3M MP8770/MP8770L, MP8755/MP8755L Troubleshooting, Symptom/Solution Table, Symptom Cause Solution

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Section 7: Troubleshooting

7.1 Symptom/Solution Table

Symptom

 

Cause

Solution

Power cannot be turned

The main power is not turned on.

• Turn on the MAIN POWER SWITCH.

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

• Set the correct input using the input select button of

 

 

not correct.

the projector or the remote control.

 

RGB/Video/Audio wiring to

• Connect the cable to correct input/output source.

 

 

projector is not correct.

 

 

 

 

 

Sound is heard with no

RGB/Video/Audio wiring to

• Connect the cable to correct input/output source.

picture.

 

projector is not correct.

• Press the MENU button and increase BRIGHTNESS.

 

The brightness is set fully to dark.

 

Lens cap is on.

• Remove lens cap.

 

 

 

 

Picture is displayed with

Audio wiring to projector is not

• Connect the cable to correct input/output source.

no sound.

 

correct.

• Press the VOL button to increase Volume.

 

The volume is set to minimum.

 

The unit is muted.

• Press the MUTE button.

 

PinP is on and audio is switched to

• Press VOLUME and move DISC PAD to switch to

 

 

VIDEO mode.

audio input.

 

 

 

 

Color is weak and tint is

The color and tint have been

• Adjust the color and tint correctly.

incorrect.

 

adjusted incorrectly.

 

 

 

 

 

Picture is dark.

The brightness and contrast has

• Adjust the brightness and contrast correctly.

 

 

not been adjusted correctly.

• Replace the lamp with a new one.

 

The lamp needs to be replaced.

 

 

 

 

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

red.

 

 

restart.

 

 

 

• If problem persists call your dealer.

 

 

 

 

• Temperature inside projector is too

• Clear blocked ventilation holes.

 

 

hot.

• Clean air filter.

 

 

 

 

LAMP indicator blinks

Lamp access door on bottom of

• Ensure lamp access door is closed.

red.

 

case is open.

 

 

 

 

 

• The lamp operating hours have

• Replace the lamp.

 

 

reached maximum operating hours.

 

 

 

 

TEMP indicator blinks

• Cooling fan not operating.

• Contact your dealer.

red.

 

 

 

ENGLISH

© 3M 2000

3MMultimedia Projector MP8755/MP8755L/MP8770/MP8770L

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Contents MP8755/MP8755L MP8770/MP8770L Multimedia Projector Page Table of Contents English Intended USE SafeguardsLaser Aperture Location of Product Safety LabelsLimited Warranty WarrantyLimitation of Liability PATENTS, Trademarks & CopyrightsOptional Accessories Contents of Shipping BoxUnpack Keep Your Packing MaterialsProduct Description Machine Characteristics1210 Part Identification ListVCR System Setup Connecting Various EquipmentSystem Setup Connecting Various Equipment PinP∗ Remote Control Transmitter IdentificationProjector Startup Basic OperationsProjector Shutdown How To Use Height Adjustment Feet Adjustments and FunctionsFront View Side ViewFreeze Function Plug & Play FunctionMagnify Function Picture-in-PictureMenu Navigation Factory Default SettingAdjustment Item SetupInput Adjustment Value AreaImage Adjustment Value Screen10 OPT Adjustment Value Default ScreenCleaning the Air Filter MaintenanceLamp Reset Lamp HoursLamp Display Lamp Operation HoursLamp Module Replacing the LampSymptom/Solution Table TroubleshootingSymptom Cause Solution Error Message Cause Solution Displays Message/Solution TableService Information AccessoriesAccessories How to OrderQR46271

MP8755/MP8755L, MP8770/MP8770L specifications

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