73
 Troubleshooting 
 • When the interior portion has become overheated, for safety 
purposes, the power source is automatically turned off, and the indicator lamps 
may also be turned off. In such a case, press the “ 
O ” (off) side of the power 
switch, and wait at least 45 minutes. After the projector has suffi ciently cooled 
down, please make confi rmation of the attachment state of the lamp and lamp 
cover, and then turn the power on again. 
 NOTE 
 
SHUTTER
  
 Description 
Blinking
In Red
or
Lighting
In Red
Blinking
In Red
Turned
off
T
urned
off
Turned
off
 The cooling fan is not operating.
 Please turn the power off, and allow the projector to 
cool down at least 20 minutes. After the projector has 
suffi ciently cooled down, please make confi rmation that 
no foreign matter has become caught in the fan, etc., 
and then turn the power on again.
If the same indication is displayed after the remedy, 
please contact your dealer or service company.
Blinking
In Red
or
Lighting
In Red
Lighting
In Red
Turned
off
T
urned
off
Turned
off
 The internal temperature is rising too much.
 
Turn the projector off ( 
  
 20) soon, and allow it to cool 
down for 20 minutes or more. 
After cooling, perform the 
following check.
- Are there any obstacles to ventilation around the 
projector? 
- Does the temperature around the projector exceed the 
limit specifi ed? ( 
  
77 )
When this message is displayed without the obstacles 
mentioned above, replacement of the fi lter unit is 
required. Replace the fi lter unit soon according to the 
procedure directed in the paragraph "Filter unit" in the 
chapter "Maintenance" ( 
  
69 ). Remember resetting the 
FIL
TER TIME is needed soon after replacement of the 
fi lter unit.
Lighting
In 
Green
Simultaneous
blinking in Red
Turned
off
T
urned
off
 Replacement of the fi lter unit is required.
 
The value of the timer of the FILTER TIME reached the 
preset value of the FILTER MESSAGE on the SERVICE 
menu under the OPTION menu ( 
  
50 ).  Replace the 
fi lter unit soon according to the procedure directed in the 
paragraph "Filter unit" in the chapter "Maintenance" ( 
  
69 ). 
Remember resetting the FILTER TIME is needed soon 
after replacement of the fi lter unit.
Lighting
In 
Green
Alternative
blinking in Red
Turned
off
T
urned
off
 There is a possibility that the interior portion has 
become overcooled.
 Please use the unit within the usage temperature 
parameters (5°C to 35°C). After the treatment, reset the 
power to on.
Blinking 
in 
Green 
for 
approx. 
3 
seconds
T
urned
off
Turned
off
Turned
off
Turned
off
 At least 1 “Power ON” schedule is saved to the 
projector.
 (Please refer to the 
User’s Manual - Network Guide: 
Schedule Settings for more information.)