Sylvania 6615LDF, Руководство по обслуживанию, Страница: 31 / 67

9-6
LCD Backlight Block Diagram
L3150BLLB
BA
CK
LIGHT
CN402
O
V
ER CURRENT
PR
O
T
ECT
OR
Q404
PWM CONT
OR
OL
Q410
BA
CKLIGHT
-ADJ
OV
E
R
V
O
LT
A
G
E
PR
O
T
ECT
OR
Q405
+
Q408 Q407
Q427
BA
CKLIGHT
-SW
Q403
MAIN CB
A
Q406
T
O
SYSTEM CONTR
O
L
BLOCK DIA
GRAM
< LCD
TV SECTION >
T402
1
O
V
ER V
O
LT
A
G
E
PR
O
T
ECT
OR
Q421,Q422
2
BA
CK
LIGHT
CN403
1 2
O
V
ER V
O
LT
A
G
E
PR
O
T
ECT
OR
Q423,Q424
LCD MODULE
T403
SWITCHING
Q411
SWITCHING
Q416
Q409
SWITCHING
Q412
SWITCHING
Q415
Q401
Q428
AL+13V
2
5
1
6
10
9 8 7
3 4 2
5
1
6
10
9 8 7
3 4
TP403