“Confidential, Do Not Duplicate without written authorization from NEC.”
4-14
TROUBLESHOOTING
Lamp unit
Yes
No
Is a voltage over 100V generated momentarily
(less than one second) between the + and ?
IGN terminals of the igniter after several seconds
after the set has been powered ON?
Caution: Never touch the -HV terminal because
a voltage of 35kV appears at that time.
Replace the lamp power supply.
No
Yes
Is the problem solved when the Lamp House
is replaced?
Is the problem solved when the igniter is replaced?
End of repair service
End of repair service
No
Yes
Check the cabling materials that are relating to
the lamp power supply and the igniter.
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