ViewSonic PJ452 - LCD XGA Projector-4.9LBS Service Manual page 41

(2) Take the Power Sheet off, and then unscrew a screw with a plastic washer.
In removing POWER BOARD(CIRCUIT) from the bottom case assembly, use flat screw driver or fine tool to
unclip the holder with the arrow shown below.
POWER UNIT(CIRCUIT)
4. Cautions When Removing The Power Unit (BALLAST)
When removing the cable (CNBAR) connected to Power Unit (BALLAST), there is danger of damaging the
small PWB connecting cables.
ViewSonic Corporation
POWER UNIT
(CIRCUIT)
CNBAR
Disconnect the CNBAR from connector CN2,
while pressing the sub-board
(to prevent the stress on the sub-board).
Screw
Power Sheet
Clip
Power Unit (BALLAST)
38
Confidential - Do Not Copy
PJ452