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Multimedia Projector MP8755/MP8755L/MP8770/MP8770L
ENGLISH
23
Power cannot be turned
on.
No picture and sound.
Sound is heard with no
picture.
Picture is displayed with
no sound.
Color is weak and tint is
incorrect.
Picture is dark.
Picture is not clear.
LAMP indicator lights
red.
LAMP indicator blinks
red.
TEMP indicator blinks
red.
Section 7: Troubleshooting
• The main power is not turned on.
• The power cord is disconnected.
• 60 seconds have not elapsed since
the power was turned off.
• The setting of the input source is
not correct.
• RGB/Video/Audio wiring to
projector is not correct.
• RGB/Video/Audio wiring to
projector is not correct.
• The brightness is set fully to dark.
• Lens cap is on.
• Audio wiring to projector is not
correct.
• The volume is set to minimum.
• The unit is muted.
• PinP is on and audio is switched to
VIDEO mode.
• The color and tint have been
adjusted incorrectly.
• The brightness and contrast has
not been adjusted correctly.
• The lamp needs to be replaced.
• Projector is out of focus.
• Lamp will not ignite.
• Temperature inside projector is too
hot.
• Lamp access door on bottom of
case is open.
• The lamp operating hours have
reached maximum operating hours.
• Cooling fan not operating.
Cause
Symptom
• Turn on the MAIN POWER SWITCH.
• Insert the power cord into an AC socket.
• Wait 60 seconds before turning on power.
• Set the correct input using the input select button of
the projector or the remote control.
• Connect the cable to correct input/output source.
• Connect the cable to correct input/output source.
• Press the MENU button and increase BRIGHTNESS.
• Remove lens cap.
• Connect the cable to correct input/output source.
• Press the VOL button to increase Volume.
• Press the MUTE button.
• Press VOLUME and move DISC PAD to switch to
audio input.
• Adjust the color and tint correctly.
• Adjust the brightness and contrast correctly.
• Replace the lamp with a new one.
• Adjust the focus and H PHASE.
• Turn off power and let cool for 20 minutes, then
restart.
• If problem persists call your dealer.
• Clear blocked ventilation holes.
• Clean air filter.
• Ensure lamp access door is closed.
• Replace the lamp.
• Contact your dealer.
Solution
7.1 Symptom/Solution Table