Canon LV 7490 - Manual (Page 60)

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The WARNING indicator shows the state of the function which protects the projector. Check the state
of the WARNING indicator and the POWER indicator to take proper maintenance.
WARNING indicator
The projector is shut down and the
WARNING indicator is blinking red.
When the temperature inside the projector
reaches a certain level, the projector will be
automatically shut down to protect the inside of
the projector. The POWER indicator is blinking
while the projector is being cooled down. When
the projector has cooled down enough (to its
normal operating temperature), it can be turned
on again by pressing the POWER button.
The projector is shut down and the
WARNING indicator lights red.
When the projector detects an abnormal
condition, it is automatically shut down to protect
the inside of the projector and the WARNING
indicator lights red. In this case, unplug the
AC power cord and reconnect it, and then turn
the projector on once again to verify operation.
If the projector cannot be turned on and the
WARNING indicator still lights red, unplug the
AC power cord and contact the service center.
WARNING
DO NOT LEAVE THE PROjECTOR WITH
THE AC POWER CORD CONNECTED
UNDER AN ABNORMAL CONDITION.
IT MAY RESULT IN FIRE OR ELECTRIC
SHOCK.
Top Control
Top Control
 Note:
The WARNING indicator continues to blink even
after the temperature inside the projector returns
to normal. When the projector is turned on again,
the WARNING indicator stops blinking.
Then check the matters below:
– Did you provide appropriate space for the
projector to be ventilated? Check the installing
condition to see if the air vents of the projector
are not blocked.
– Has the projector been installed near an Air-
Conditioning/ Heating Duct or Vent? Move the
installation of the projector away from the duct
or vent.
– Is the filter clean? Replace the filters with new
ones.
WARNING
blinking red
Maintenance and Cleaning
WARNING
lights red