IBM iL2120 User Manual page 36

Source
This indicates the active source, (Computer 1 analog, Computer 1 digital,
Computer 2, or Video).
Software version
This indicates the projector software version. This information is useful when
you need to call an IBM technical support representative.
Startup screen version
This indicates the projector startup screen version. This information is useful
when you need to call an IBM technical support representative.
Boot version
This indicates the projector startup software version. This information is
useful when you need to call an IBM technical support representative.
CableWizard version
This indicates the CableWizard software version.
Maintenance & troubleshooting
This section describes how to:
v Clean the lens
v Replace the projection lamp
v Replace the batteries in the remote control
v Use the security lock feature
v Troubleshoot the projector
Cleaning the lens
Follow these steps to clean the projection lens:
1. Apply a non-abrasive camera lens cleaner to a soft, dry cloth.
v Avoid using an excessive amount of cleaner.
v Abrasive cleaners, solvents or other harsh chemicals might scratch the
2. Lightly wipe the cleaning cloth over the lens in a circular motion.
3. If you don not intend to use the projector immediately, replace the lens
cap.
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iL2120 IBM Value Data/Video Projector, iL2220 Conference Room Data/Video Projector: User's Guide
lens.