BenQ SX930 Service Manual page 139

(b)lamp can not turned on
Lamp can not turned on
has lamp wire connect correct?
(Ballast bd between lamp)
Yes
has power wire connect correct?
(power bd between ballast bd)
Yes
has enable wire connect correct?
(main bd to ballast bd)
Yes
A
No
Wire connect certainty
No
Wire connect certainty
No
Wire connect certainty
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