FUNAI A8C72EP, Руководство по обслуживанию

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7-6
A8C72BLINV
Inverter Block Diagram
IC401 (PWM CONTROL)
BA
CK
LIGHT
1 2 1 2 1 2
CN401 CN402 CN403
BA
CK
LIGHT BA
CK
LIGHT
T401
Q405
Q412 Q407
Q421
Q420
Q422 Q427 Q414 Q419 Q403 Q409
Q410, Q413
Q401,Q415
Q417,Q429
Q423, Q425
F401 3.15A
Q404, Q406
Q416 Q424
CURRENT CONTR
OL
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 CONTR
OL
LOGIC
VCC
CURRENT CONTR
OL
SWITCH CURRENT CONTR
OL
SWITCH
O
VER V
O
LT
A
G
E
PR
O
TECT
OR
O
VER V
O
LT
A
G
E
PR
O
TECT
OR
O
VER V
O
LT
A
G
E
PR
O
TECT
OR
O
VER V
O
LT
A
G
E
PR
O
TECT
OR
O
VER V
O
LT
A
G
E
PR
O
TECT
OR
O
VER V
O
LT
A
G
E
PR
O
TECT
OR
8
11
5
6
15
3
12 16
2 1
SW+22V
SW
SW+16V
Q428
CN404B
TO SYSTEM CONTROL BLOCK DIAGRAM (CN105A)
CN404B
INVER
TER CB
A
LCD MODULE ASSEMBL
Y
T
O
PO
WER
SUPPL
Y
BLOCK DIA
GRAM
(CN105A)
JUNCTION CB
A
CL404
CN404A
CL404
CN404A
11
BA
CKLIGHT
-SW
12
BA
CKLIGHT
-ADJ
10
PR
O
TECT3
11
11
BA
CKLIGHT
-SW
12
12
BA
CKLIGHT
-ADJ
10
10
PR
O
TECT3
INV+22V
2,5,6
2,5,6
INV+22V
2,5,6