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Power can not be turned on
voltage input at
pins (1)(3)(5)(7) of E800
on the PWB assembly
Main at standby
What is the state of
TEMP indicator D302?
What is the state of
LAMP indicator D303?
PWB assembly Main
PWB assembly Main
ViewSonic Corporation
Are
NO
mode?
(1): +0V
(3): +17V
YES
(5): +6.6V
(7): +4.1V
Blinks
Not light
Blinks
Not light
Short (0 )
Disconnect
TSW form Power unit
(circuit). And check
TSW short or
open?
Short
Power unit (circuit)
Jump to * on the page 13
Is the LAMP DOOR
set?
OK
Unplug
power cord and
disconnect cable CNLC,
then measure resistance
between pins (1)
and (2) of
CNLC.
Open
PWB assembly Limit SW
12
Open
TSW
Fuse on the
Power unit (circuit)
NG
Set the LAMP DOOR
Confidential - Do Not Copy
PJ400-1
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