User manual - A257_M256_UsersGuide
71
Important!
z Try performing the following steps, which may or may not return the projector to normal 
operation.
z If normal operation does not resume after you perform the above steps, take the projector to 
your retailer or authorized CASIO service center.
Text is blurry. z The image may be out of focus. Adjust image focus.
z The current frequency and/or phase setting do not match the input signal. (Applies 
only when the input source is an RGB signal.) Press the [AUTO] key to execute an 
automatic adjustment operation.
z On the setup menu, perform the “Image Adjustment 2 J Frequency” and “Image 
Adjustment 2 J Phase” adjustments. (Applies only when the input source is an 
RGB signal.) See page 58.
The message “Please input 
the password.” appears 
and further operation is not 
possible.
The “Option Settings 1 J Power On Password” setting on the setup menu is turned 
on, so the projector is password protected. Input the correct password, and then 
press the [ENTER] key. See page 62.
The remote controller does 
not work.
z The remote controller batteries may be dead. Replace the batteries.
z The remote controller may be too far from the projector. Make sure the remote 
controller is within about five meters from the projector when performing 
operations.
The TEMP or LIGHT 
indicator is flashing or lit.
An error occurred. See “Error Indicators and Warning Messages” (page 68).
The light source unit does 
not light.
The light source unit has reached the end of its service life or it is malfunctioning. 
Contact your original dealer or authorized CASIO service center for replacement.
Power suddenly turns off 
and the projector restarts.
The projector periodically performs a self-check operation. In rare cases, the result of 
a self-check may cause the projector to restart automatically. This normally does not 
indicate malfunction, so you can continue using the projector.
However, malfunction may be indicated if successive restarts keep occurring. If this 
happens contact your original dealer or authorized CASIO service center.
1. Unplug the AC power cord and wait for at least 10 minutes.
2. Plug the power cord back in and turn the projector back on again.
Problem Cause and Recommended Action










