10-4
A17FYBLINV
INVER
TER CB
A
CN1001
PR
O
TECT3
10
BA
CKLIGHT
-ADJ
12
VCOM
2
BA
CKLIGHT
-SW
11
TO
SYSTEM
CONTROL
BLOCK
DIAGRAM
(CN650)
T1950
10
11
14
15
2
3
4
5
7
8
1
4
3
2
Q1970
(FEED BACK)
(ISOLATOR)
Q1971
IC1930
1
4
3
2
IC1931
Q1931
TO
POWER
SUPPLY
BLOCK
DIAGRAM
(CN600)
HO
T
COLD
HOT CIRCUIT. BE CAREFUL.
Q1972
SWITCHING
Q1930
CN1901
Q1932
LCD MODULE
ASSEMBL
Y
+B
1
INV+20V
4
HO
T
-GND
3
10
CN1003
VCOM
IC1200
(PWM CONTROL)
BA
CK
LIGHT
1
2
1
2
CN1101
CN1102
BA
CK
LIGHT
T1101
Q1201
Q1300
Q1303
Q1700
T1102
OUTPUT
PR
O
TECT
STB
DUTY
LOGIC
PWM
FEED
BA
CK
SWITCHING
Q1701
SWITCHING
Q1702
SWITCHING
Q1703
SWITCHING
24
21
13
18
12
16
7
17
4
2
Q1202
Q1301
T1100
BA
CK
LIGHT
1
2
CN1100
4
1
3
7
6
8
5
2
4
1
3
7
6
8
5
2
4
1
3
7
6
8
5
2
SW+10.5V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
4. Inverter Block Diagram (main Inverter CBA)
When you conduct on a component level repair for the Inverter CBA for any models within this service manual,
make sure to refer the right Block Diagrams, Schematic Diagrams/CBA and Parts List.
For the main CBA, the last digit of the board number, which is engraved on every board, should be a number(e.g. BA17F4F0103 2).
For the sub CBA, the last digit of the board number, which is engraved on every board, should be an alphabet(e.g. BA17F4F0103 Z
).
