Sanyo PLC WM5500L Owner's Manual page 63

Shutter
Shutter function is available to block out light to the screen, so that
the screen can be used for the other presenters.
Protection
Prohibit the shutter operation from the remote control and the
projector's side control.
Remote control . . Selecting On prohibits the shutter
operation from the remote control.
Projector . . . . Selecting On prohibits the shutter
operation from the side control.
It is possible to prohibit the shutter operation from both of the
remote control and the side control.
Management
The Shutter Management function turns off the projection lamp
when the projector is left with the shutter closed and the set time
has passed away. The count-down time can be set between 5
and 480 minutes. When the count-down time has elapsed, the
shutter will be opened up automatically and the lamp will be
turned off to cool itself down. The SHUTTER indicator is blinking
blue during this cooling-off period. When the lamp has been fully
cooled down, the POWER indicator turns green lighting and the
SHUTTER indicator keeps blinking. Should the ON / STAND-BY
button be pressed in this condition, the projection lamp will be
turned on and the SHUTTER indicator turns off.
Note:
T he Shutter Management function cannot be halted.
Shutter
Setting
6