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Troubleshooting suggestions 63
Sound problems
If no sound is coming out of the projector:
• Be sure you have an audio cable securely connected between the projector and the
source device.
•Press enter, go to Sound, and check that Mute is turned off and Volume is correct.
•Press enter, go to Sound > Internal speakers, and be sure the speakers are turned on.
•Press enter, go to Help > Diagnostics, and run the sound test.
• Be sure that the mute and volume settings are correct on the source device, such as a
VCR, camcorder, or computer.
Interruption problems
If the projector stops responding to all controls:
• If possible, turn off the projector, then unplug the power cord and wait at least 15
seconds before reconnecting power.
If the lamp shuts off during a show:
• A minor power surge might cause the lamp to shut off. This is normal. Wait a few
minutes, then power on the projector.
• If a red warning light is on or blinking, see “Warning light problems” on page 59.
If the lamp burns out or makes a popping sound:
• If the lamp burns out and makes a popping sound, the projector will not turn back on
until the lamp module has been replaced.
• If the lamp breaks, contact HP about repairs that might be required due to glass
fragments.
Remote control problems
If the remote control does not operate:
• Be sure nothing is blocking the remote control receiver on the front or back of the
projector. Move to within 9 m (30 ft) of the projector.
• Aim the remote control at the screen or at the front or back of the projector.
• Move the remote control so it is more directly in front of or behind the projector and not
as far to the side.
•Press enter, go to Help > Diagnostics, and run the remote control test.
• Replace the battery in the remote control.