Knoll Systems HD225 - Manual (Page 23)

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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.