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2. Trouble in Power on
Is the
Power LED toggled
between on and
off?
Off
Is the power
cord well
connected?
Yes
Check the
waveform of pin 8
of
-com(U6).
Yes
Is 5VS line
normal(pin 8 of
CON2)?
Yes
Check on Scaler(U9).
On
Refer to No video
or No raster.
Check if the power switch
No
is on position and
Connect the power
cord correctly.
No
Trouble in U7 & Q3
and its ambient circuit.
No
Check the power board
(5VS of CON2).
23
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