Sharp PG-B10S Anleitung Seite 40

PG-B10S
Checking the lamp
light-up
Is the lamp tight in the
socket?
YES
Is there DC350-400V
voltage applied between
the P712 pins?
YES
Are the P741 and P742
harnesses tightly
connected on both the
power and ballast units?
Or are the harnesses in
good condition?
YES
Are there 3V (High level)
voltage and over-1V
voltage applied at pins (6)
and (3), respectively, of
P741 on the power unit?
YES
Is high-pressure noise
heard?
YES
Replace the lamp.
NO
Insert the lamp tightly in
the socket.
NO
Go to "Checking the
power unit".
NO
Insert the P741 and P742
harnesses tightly. Or
replace the harnesses as
required.
NO
Go to "Checking the
microprocessor circuits".
NO
Replace the ballast.
40