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TROUBLESHOOTING HINTS
2. Trouble in Power on
Power LED toggled
Check on Scaler(U6).
Trouble in
Power on
Yes
Is the
between on and
off?
Off
Is the power
cord well
connected?
Yes
Check the
waveform of pin 17
of
-com(U4).
Yes
Is VCC5V line
normal(pin 8 of
CON1)?
Yes
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 Scaler(U6)
No
Check the power board
(VCC5V of CON2).
18
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