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2. Troubleshooting guide
2.1. No raster
Turn-on power supply, chec
if the red indicator is light in
the STANDBY?
Check if 5VSTB of X802 9#
on main board is normal?
Check STANDBY circuit o
ower supply board
Press POWER button on the
unit or sensor control an
check the indicator.
Check if the PIN11 of X802 o
main board is high-level?
Check high voltage o
ower board
Check high voltage on
ower board
yes
no
no
red
blue
Check POWE
ON/OFF control circui
on the main board
no
yes
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