Service manual

28
PG-M20S
PG-M20X
TROUBLE SHOOTING TABLE
Yes
No
Checking of Basic Operation
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Yes
No
Does the video input operate
normally?
Does the DVI input operate
normally?
Do the component input/DVI input
operate normally?
Does the RGB input operate
normally?
Is the user menu displayed?
Does the cooling fan rotate and
does the lamp light up?
Go to "Checking of Power Unit".
Go to "Checking of Sub-microcomputer
and Its Periphery"
Go to "Checking of Lamp Lighting-up"
Check the formatter circuit and
its periphery.
Check IC8013 (AD) and go to
"Checking of RGB Input".
Is there input signal at pins
(8), (17) and (23) of IC8013?
Check IC8015 and peripheral
circuit.
Go to "Checking of Video
Input". Is there input signal at
the emitter of Q8002?
Check IC8015 and its
peripheral circuit.
No
Check IC3852 and its
peripheral circuit.
No
Check IC3852 and its
peripheral circuit.
Does the POWER LED light up or
flicker in red or green?
End
Does the set operate by the set's
key or the remote controller's
power key?