Service manual

7-6
Inverter Block Diagram
A8AF1BLINV
BACK LIGHT
1
2
1
2
1
2
1
2
1
2
INVERTER CBA
LCD MODULE ASSEMBLY
CN1050 CN1100 CN1150 CN1200 CN1250
IS
VS
OVP
CL1000A
PROTECT31 BACKLIGHT-ADJ
3
BACKLIGHT-SW
2
IC1500 (COMPARATOR) IC1550 (COMPARATOR)
Q1020
2
1
3
13 12
6 5
14
7
IC1001 (INVERTER CONTROL)
2
1
3
13 12
6 5
14
7
9
10
8
TO SYSTEM CONTROL BLOCK DIAGRAM (CL1000B)
VCC VCC
4 4
Q1002
T1050
Q1100, Q1101 Q1102, Q1103
3
1
4
7 8 6 5
2
T1100
3
1
4
7 8 6 5
2
T1150
3
1
4
7 8 6 5
2
T1200
T1951
TO POWER SUPPLY BLOCK DIAGRAM
ACL HOT-GND
3
1
4
7 8 6 5
2
T1250
3
1
4
7 8 6 5
2
DRIVE DRIVE
DRIVE
INVERTER
CONTROL
10 11 14 15
2 3 4 5 7 8
4 5
23
2
14
3 2
Q1970
Q1971
IC1930
14
3 2
IC1931
Q1931
13
11 19
DRIVE
LOGICLOGIC
DRIVE DRIVE
BACK LIGHT BACK LIGHT BACK LIGHT BACK LIGHT
HOT
COLD
HOT CIRCUIT. BE CAREFUL.
12 16
Q1972
SWITCHING
Q1930
Q1932