3M MP7760 Troubleshooting Problems and Solutions, Problem Probable Cause Possible Solution

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Section 7: Troubleshooting

7-1. Troubleshooting Problems and Solutions

Problem

 

Probable Cause

 

Possible Solution

 

 

 

 

 

 

 

• Set to factory default setting. (See below.)

Image is disturbed or

Wrong Sync setting.

• Change Sync setting in the Picture menu for optimum

 

performance.

unstable.

Wrong Tracking value.

 

• For vertical interference stripes, change the Tracking in

 

 

 

 

 

 

 

the Picture menu for optimim performance.

 

 

 

 

No computer image

Loose cable.

• Check and secure cable connections.

Turn on computer.

projected. Message

No power to computer.

• Adjust synchronization mode of the projector to the

“ Looking for signal...”

Wrong synchronization

 

synchronization mode of the computer via the Advanced

displays.

 

mode.

 

 

 

Set-Up menu.

 

 

 

 

 

 

 

 

 

No video image

Loose cable.

• Check and secure cable connections.

• No signal from video

projected.

• Check video picture on TV.

 

source.

 

 

 

 

 

 

 

 

 

 

 

• Check and secure cable conenctions.

 

Loose cable.

• For PS/2, USB and ADB (Apple) mouse a special

 

 

adapter is necessary. Only use adapters from the original

 

Wrong connection.

 

Mouse does not work.

 

manufacturer (Section 8-2).

Wrong power up

 

 

• The mouse emulation operates correctly only if the

 

 

sequence.

 

 

 

correct power up sequence has been used (refer to

 

 

 

 

 

 

 

 

Section 3-5).

 

 

 

 

Image off-center.

Image position.

• Center image with the Disc Pad of the control panel or

 

on the remote control transmitter.

 

 

 

 

 

 

 

 

 

 

 

• If vertical interference stripes occur, change the

 

 

 

 

Tracking value in the Picture menu for optimum

Cannot get entire image

Wrong Tracking value.

 

performance.

• Refer to the documentation for your graphics card.

on the screen.

Compatibility problem.

 

Change the Resolution setting in the Picture menu to

 

 

 

 

 

 

 

 

the resolution of the video mode output from the

 

 

 

 

computer graphics card.

 

 

 

 

 

 

 

• Change Contrast setting in the Picture menu. The bar

 

Wrong Contrast setting.

 

should be in the middle position.

Washed-out image.

Wrong Brightness

Lower Brightness setting in the Picture menu.

 

 

setting.

 

Choosing Brightness and pressing Enter can perform an

 

 

 

 

automatic adjustment.

 

 

 

 

 

Signal sources are

• Locate the source of disturbance. Disconnect the

 

 

sources one after another from the projector. Connect all

 

 

connected to different

 

Humming noise.

 

 

sources to a common power source.

 

power sources.

 

Slowly passing horizontal

 

• Remove antenna connection from VCR. If the

• VCR connected to aerial

bars.

 

disturbance disappears, use a by-pass filter (isolating

 

system and to projector.

 

 

 

 

transformer) to connect the antenna to the VCR.

 

Bad signal.

 

 

• Try different input source.

 

 

 

 

 

 

 

 

Note: The factory default settings of the projector can be restored by pressing Enter/Source and Menu simultaneously on the control panel while switching on the main power switch of the projector and pressing the Standby button afterward.

The projector will start immediately and the message “Parameter factory settings restored” displayed in the starting screen will indicate the default settings are reset.

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3MMultimedia Projector MP7760

© 3M IPC 2000

 

 

 

Image 26
Contents MP7760 Multimedia Projector Page Table of Contents Intended Use Important SafeguardsIntroduction Product Safety Labels Location of Product Safety LabelsLimitation Of Liability Warranty Limited WarrantyThank you for choosing 3M Patents, Trademarks & CopyrightsKeep Your Packing Materials Contents of Shipping BoxUnpack What’s Next?Parts Identification List Machine CharacteristicsProduction Description Operator Touch Panel Keypad Set-Up/ConnectionsTerminal Connection Panel Mouse Connection Cable ConnectionsCable Connection Cable ConnectionsAdjusting Focus and Zoom Image Size Projector-to-Screen DistancePower Up Projector Operating InstructionsUsing System Menus Standby ModeProjector Power Down Menu Adjustments/Settings Main Menu Description / Action Default SettingTools Description / Action Default Setting Sub-Menu Items Description / Action Default Setting Sub-Menu Items Advanced Set-UpTest Description / Action Default Setting Sub-Menu Items Info Description / Action Display onlyRemote Control Remote Control FunctionsPointer mode Meaning Of The IconsOptimize Battery Replacement Replacing BatteriesMaintenance Replacing The Air FilterReplacing Projection Lamp Changing the lamp cartridgeLamp Life Indicator Cleaning the ProjectorProblem Probable Cause Possible Solution TroubleshootingTroubleshooting Problems and Solutions Service Information Product Specifications Technical SpecificationsAccessory & Spare Parts List Part Description Part NumberHow to Order Power Cord Sets AppendixFactory Default Settings Example of Computer Signals Table of the predefined Data modesPredefined Resolutions For more information, please refer to the CD-ROMPage Important Notice

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