Appendix; Troubleshooting - NEC NC1201L-A User Manual

6.

Appendix

6-1. Troubleshooting

Before asking for repair, please check your connection, settings and operation once again. If the trouble cannot be corrected,
please contact your dealer/distributor for instructions or repair.
6-1-1. Problems and where to check
Problem
The projector cannot be turned on.
The image cannot be projected.
The image is distorted.
The image is blurred.
Video image is disturbed.
The rear status indicator blinks in
red.
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Check to see if AC power is supplied to the projector.
Make certain that the main power switch is ON.
Check to see whether the panel key lock function is activated. If so, the main unit's control
buttons are locked and do not work.
Is the temperature inside the projector too high? When the inside temperature is too high, the
protective function does not allow your projector to be turned on. Wait some time and then turn
it on.
Check to see if the connected input has been selected.
Check to see if a cable is properly connected to the input terminal.
Check to see whether the douser is closed.
Check to see if the settings are all adjusted properly.
Check to see if the protractor is properly set up.
Make certain that the lens is properly focused.
Check to see if the screen and a projector are installed at correct angles.
The projection distance may be larger than the focusing range.
See if the lens and other parts have condensation on them. If the projector is turned on in a
warm place after storage in a cold place, the lens and other optical components inside may
develop condensation. In such a case, please wait several minutes until the condensation
disappears.
Check whether the signal cable connected to the projector is disconnected.
Your projector may have trouble. Please contact your dealer/distributor for instructions.
Check these items