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© 3M 1999 3M
Multimedia Projector MP8670
ENGLISH
23
Section 7: Troubleshooting
Symptom Cause Solution
Power cannot be The Main power 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 and 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 isConnect the cable to correct input/output source.
not correct.
Sound is heard with no 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 with Audio wiring to projector is not correct.Connect the cable to correct input/output source.
no sound. The volume is set to minimum. Press the VOL button to increase Volume.
The unit 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 incorrectly.
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.
LAMP indicator blinks Air filter door on bottom of case
• Ensure air filter door is closed.
red. is open.
TEMP indicator lights Temperature inside projector • Clear blocked ventilation holes.
red. is too hot. Clean air filter.
7.1Symptom/Solution Table
Error Message Displays
NO INPUT IS DETECTED.
SYNC IS OUT OF RANGE.
CHANGE THE LAMP.
CALL A MAINTENANCE
PERSON.
CHANGE THE LAMP.
CALL A MAINTENANCE
PERSON.
THE POWER WILL TURN
OFF AFTER * HR.
CHANGE THE LAMP.
(Blinking message)
Cause
The projector is not detecting a signal.
The horizontal frequency of input signal
exceeds projector capability.
Nearing end of normal lamp operation time.
Remaining lamp operation time = 20 hours
or less.
*Indicates number of hours until power turns
off automatically.
Normal lamp operating time has expired.
Solution
Check cable connections to input device. Input device not
connected to this input mode, switch to next mode.
Switch projector to correct resolution.
See Appendix A.5
Change the projector lamp and reset the lamp operation
hours to zero.
Change the projection lamp and reset the lamp operation
hours to zero.
Change the projector lamp and reset the lamp operation
hours to zero.
7.2Message/Solution Table
24


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