Maintenance – Knoll Systems HD272 User Manual
Blank Screen: determines what color displays when you press
the Blank button on the remote or when no source is active.
Language: allows you to select a language for the onscreen
display of menus and messages.
Use these features, highlight them and press Select.
Factory Reset: restores all settings (except Lamp Hours, Ceiling, and Rear) to their default after displaying
a confirmation dialog box.
Test Pattern: displays a test pattern when the Blank button on the remote is pressed. To select the
patterns, use the up/down arrows on the remote or keypad.
Service Code: only used by authorized service personnel.
Cleaning the lens
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.
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.