BenQ PB8120, PB8230, PB8220 user manual Troubleshooting, Common Problems & Solutions

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Troubleshooting

Common Problems & Solutions

NO POWER

Try these solutions:

Make sure the power cord is inserted snugged into the AC adapter socket.

Make sure the power cord is inserted snugged into the power outlet.

Toggle the power switch to the position “ ”.

Wait two minutes after the projector is turned off before turning the projector back on.

NO PICTURE

Try these solutions:

Check for the proper input source.

Ensure all cables are connected properly.

Adjust the brightness and contrast.

Remove the lens cap.

TRAPEZOID IMAGE ON THE SCREEN

Try these solutions:

Reposition the unit to improve its angle on the screen.

Use the Keystone correction key on the control panel of the projector or the remote control unit.

POOR COLOR

Try these solutions:

Select the correct video system.

Adjust brightness, contrast, or saturation.

BLURRED IMAGE

Try these solutions:

Press Auto on the control panel of the projector or the remote control unit to get better picture quality.

Adjust the focus.

Reposition the unit to improve its projection angle.

Ensure the distance between the unit and screen is within the adjustment range of the lens.

REMOTE CONTROL DOES NOT WORK

Try these solutions:

Replace the batteries with new ones.

Make sure there is no obstacle between the remote control and the projector.

Stand within 6 meters (19.5 feet) of the projector.

Make sure nothing is blocking the front and rear receivers.

Troubleshooting 27

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Contents PB8230/ PB8220/ PB8120 Digital Projector User’s Manual WelcomeCopyright Table of Contents Troubleshooting Refer servicing to qualified service personnel Important Safety InstructionsSafety Instructions Safety Instructions Introduction Projector FeaturesShipping Contents Back View Projector DescriptionsFront View Left ViewExternal Control Panel Adjuster LED Remote Control DescriptionInstalling or Replacing Batteries Remote control effective rangeScreen Size InstallationHdtv description Connecting to Various EquipmentUSB Connecting to Various EquipmentStart Up OperationDigital Keystone Correction Auto AdjustmentMenu System Source SelectionDisplay Menu Image Menu Source Menu Control Menu PIP Position PIP MenuMore Options Shutdown Lamp Replacement MaintenanceUse and Replacement of the Lamp Lamp LED IndicatorsPage Temp Information Resetting Lamp HoursOrdering Parts or Getting Information Service InformationAccessories included in the standard package Optional Accessories not included in the standard packageCommon Problems & Solutions TroubleshootingStatus Messages Projector Specifications SpecificationsSupported timing for PC input Timing ChartHorizontal Vertical Pixel Resolution Frequency Mode KHz MHz Signal Format Horizontal FrequencySupported timing for Video and S-Video inputs Video mode Horizontal VerticalFrequency Hz MHz Dimensions Limited Warranty WarrantyMIC Statement Safety RegulationsFCC Statement EEC Statement