NEC NC2041L, Руководство пользователя

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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 Check these items
The projector cannot be turned on. Check to see if AC power is supplied to the projector.
Make certain that the projector power switch and light 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.
Is the administrator key inserted? The projector will not function unless the administrator key is
inserted.
The image cannot be projected. 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.
The image is distorted. Check to see if the protractor is properly set up.
The image is blurred. 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.
Video image is disturbed. Check whether the signal cable connected to the projector is disconnected.