Knoll Systems HD225 user manual Maintenance Cleaning the lens, Replacing the projection lamp

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Service: to use these features, highlight them and press Select.

Factory Reset: restores all settings (except Lamp Hours) to their default after displaying a confirmation dialog box.

Lamp Reset: resets the lamp hours counter in the About menu to zero. Do this only after changing the lamp. It displays a confirmation dialog box.

Service Info: provides information about the projector’s software version and the active source.

Service Code: only used by authorized service personnel.

Maintenance

Cleaning the lens

1 Apply a non-abrasive camera lens cleaner to a soft, dry cloth.

Avoid using an excessive amount of cleaner, and don’t apply the cleaner directly to the lens. Abrasive cleaners, solvents or other harsh chemicals might scratch the lens.

2 Lightly wipe the cleaning cloth over the lens in a circular motion. If you

don’t intend to use the projector immediately, replace the lens cap.

Replacing the projection lamp

The lamp hour timer in the About menu counts the number of hours the lamp has been in use. When the lamp timer reaches the estimated total lamp life, the LED on the projector’s keypad blinks red (indicating a lamp error, see page 26) and a dialog box appears each time the projector is turned on.

You can order new lamp modules from your dealer.

1 Turn off the projector and unplug the power cable.

2 Wait 60 minutes to allow the projector to cool thoroughly.

3 Turn the projector upside down and remove the lamp door by loosening the captive screw and then prying the lamp door out.

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Contents HD225 FCC Warning Declaration of ConformityTable of Contents Important Operating Considerations for Safety Introduction Connector PanelPositioning the projector Video connections Connecting the power cable Connecting a video device? No startup screen? Get help on Displaying a video imageConnecting a computer Turning off the projector Power SaveShutting down the projector Screen SavePage Page Still having problems? Using the remote control Using the keypad buttonsCustomizing the projector Troubleshooting the remoteUsing the audio Troubleshooting audioOptimizing video images Using the menusPicture menu Page Advanced settings Settings menu Page Replacing the projection lamp Maintenance Cleaning the lensPage Using the security lock Cleaning the dust filtersProjected image size Image sizes Red LED behavior and projector errorsRed LED Behavior Explanation  Copyright 2004 Knoll Systems. All Rights Reserved