Lamp Fails To Light-Up - Sharp PG-C30XU Service Manual

TROUBLE SHOOTING TABLE
Is the lamp out of socket?
Yes
No
Replace the
Reconnect the
lamp.
lamp into socket.
Replace the ballast.

Lamp fails to light-up

Turn on the power switch. Is
Yes
discharging sound heard from
the lamp?
No
Is the ballast cooling fan
running?
Yes
Is DC 360V voltage applied
between PL connector pins?
Yes
Yes
Is 2V or higher voltage applied
between pins (1) and (2) of
ballast's D connector?
No
Is D connector disconnected?
Yes
Reconnect the
Check the
connector into socket.
microcomputer circuit.
41
(Continued)
No
Check the power circuit.
No
No
PG-C30XU