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Sharp SM-SX1 Service Manual page 21

1-bit amplifier
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IC102
74HC153AF
INVERTER
R126
330
9
2Y
GND
8
10
NC
NC
2CO
1Y
7
6
11
NC
2C1
1CO
2C2
1C1
5
12
2C3
1C2
4
13
14
A
1C3
3
2G
15
B
2
1G
1
16
VDD
L120
8
7
9
6
5
10
4
11
3
12
2
13
1
14
L121
TP21
4
SM-SX1
ONLY
TP22
3
TP23
TP24
2
TP25
TP26
1
SOC101
7 6 5 4 3 2 1
CNP103
7
C120
IC103
0.1
TC74HCU04F
AMP.
R122
C121
56K
0.1
R123
2.7K
R124
220K
SOC101
1BIT TERMINAL
1
SACD DINR
12
14 15
2
SACD DINL
8
3
GND
4
64fs IN
11
GND(for DINR)
5
7
13
GND(for DINL)
6
10
GND
7
GND(for 64fs)
8
6
µ-COM CLK
9
9
µ-COM DATA_OUT
10
µ-COM STB
11
5
µ-COM GND
12
µ-COM DATA_IN
13
µ-COM DATA_IN
TP32
12
µ-COM DATA_OUT
TP33
11
µ-COM CLK
TP34
10
µ-COM STB
9
TP35
µ-COM GND
NC
8
TP37
5V(µ-COM)
7
TP38
A
6
TP39
B
5
AUX RLY1(SACD)
TP40
4
TP41
AUX RLY2(LINE1)
3
AUX RLY3(LINE2)
TP42
2
TP43
SP RLY
1
BI101
8
Figure 21 SCHEMATIC DIAGRAM (8/10)
R204
Q201
2.2K
2SC2412KR
Q202
2SA1037KR
R203
10K
R205
R202
R201
100K
10K
4.7K
+B
+B
+B
Q204
2SC2412KR
R206
1K
R208
1K
R209
R207
2.7K
100K
+B
+B
+B
7 6 5 4 3 2 1
7
6 5 4 3 2 1
12
11
10
9
8
7
CNP904
6
TO
5
MICROCOMPUTER
PWB
4
P22 5-E
3
2
1
CNS704
9
10
– 21 –
FROM
1BIT AMP. PWB
P19 12-F
A
B
D
C
RLY201
2
3
4
5
D203
DN202K
6
1
4
5
3
2
RLY202
6
1
D204
DAN202K
R213
4.7K
R210
15K
R212
15K
R211
D201
10K
DAN202K
Q206
2SC2412KR
C202
33/35
Q205
2SC2412KR
SPEAKER RELAY PWB-A3
BI201
TO
INPUT SOURCE PWB
CNS103
11
SM-SX1/SX1W
SPEAKER
TERMINAL
NC
TP68
R-
TP69
NC
R+
SP OUT R-CH
TP70
NC
L-
NC
TP71
L+
SP OUT L-CH
R214
R215
15K
15K
D202
R216
DAN202K
10K
Q208
2SC2412KR
C203
33/35
Q207
2SC2412KR
12

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