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3M
™
Personal Projector MP8746/MP8747
© 3M IPC 2000
Section 7: Troubleshooting
Symptom Cause Solution
Power cannot be • MAIN POWER switch is not turned on. • Turn the MAIN POWER switch on.
turned on. • The power cord is disconnected. • Insert the power cord into an AC socket.
• 60 seconds have not elapsed since • Wait 60 seconds before turning on power.
the power was turned off.
No picture or sound. • The setting of the input source is not • Set the correct input using the input select button of
correct. the projector or the remote control.
• RGB/Video/Audio wiring to projector is • Connect the cable to correct input/output source.
not correct.
Sound is heard without • RGB/Video/Audio wiring to projector • Connect the cable to correct input/output source.
picture. is not correct.
• The brightness is set fully to dark. • Press the MENU button and increase BRIGHTNESS.
• Lens cap is on. • Remove lens cap.
Picture is displayed • Audio wiring to projector is not correct. • Connect the cable to correct input/output source.
without sound. • The volume is set to minimum. • Press the VOL button to increase Volume.
• The volume is muted. • Press the MUTE button.
Color is weak and tint is • The color and tint have been adjusted • Adjust the color and tint correctly.
incorrect. incorrectly.
Picture is dark. • The brightness and contrast has not • Adjust the brightness and contrast correctly.
been adjusted correctly.
• The lamp needs to be replaced. • Replace the lamp with a new one.
Picture is not clear. • Projector is out of focus. • Adjust the focus and H. PHASE.
LAMP indicator lights • Lamp will not ignite.
• Turn off power and let cool for 20 minutes, then restart.
red.
• If problem persists call your dealer.
• Temperature inside projector is too hot. • Check and clear blocked ventilation holes.
• Check and clean air filter.
LAMP indicator blinks • Lamp access door on bottom of case
• Ensure lamp access door is closed.
red. is open.
• The lamp usage has reached • Replace the lamp.
maximun operating hours.
TEMP indicator blinks • Cooling fan not operating. • Contact your dealer.
red.
Symptoms/Solutions