6
Troubleshooting
Regarding the indicator lamps (continued)
Indicator Status Description
RedRed
There is a possibility that the interior portion 
has become heated.
Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
sufciently cooled down, please make conrmation of 
the following items, and then turn the power on again.
• Is there blockage of the air passage aperture?
• Is the air lter dirty?
•  Please use the unit within the temperature range.
NORMAL MODE: 0 to 45°C 
ECO MODE: 0 to 50°C 
HIGH ALTITUDE: 0 to 40°C
• Is the setting for ALTITUDE appropriate? 
•  Is the exhaust air (hot/cold) from peripheral  
equipments blowing against the ventilation opening 
of projector?
For details on ALTITUDE, refer to ALTITUDE of 
SERVICE in the OPTION menu. If the projector is 
used with a wrong setting, it may cause damage to 
the projector itself or the parts inside.
Red
Red
Red
Blinking 
alternately
The interior portion is cold.
Please use the unit within the temperature range. 
NORMAL MODE: 0 to 45°C
ECO MODE: 0 to 50°C
HIGH ALTITUDE: 0 to 40°C
After the treatment, restart the projector.
Red
Red
Red
Blinking at the 
same time
It is time to clean the air lter.
Please turn the power off immediately, and clean or 
change the air lter referring to the section Cleaning 
and replacing the air lter. After cleaning or 
changing the air lter, please be sure to reset the 
lter timer.  
After the remedy, restart the projector.