109
Message Description
The horizontal or vertical frequency of the input signal is 
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Please conrm the specs for your projector or the signal 
source specs.
An improper signal is input. 
Please conrm the specs for your projector or the signal 
source specs.
The internal temperature is rising.
Please turn the power off, and allow the projector to cool 
down at least 20 minutes. After having conrmed the 
following items, please turn the power ON again. 
 • Is there blockage of the air passage aperture? 
 • Is the air lter dirty? 
 • Does the peripheral temperature exceed 40°C?
 •  Is the projector used at an altitude of about 1600 m or 
higher? 
If the projector is used at an altitude of about 1600 m 
or higher, set ALTITUDE of the SERVICE item in the OPTION 
menu to HIGH
 (
61). If the projector is used with a wrong 
setting, it may cause damage to the projector itself or the 
parts inside.
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Please immediately turn the power off, and clean or change 
the air lter referring to the “Cleaning and replacing the 
air lter” section of this manual. After you have cleaned or 
changed the air lter, please be sure to reset the lter time 
(
58, 106).
The button operation is not available.
Troubleshooting
Related messages (continued)