Knoll hd177 User Manual

Page of 34
 
24
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. 
 
 
 
 
 
 
 
 
 
Service Menu
 
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. 
 
Maintenance 
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.