Hitachi PJ1065 Service Manual page 15

Lamp does not light
Disconnect
flexible connector from
EMD1 connector.
And light on?
YES
PWB ass'y DRIVE
YES
Change the Lamp.
LAMP
Does Lamp light ?
Change the
YES
Power unit
Power unit (Ballast).
(Ballast)
Does Lamp light ?
Power unit (Circuit)
Replace the PWB
NO
ass'y FAN and remove
the PWB ass'y DRIVE.
Does lamp light ?
YES
PWB ass'y FAN
What is the state of
Light
LAMP indicator
during operation ?
Blinks
Is the Lamp cover set ?
NO
YES
Is the Lamp installed
NO
correctly ?
YES
Change the
LIMIT SWITCH
(LAMP/LAMP DOOR).
Does Lamp light ?
NO
Power unit (Circuit)
NO
Not light
Is TEMP indicator
flashing ?
NO
YES
Set the Lamp
One of FANS is broke
cover again
change then one by
one and find out.
NO
Set the Lamp
again
YES
LIMIT SWITCH
(LAMP/LAMP DOOR)
NO
Change the
NO
Power unit (Ballast)
Does Lamp light ?
YES
Power unit Power unit
(Ballast) (Circuit)
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