BenQ PE8700 Service Manual page 49

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C h e c k p rim a r y
c ir c u it.
F u s e B r o k e n ?
Y e s
C h e c k Q 6 0 1 d a m a g e s ?
Y e s
P in D & P in S o f Q 6 0 1
a re s h o rte d . R e p la c e
n e w
R 6 1 2 ,Q 6 0 1 ,R 6 1 1 ,Z D
6 0 2 ,I C 6 0 1 a n d F u s e .
C h e c k I C 6 0 1 .
O p e n R 6 1 2 a n d in je c t
1 2 V to P in 7 o f
I C 6 0 1 .
I s th e P W M w a v e f o r m o f
P in 6 o f I C 6 0 1 is c o r r e c t ?
Y e s
R e p la c e Z D 6 0 1 a n d
I C 6 0 3 .
P ro c e e d to " C h e c k
N o
IC 6 0 1 " .
N o C h e c k B D 6 5 1 d a m a g e s ?
Y e s
I n s id e d io d e s o f
B D 6 0 1 a re s h o rte d .
R e p la c e n e w b rid g e
d io d e .
N o R e p la c e I C 6 0 1 .
P r o c e e d to " C h e c k
N o
I C 6 0 1 " .
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