73
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects
About the phenomenon confused with a machine defect, check and cope with it 
according to the following table.
Phenomenon Cases not involving a machine defect
Reference 
page
Power does not 
come on.
The electrical power cord is not plugged in.
Correctly connect the power cord.
13
The main power source has been interrupted during 
operation such as by a power outage (blackout), etc.
Please disconnect the power plug from the power outlet, 
and allow the projector to cool down at least 10 minutes, 
then turn the power on again.
13, 16
Either there is no lamp and/or lamp cover, or either 
of these has not been properly xed.
Please turn the power off and disconnect the power plug from 
the power outlet, and allow the projector to cool down at least 
45 minutes. After the projector has sufciently cooled down, 
please make conrmation of the attachment state of the lamp 
and lamp cover, and then turn the power on again.
64, 65
Neither sounds
nor pictures are
outputted.
The signal cables are not correctly connected.
Correctly connect the connection cables.
9
Signal source does not correctly work.
Correctly set up the signal source device by referring to the 
manual of the source device.
–
The input changeover settings are mismatched.
Select the input signal, and correct the settings.
17, 18
The BLANK function for pictures and the MUTE 
function for sounds are working.
AV Mute may be active. Refer to the item “Sound does not 
come out” and “No pictures are displayed” on the next page 
to turn off the MUTE and BLANK functions.
17, 22
(Continued on next page)