Trouble Shooting Table - Sharp PG-M20S Service Anleitung

PG-M20S
PG-M20X
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 RGB input operate
normally?
Yes
Does the video input operate
normally?
Yes
Do the component input/DVI input
operate normally?
Yes
Does the DVI input operate
normally?
Yes
End

TROUBLE SHOOTING TABLE

No
Go to "Checking of Power Unit".
No
Go to "Checking of Sub-microcomputer
and Its Periphery"
No
Go to "Checking of Lamp Lighting-up"
No
Check the formatter circuit and
its periphery.
No
Check IC8013 (AD) and go to
"Checking of RGB Input".
No
Check IC8015 and peripheral
circuit.
No
Is there input signal at pins
(8), (17) and (23) of IC8013?
Go to "Checking of Video
No
Input". Is there input signal at
the emitter of Q8002?
Check IC8015 and its
peripheral circuit.
No
No
Yes
28
Check IC3852 and its
peripheral circuit.
Check IC3852 and its
peripheral circuit.