Trouble Shooting Table - Sharp XV-Z90E Service Manual

Checking of Basic Operation
Does the POWER LED light up or
flicker in red or green?
Yes
Does the set operate by the set's
key or the remote controller's
power key?
Yes
Does the cooling fan rotate and
does the lamp light up?
Yes
Is the user menu displayed?
Yes
Does the 15pin D-Sub input act
normally?
Yes
Is the component input acting
normally?
Yes
Does the video input operate
normally?
Yes
End

TROUBLE SHOOTING TABLE

No
Go to "Checking of Power Unit".
No
Check the peripheral circuits of IC8001
and IC2002.
No
Go to "Checking of Lamp Lighting-up"
No
Check the formatter circuit and
its periphery.
Check of IC6004 (AD) or
No
IC3104 and check of analog
RGB input
No
Is there input signal at pins
(8), (17) and (23) of IC8013?
Go to "Checking of Video
No
Input". Is the input signal of
IC3105 coming?
Check IC3102 and its
peripheral circuit.
No
No
Yes
21
XV-Z90E
XV-Z91E
Check IC3104 and its
peripheral circuit.
Check IC3105 and its
peripheral circuit.