Sharp LC-20AV7U Service Manual - Page 37

Main 1/5 Schematic Diagram

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Main 1/5 Schematic Diagram NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD. Comparison Chart of Models and Marks Model Mark LC-20AV7U A LC-20SH7U B MAIN 1/5 Ref No. Position ICS IC1202 B-2 IC1205 E-2 TRANSISTORS Q1001 B-1 Q1002 B-1 Q1003 C-1 Q1004 D-1 Q1005 D-1 Q1006 D-1 Q1007 E-1 CONNECTORS CN1201 A-4 CN1202 F-4 CN1301 A-2 CN1302 A-1 CN1303 F-1 VOLTAGE CHART CN1201 Pin No. Voltage 1 1.2 2 1.0 3 0.8 4 0.7 5 1.0 6 1.4 7 0 8 1.2 9 0 10 1.2 11 0.7 12 0.5 13 0.7 14 1.3 15 1.1 16 0 17 1.2 18 0.9 19 0.7 20 0.7 21 1.3 22 1.3 23 0 24 1.2 25 1.0 26 0.9 27 0.8 28 1.0 29 1.4 30 0 31 0 32 1.7 33 0.3 34 3.4 35 1.7 CN1202 Pin No. Voltage 1 0 2 24.4 3 24.4 4 0 5 3.3 6 3.3 7 0 8 10.8 9 0 10 -6.2 11 0 12 1.2 13 0.7 14 0.5 15 0.7 16 1.3 17 1.1 18 0 19 1.2 20 0.9 21 0.7 22 0.8 23 0 24 0 25 0 26 0 27 0 28 2.1 29 0 30 1.3 31 1.3 32 0 33 0 9-3 A7144SCM1

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9-3
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.
A7144SCM1
Main 1/5 Schematic Diagram
MAIN 1/5
Ref No.
Position
IC1202
B-2
IC1205
E-2
Q1001
B-1
Q1002
B-1
Q1003
C-1
Q1004
D-1
Q1005
D-1
Q1006
D-1
Q1007
E-1
CN1201
A-4
CN1202
F-4
CN1301
A-2
CN1302
A-1
CN1303
F-1
CONNECTORS
ICS
TRANSISTORS
CN1201
CN1202
1
1.2
1
0
2
1.0
2
24.4
3
0.8
3
24.4
4
0.7
4
0
5
1.0
5
3.3
6
1.4
6
3.3
7
0
7
0
8
1.2
8
10.8
9
0
9
0
10
1.2
10
-6.2
11
0.7
11
0
12
0.5
12
1.2
13
0.7
13
0.7
14
1.3
14
0.5
15
1.1
15
0.7
16
0
16
1.3
17
1.2
17
1.1
18
0.9
18
0
19
0.7
19
1.2
20
0.7
20
0.9
21
1.3
21
0.7
22
1.3
22
0.8
23
0
23
0
24
1.2
24
0
25
1.0
25
0
26
0.9
26
0
27
0.8
27
0
28
1.0
28
2.1
29
1.4
29
0
30
0
30
1.3
31
0
31
1.3
32
1.7
32
0
33
0.3
33
0
34
3.4
35
1.7
Voltage
VOLTAGE
CHART
Pin No.
Voltage
Pin No.
Comparison Chart of
Models and Marks
Model
Mark
LC-20AV7U
LC-20SH7U
A
B