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3M
Multimedia Projector MP8635 © 3M 1999
ENGLISH
20
Section 7: Troubleshooting
7.1 Symptom/Solution Table
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 elpsed 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 is Connect 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.
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 and 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 been Adjust the brightness and contrast correctly.
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.
LAMP indicator lights Lamp will not ignite.
• Turn off power and let cool for 45 minutes, then restart.
red.
• If problem persists call your dealer.
LAMP indicator blinks Lamp door is open.
• Lamp door is closed.
red.
Lamp module is not connected correctly.
Insert lamp module and ensure that it is secured properly.
TEMP indicator lights Temperature inside projector • Do not block the ventilation holes.
red. is too hot. Clean air filter
TEMP indicator blinks Cooling fan may be obstructed by Align metal screen.
red. metal screen under foam air filter. If fan blade is still obstructed, call service.
Both LAMP indicator and Lamp operating time is greater Change the projector lamp and reset the lamp
ON indicator blink red. than 2,000 hours. operation hours to zero.
7.2 Message/Solution Table
Error Message
Displays
NO INPUT IS DETECTED.
SYNC IS OUT OF RANGE.
CHANGE THE LAMP.
AFTER REPLACING LAMP
RESET THE LAMP TIMER.
CHANGE THE LAMP.
AFTER REPLACING LAMP
RESET THE LAMP TIMER
THE POWER WILL TURN
OFF AFTER 20 HR.
CHANGE THE LAMP.
(Blinking message)
Cause
The projector is not detecting a signal.
The horizontal frequency of input signal
exceeds projector capability.
Lamp operation time is greater than
1,700 hours.
Lamp operation time is greater than
1,979 hours which leaves 20 hours of
lamp time.
Lamp operating time is greater than
2000 hours. Safety feature shuts
projector down after 10 minutes.
Solution
Check cable connections to input device. Input device
not connected to this input mode, switch to next mode.
Switch input device to compatible 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.
22


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