BenQ Q7T3-FP737S Service Manual page 95

Q7T3(AUO Panel) LCD Monitor Service Guide
4. Power Board
Y
R e place Q 7 6 1
N
Plu g CN 7 0 1 a g a in or
ch e ck i ng I/ F BD
N
Plu g CN 6 0 1 a g a in or
ch e ck i ng PW BD
N
Insert t h e m a g a in
Bac k l i g h t didn ' t s h i ne
Y
IC7 5 1 PIN 9 IS 15 V ?
N
P W M e x i sted ?
( B L T _ A D J )
Y
Turn on lev e l ex i sted?
( B L T _ O N)
Y
C h e c k CN 7 5 2 , CN 7 5 3
was plu g e d properly ?
Y
R e place IC7 5 1 , Q 7 5 1
IC7 0 2 , D 7 0 1 or ch e ck
L E D sh i ned?
N
3.3 V e x i sted ?
N
Y
C h e c k IC 7 0 1 O K ?
N
Y
Ch e ck i ng F 6 0 1
Brok e ?
N
Y
Ch e ck IC6 0 1 V c c
e x i sted ?
N
R e place IC 6 0 2 ,
I/ F BD
Trouble Shooting
Y
IS I/ F board connected?
Y
R e place new fuse
R e place IC7 0 1
R e place new fuse
R e place
IC 6 0 1 , Q 6 0 2 , Q 6 0 3
R 6 0 2
N
R e place new fuse
3