BenQ MP770 user manual Lamp information, Calculation of lamp hour

Page 56

Lamp information

Calculation of lamp hour

When the projector is in operation, the duration (in hours) of lamp usage is automatically calculated by the built-in timer. The method of calculating the equivalent lamp hour is as follows:

Total (equivalent) lamp hour

= 3/4 (hours used in Economic mode) +1 (hours used in normal mode)

See "Lamp Mode (Normal)" on page 51 for more information on Economic mode.

The lamp hour in Economic mode is calculated as 3/4 of that in normal mode. That is, using the projector in Economic mode helps to extend the lamp hour by 1/3.

Warning message

When the Lamp indicator lights up red or a message appears suggesting it is time to replace the lamp, please install a new lamp or consult your dealer. An old lamp may cause a malfunction in the projector and in some instances the lamp may explode.

The Lamp indicator light and Temperature warning light will light up if the lamp becomes too hot. Turn the power off and let the projector cool for 45 minutes. If the Lamp or Temp indicator still lights up after turning the power back on, please contact your dealer. See "Indicators" on page 60 for details.

The following Lamp warning displays will remind you to change the lamp.

Message

Status

 

 

 

 

 

 

 

The lamp has been in operation for 2800 hours.

 

WARNING

 

 

 

Install a new lamp for optimal performance. If the

 

Replace the Lamp

 

 

 

projector is normally run with "Economic Mode"

 

The lamp life is over 2800 hours.

 

selected (See "Lamp Mode (Normal)" on page 51),

 

If the projected image gets

 

you may continue to operate the projector until the

 

darker, please replace the lamp.

 

2950 hour lamp warning appears.

 

 

 

 

OK

 

 

 

 

 

 

 

 

 

 

 

 

 

The lamp has been in operation for 2950 hours. A

 

WARNING

 

 

 

new lamp should be fitted to avoid the

 

Replace the Lamp

 

 

 

inconvenience of shutdown when the projector

 

Immediately

 

 

 

runs out of lamp time.

 

 

 

 

The lamp life is over 2950 hours.

 

It is strongly recommended that you replace the

 

Please replace the lamp, and reset

 

 

the lamp timer.

 

lamp at this age. The lamp is a consumable item.

 

OK

 

The lamp brightness diminishes with use. This is

 

 

 

normal lamp behavior. You can replace the lamp

 

 

 

whenever you notice that the brightness level has

 

 

 

 

 

 

significantly diminished. If the lamp is not

 

 

 

replaced beforehand, it must be replaced after 2950

 

 

 

hours usage.

 

 

 

 

56 Maintenance

Image 56
Contents Welcome Copyright DisclaimerTable of contents Troubleshooting Specifications Important safety instructions Refer servicing to qualified service personnelFuture reference Projector lamp is on Do not look straight at the projectorSafety Instructions 10000 Feet Important safety instructions Bedding or any other soft surfaceSafety Instructions Introduction Projector featuresIntroduction Shipping contents Rear side Projector exterior viewFront/upper side Controls and functions ProjectorLamp indicator light AutoRemote control LED indicator light PIPMode MuteFront Rear Remote control effective rangeRemote control batteries Positioning your projector Choosing a locationSafety instructions for ceiling mounting of the projector Obtaining a preferred projected image size Page Projection dimensions Wireless connection optional Connecting a computer or monitorConnection Cable connectionVGA With a VGA cable With a VGA to DVI-A cable Socket, not the DVI-I socketConnecting Video source devices Best video qualityBetter video quality Least video qualityConnecting a DVI source device Connecting AudioAV device DVI-D or DVI-I cable Audio Audio Cable cable1080i 50/ 60 Hz Connecting an S-Video source device To connect the projector to an S-Video source deviceConnecting a composite Video source device Operation OperationStart up Utilizing the password function Setting a passwordIf you forget the password Up , Right, Down, Left respectivelyDisabling the password function Entering the password recall procedureChanging the password Switching input signal Adjusting the projected imageAdjusting the projection angle Remote control. a source selection bar displays. YouAuto-adjusting the image Fine-tuning the image size and claritySearching for details on the projected image Correcting keystoneControl. Go to the Display Keystone menu You are satisfied with the shapeSelecting the aspect ratio Selecting an application mode Setting the User 1/User 2 modeGo to the Picture Application Mode menu Optimizing the imageFine-tuning the image quality in user modes Adjusting brightnessAdjusting contrast Selecting a color temperatureHiding the image Other adjustmentsOperating in a high altitude environment PIP Picture In Picture operation Creating your own startup screen Remote paging operationsFreezing the image Personalizing the projector menu display Shutting down the projectorPress Message will disappearMenu operation Menu systemPC source Brightest Video source Cinema/MovieAdvanced Information ResolutionBasic Using the menus Use Left/ Right to select the Display menuDisplay menu Picture menu Source menu System setup Basic menu System setup Advanced menu Mode Resolution Lamp TimerInformation menu SourceMaintenance Care of the projectorTo clean the filter Clean the Air FilterReplacing the filter sponge Check the Air FilterLamp information Calculation of lamp hourReplacing the lamp Out of Lamp Usage TimePage Restart the projector Temperature informationTighten the screw that secures the lamp Indicators Stand-by modePowering up IllustrationLight Status & Description Power Temp Lamp Thermal events Plug the power cord into the AC inlet on Make sure that it is switched onRemote mouse function does not work Specifications Projector specificationsTiming chart Supported timing for PC including DVI-I inputSupported timing for Component-YPbPrinput Supported timing for Video and S-Video inputsDimensions Mm W x 94 mm H x 230 mm D 298 Unit mm SpecificationsWarranty Limited warrantyRegulation statements FCC statementEEC statement MIC statement
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