Maintenance; Cleaning The Lens; Replacing The Projection Lamp - InFocus SP4800 User Manual

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 hours used timer in the About menu counts the number of hours
the lamp has been in use. After approximately 3,980 hours, the message
"Change lamp" appears on the screen at startup. If the maximum lamp time
of up to 4,000 hours is exceeded, the lamp will not light. In this case, after
replacing the lamp you must reset the lamp hours by simultaneously press-
ing both Volume buttons on the projector's keypad and holding them for 10
seconds.
NOTE: You can order new lamp housings from your dealer. See "Accesso-
ries" on page 40 for information. Use only a replacement lamp with the
same type and rating as the original lamp.
1 Turn off the projector and unplug the power cord.
2 Wait 30 minutes to allow the projector to cool thoroughly.
3 Turn the projector on its side so that the lamp door is facing you. Using a
flat-blade screwdriver, gently pry the lamp door from the projector by
placing the screwdriver blade into the space between the top of the lamp
door and the projector.
37
Lamp hours used
wait 30 minutes
lamp door