9-5
A0CF0BLINV
Inverter Block Diagram
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
INVER
TER CB
A
CN1001
PR
O
TECT3
10
BA
CKLIGHT
-ADJ
12
VCOM
2
BA
CKLIGHT
-SW
11
TO SYSTEM
CONTROL
BLOCK
DIAGRAM
(CN405)
T1950
10
11
14
15
2
3
4
5
7
8
1
4
3
2
Q1970
Q1971
IC1930
1
4
3
2
IC1931
Q1931
TO POWER
SUPPLY
BLOCK
DIAGRAM
(CN600)
HO
T
COLD
HOT CIRCUIT. BE CAREFUL.
Q1972
SWITCHING
Q1930
CN1900
Q1932
IC1000
(PWM CONTROL)
BA
CK
LIGHT
1
2
1
2
1
2
CN1100
CN1150
CN1200
BA
CK
LIGHT
BA
CK
LIGHT
T1100
Q1551,
Q1552,
Q1553
Q1003
Q1600
Q1065
Q1115
Q1165
Q1500
Q1801,Q1802,
Q1803,Q1804
Q1800,Q1815
Q1004,
Q1005
Q1550
T1150
4
1
3
7
8
6
5
2
T1200
DRIVE
Q1501,
Q1502,
Q1503
DRIVE
OSC
PWM
CONTR
OL
LOGIC
VCC
DCT
CURRENT
CONTR
OL
SWITCH
CURRENT
CONTR
OL
SWITCH
OV
E
R
V
O
LT
A
G
E
PR
O
T
ECT
OR
OV
E
R
V
O
LT
A
G
E
PR
O
T
ECT
OR
OV
E
R
V
O
LT
A
G
E
PR
O
T
ECT
OR
Q1225
OV
E
R
V
O
LT
A
G
E
PR
O
T
ECT
OR
11
8
5
6
15
3
4
12
16
2
1
SW+16V
SW
SW+16V
LCD MODULE
ASSEMBL
Y
T1050
4
1
3
7
8
6
5
2
4
1
3
7
8
6
5
2
4
1
3
7
8
6
5
2
BA
CK
LIGHT
1
2
CN1050
AC
L
2
HO
T
-GND
1
INV+16V
10
CN1003
VCOM
Summary of Contents for LT850-M32 - SERVICE
Page 13: ...4 2 A0CF0DC_rev 2 Rear Cabinet 1 Stand Assembly S 4 S 4 S 2 S 3 S 2 S 2 S 2 S 1 S 5 Fig D1...
Page 36: ...10 4 A0CF0SCP2 Power Supply 2 Schematic Diagram...
Page 37: ...10 5 A0CF0SCP3 Power Supply 3 Schematic Diagram...
Page 39: ...10 7 A0CF0SCF Function IR SENSOR Junction Schematic Diagram...
