Sharp XV-Z9000U/E Service Anleitung Seite 45

Checking the lamp
light-up
The lamp fails to light up.
Is discharge sound heard
when turning on the power
switch?
NO
Are the cooling fans
running well?
YES
Is a voltage of about DC
340 V applied across the
ballast power circuit
CP1001?
YES
Is a voltage of over 3.5 V
applied at pin (1) of the
ballast power circuit
CP1501?
YES
Check the
microprocessor circuit.
Replace the ballast power
PWB.
YES
Is the lamp or CW line
socket out of position?
Replace the lamp or the
CW.
NO
Check the power circuit
or the fan circuit on the
main circuit.
NO
Check the power circuit.
NO
Replace the ballast power
PWB. Check the
microprocessor circuit.
45
NO
YES Reconnect the sockets
tightly.
XV-Z9000U/E