BenQ PB8253 user manual Troubleshooting, Projector does not turn on, No picture, Blurred image

Page 55

Troubleshooting

The projector does not turn on.

Cause

Remedy

 

 

 

Plug the power cord into the AC inlet on the

There is no power from the power

projector, and plug the power cord into the

cable.

power outlet. If the power outlet has a switch,

 

make sure that it is switched on.

 

 

Attempting to turn the projector on

Wait until the cooling down process has

again during the cooling process.

completed.

 

 

No picture

Cause

Remedy

 

 

The video source is not turned on or

Turn the video source on and check that the

connected correctly.

signal cable is connected correctly.

 

 

The projector is not correctly

Check the connection.

connected to the input source device.

 

 

 

The input signal has not been

Select the correct input signal with the

SOURCE key on the projector or remote

correctly selected.

control.

 

 

 

The lens cover is not open.

Remove the lens cover.

Blurred image

Cause

Remedy

 

 

The projection lens is not correctly

Adjust the focus of the lens using the focus

focused.

ring.

 

 

The projector and the screen are not

Adjust the projection angle and direction as

aligned properly.

well as the height of the projector if necessary.

 

 

The lens cover is not open.

Remove the lens cover.

There is dirt or dust on the lens.

Clean the lens as described in "Cleaning the

lens" on page 48.

 

 

 

Remote control does not work

Cause

Remedy

 

 

The batteries are out of power.

Replace the batteries with new ones.

There is an obstacle between the

Remove the obstacle.

remote control and the projector.

 

 

 

You are too far away from the

Stand within 6 meters (19.5 feet) of the

projector.

projector.

 

 

Troubleshooting 55

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Contents Welcome Disclaimer CopyrightTable of contents Temperature information Safety Instructions Important safety instructionsSafety Instructions Allow at least 50 cm clearance from walls Locations near fire alarmsLocations with an ambient temperature Bedding or any other soft surfaceSafety Instructions Introduction Projector featuresIntroduction Shipping contents Lower view Projector exterior viewFront/upper side Rear/side viewConnector panel Projector Controls and functionsRemote control Mode LED indicator lightVolume + PIP POSCeiling front Floor front Remote control effective rangeRemote control batteries Ceiling rearChoosing a location Positioning your projectorSafety instructions for ceiling mounting of the projector Obtaining a preferred projected image size Page 1500 Maximum zoom Minimum zoomScreen Center of lens Projection distance 1219Connecting a computer Connecting a computer or monitorConnection Connection With a VGA cable With a VGA to DVI-A cable Connecting a monitorVGA to DVI-A Better video quality Connecting Video source devicesConnecting Audio Best video qualityMute on page 45 for details Connecting a DVI source deviceConnecting a Component Video source device Connecting an S-Video source device Connecting a composite Video source device Operation Power onStart up Adjusting the projected image Switching input signalAdjusting the projection angle Searching for details on the image Auto-adjusting the imageFine-tuning the image size and clarity Any problems?Scales an image so that it is displayed in the center Selecting the aspect ratioCorrecting keystone Optimizing the imageFor example PC/DVI-A Signal Input Selecting a preset modeYPbPr/YCbCr/DVI-D/S-Video/Video Signal Input Selecting a color temperature Other adjustmentsAdjusting brightness Adjusting contrastPersonalizing the projector menu display Operating in a high altitude environmentFreezing the image Using the laser pointer in the presentationHiding the image Remote paging operationsPIP Picture In Picture operation Operation on the remote controlOperation in the OSD menus Shutting down the projector OSD menu system On-Screen Display OSD menu operationPressing Left/ Right on the projector or remote control Using the menusDisplay menu Display menu Image menu Treble VolumeSource menu MirrorControl menu PIP menu Care of the projector MaintenanceRear filter Front filter11, and the other is on the left side see item 16 on Lamp information Use and replacement of the lampReplacing the lamp Temperature information Projector is under normal operation IndicatorsStand-by mode IllustrationPower Temp Lamp Thermal events No picture TroubleshootingRemote control does not work Projector does not turn onRemote mouse function does not work Projector specifications SpecificationsSupported timing for PC including DVI-I input DimensionsTiming chart Horizontal Vertical Pixel Resolution Frequency Mode KHz MHzSupported timing for Component-YPbPrinput Signal Format Horizontal Frequency Vertical Frequency KHzSupported timing for Video and S-Video inputs Limited Warranty WarrantyMIC statement Regulation StatementsFCC statement EEC statement
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