3M MP8620 manual Troubleshooting Problems

Page 18

Section 8: Troubleshooting

8-1. Troubleshooting Problems

The MP8620 has been designed to be as simple and as trouble free to use as possible. If you run into problems when using the MP8620, consult the following chart.

 

Problem

Probable Cause

Possible Solution

 

 

 

Image is disturbed or

∙

Wrong Sync setting.

∙ Set to factory default setting (refer to Appendix C-2).

 

 

unstable.

 

 

∙ Change Sync setting in the Setup menu for optimum

 

 

 

∙

 

performance (refer to Appendix C-1).

 

 

 

Wrong Tracking

∙ For vertical interference stripes, change the Tracking in

 

 

 

 

value.

the Setup menu for optimum performance (refer to

 

 

 

 

 

Appendix C-1).

 

 

 

No computer image

∙

Loose cable.

∙ Check and secure cable connections.

 

 

projected. Message

∙

No power to computer.

∙ Turn on computer.

 

 

 

No input detected is

∙

Wrong synchronization

∙ Adjust synchronization mode of the projector to the

 

 

shown.

 

mode.

synchronization mode of the computer via Option menu.

 

 

No video image

∙

Loose cable.

∙ Check and secure cable connections.

 

 

projected.

∙

No signal from video

∙ Check video picture on TV.

 

 

 

 

source.

 

 

 

 

Mouse does not work.

∙

Loose cable.

∙ Check and secure cable connections.

 

 

 

∙

Wrong connection.

∙ For PS/2 and ADB (Apple) mouse a special adapter is

 

 

 

 

 

necessary. Only use adapters from the original

 

 

 

 

 

manufacturer (refer to section 3-5.).

 

 

 

∙

Wrong power up

∙ The mouse emulation operates correctly only if the correct

 

 

 

 

sequence.

power up sequence has been used (refer to section 3-5.)

 

 

Image off-center.

∙

Image position.

∙ Center image with the arrow keys of the control panel or

 

 

 

 

 

the stick of the remote control.

 

 

Cannot get entire

∙

Wrong Tracking

∙ If vertical interference stripes occur, change the Tracking

 

 

image on the screen.

 

value.

value in the Setup menu for optimum performance.

 

 

 

∙

Compatibility

∙ Refer to the documentation of your graphic card. The

 

 

 

 

problem.

projector supports the resolutions that can be found under

 

 

 

 

 

Pixel in the Setup menu (refer to Appendix C-2).

 

 

 

∙

 

∙ Adjust the Pixel setting in the Setup menu to the

 

 

 

Wrong Pixel setting.

resolution of the video mode output from the computer

 

 

 

 

 

graphic card.

 

 

 

Washed out image.

∙

Wrong Contrast

∙ Change Contrast setting in the Setup menu. The bar

 

 

 

 

setting.

should be in the middle position.

 

 

 

∙

Wrong Brightness

∙ Lower Brightness setting in the Setup menu. An automatic

 

 

 

 

setting.

adjustment can be performed by choosing Brightness and

 

 

 

 

 

pressing Enter.

 

 

 

Humming noise.

∙

Signal sources are

∙ Locate the source of disturbance. Disconnect the sources

 

 

Slowly passing

 

connected to different

one after another from the projector. Connect all sources to

 

 

horizontal bars.

 

power sources.

a common power source.

 

 

 

∙

VCR connected to

∙ Remove antenna connection from VCR. If the disturbance

 

 

 

 

aerial system and to

disappears, use a by-pass filter (isolating transformer) to

 

 

 

 

projector..

connect the antenna

to the VCR.

 

 

 

∙

Bad signal.

∙ Try different input source.

 

 

No power

∙

Power switch off

∙ Turn on power switch to projector.

 

 

Power shuts off

∙

Projector overheated

∙ Remove any objects blocking ventilation and allow

 

 

during presentation

 

 

projector to cool down. Power will return and projector

 

 

 

 

 

will be in Standby mode.

 

 

 

 

 

 

 

 

 

©3M 1997

 

3M™ Multimedia Projector MP8620

17

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Contents MP8620 Multimedia Projector Operator’s Guide Safeguards Intended USEWarranty Inventory List Contents of Shipping BoxUnpack Keep Your Packing MaterialsMachine Characteristics Product DescriptionParts Identification List Quick Set Up Projector Set UpCable Connections Mouse Connection Projector Terminal ConnectionsControl Panel Keypad Image Size Projector-to-Screen DistanceStandby Mode Operating InstructionsProjector Start Up Projector Power Down Using System MenusMenu Adjustments/Settings Submenu Menu Item Explanation of Adjustment/SettingRemote Control How to Operate the Remote ControlReplacing the Batteries Remote Control Button Functions Remote Button Description of Button FunctionLamp Life Indicator Lamp InformationMetal Halide Projection Lamp Replacing the Lamp Removing Lamp DoorReplacing the Lamp Maintenance Replacing the Air FilterCleaning the Projector Overhead CleanerTroubleshooting Troubleshooting ProblemsService Information Appendix a Technical Specifications Technical SpecificationsPhysical Dimensions Projector-to-Screen DistanceDiagonal Width Projector-to-Screen Distance Video Input Signal Terminal Appendix B Compatibility/Video StandardsAppendix C Detailed Setup Information Setting Representation, Resolution, Colors3M Multimedia Projector MP8620 Factory Default Settings NtscAccessory Parts List How to OrderPart Description UL Reference Part Number Power Cord Sets Figure D-1. Power Cord SetsGlossary Glossary of TermsResolution Remote control sensorRemote control transmitter VideoIndex Index3M Austin Center 3M Canada 3M Mexico, S.A. de C.V 3M Europe

MP8620 specifications

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