FUNAI LT6-M22BB - Page 25

7-6
A8C72BLINV
Inverter Block Diagram
IC401 (PWM CONTROL)
BACK LIGHT
1
2
1
2
1
2
CN401 CN402 CN403
BACK LIGHT BACK LIGHT
T401
Q405
Q412 Q407
Q421
Q420
Q422 Q427 Q414 Q419 Q403 Q409
Q410, Q413
Q401,Q415Q417,Q429
Q423, Q425
F401 3.15A
Q404, Q406
Q416 Q424
CURRENT CONTROL SWITCH
3
1
4
7 8 6 5
2
T402
3
1
4
7 8 6 5
2
T403
3
1
4
7 8 6 5
2
DRIVE DRIVE
SWITCHING SWITCHING
OSC
PWM CONTROL LOGIC
VCC
CURRENT CONTROL SWITCH CURRENT CONTROL SWITCH
OVER VOLTAGE PROTECTOR OVER VOLTAGE PROTECTOR OVER VOLTAGE PROTECTOR OVER VOLTAGE PROTECTOR OVER VOLTAGE PROTECTOR OVER VOLTAGE PROTECTOR
8
11
5 6
15
3
12 16
2 1
SW+22V
SW
SW+16V
Q428
CN404B
TO SYSTEM CONTROL BLOCK DIAGRAM (CN105A)
CN404B
INVERTER CBA
LCD MODULE ASSEMBLY
TO POWER SUPPLY BLOCK DIAGRAM (CN105A)
JUNCTION CBA
CL404 CN404A CL404 CN404A
11
BACKLIGHT-SW
12
BACKLIGHT-ADJ
10PROTECT3
11
11
BACKLIGHT-SW
12
12
BACKLIGHT-ADJ
10
10
PROTECT3
INV+22V
2,5,6
2,5,6
INV+22V
2,5,6