Trouble Shooting Table - Sharp XG-C58X Serviceanleitung

Lamp fails to light-up
Turn on the power switch.
Is discharging sound heard from
lamp?
No
Is the ballast cooling fan running?
Yes
Is DC 380V pin(4) & 20V pin(1)
voltage applied between P901
connetor pins?
Yes
Is LOW LEVEL voltage applied
between pins(1) and (5) of ballast's
P7702 connector.
Yes
Replace the ballast.

TROUBLE SHOOTING TABLE

Yes
Is the lamp out of socket?
Replace the lamp
No
Check the power supply circuits.
No
Check the power supply circuits.
No
Is the P7702 connector
disconnected?
Reconnect it into socket correctly.
Yes
No
No
Yes
35
XG-C58X
XG-C68X
Reconnect the lamp into socket.
Check the microproccessor and its
peripheral circuits.