amplifier
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9
LED905
7
NC
GL9BC030
6
NC
3
2
4
5
8
10
1
R915
68
R916
68
C900
0.1
IC904
BU2114F
LED DRIVER
18
VDD
SIN
1
17
Q1
2
CK
Q2
LATCH
3
16
Q3
4
15
SOUT
NC
14
Q4
EN
5
NC
13
Q5
6
NC
RST
GND
12
7
Q6
GND
8
11
Q7
GND
10
Q8
9
ENT PWB-A5
COMPUTER PWB-A8
R917
1K
+B
R914
10K
+B
IC908
PST9119
RESET
+B
+B
5
4
3
2 1
+B
7
LED906
GL9BC030
3
2
4
5
8
10
1
10 11 12 13 14 15 16 17 18
9
8
7
6
5
4
3
2
1
44
43
42
41
40
39
38
37
36
R918 1K
1
DATA_IN
R919 1K
IC907
DATA_OUT
2
R920 1K
IX2845AF
3
IC-CLK
R921
SYSTEM
4
1K
5
KEY
MICROCOMPUTER
6
VOL DIS
R922
7
KEYA
1K
8
KEYB
23
CL_CONT
9
KEYC
10
11
12 13 14 15 16 17 18 19 20 21 22
+B
R923
10K
C901
D900
10/16
TP56
DAN202K
X900
8.0MHz
+B
+B
C902
L900
C903
0.1
22µH
10/16
+B
8
Figure 23 SCHEMATIC DIAGRAM (10/10)
9
LED907
7
NC
GL9BC030
6
NC
3
2
4
5
8
10
10 11 12 13 14 15 16 17 18
9
8
7
6
5
4
3
8 7 6 5 4 3 2 1
8
7
6
5
4
3
8
7
35
34
R955
1K
AUX3
33
32
MUTE
R956
1K
DIG_A
31
R957
1K
DIG_B
30
R958
1K
IC_STB
29
P_IN
28
R951
1K
PROTECT
27
R952
1K
DDATA
26
R953
1K
DLATCH
25
R954
1K
DCLK
24
23
NC
9
10
– 23 –
9
7
NC
6
NC
1
C909
47/10
2
1
BI901
CNS901
2
1
6
5
4
3
2
1
CNP901
+B
TP24
TP25
LMUTE
11
TP26
10
YOBI OUT
TP27
R973
9
P_I
1K
TP28
8
PROTECT
TP29
7
POWER
TP30
R974
6
DIG/ANA
1K
TP31
5
IC_RESET
TP32
4
LED GND
+B
TP33
3
+5V
TP34
2
GND
TP35
1
TP36
MUTE
1
L901
TP37
DLATCH
2
L902
TP38
DCLK
3
L903
TP39
4
DDATA
TP40
5
DIG_C
+B
C905
220P
C906
220P
C907
220P
+B
11
SM-SX1/SX1W
11
11
10
10
9
9
8
8
7
7
6
6
CNS902
5
5
TO
4
4
MAIN PWB
P14 1-G
3
3
2
2
1
1
CNS903
TO
DIGITAL PWB
P16 2-H
12

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