Sanyo PLC-WXU300K - Manual (Page 58)

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This function provides the following options in the cooling
fans’ operation when the projector is turned off (p.20).
L1 ...... Normal operation
L ...... Slower and lower-sound than the normal
operation (L1), but it takes more time to cool the
projector down.
Fan
This projector provides Fan control function in the Setting
menu.
Choose the running speed of cooling fans from the following
options according to the ground elevation under which you
use the projector.
Off
................ Normal speed. Set this function to Off when
using the projector in non-high altitude
environment.
On 1
............. Faster than Off mode. Select this mode
when using the projector in high altitudes
(about 1,200 meters or more above the sea
level) where the fans have less cooling
effect.
On 
............. Faster than On 1 mode. Select this mode
when using the projector in higher altitudes
than above where the fans have lesser
cooling effect.
Note:
The fan noise becomes louder in On 1 and On.
Fan control
Setting
This function is used to set a frequency for the filter
cleaning.
When the projector reached a specified time between
cleanings, a Filter warning icon appears on the screen,
notifying the cleaning is necessary. After cleaning the filter,
be sure to select RESET and set the timer. The Filter
warning icon will not turn off until the filter counter is reset.
For details about resetting the timer, refer to “Resetting the
Filter Counter” on page 62.
Filter counter
Filter counter
Press the SELECT button to select Timer, and
then use the Point
◄► buttons to set the timer.
Select from (Off/100H/ 00H/ 300H) depending
on the use environment.
Filter warning icon appears on the screen at a set time.
Fig .1
Filter warning icon
Note:
This icon also appears at turning on.
Note:
The Lamp replacement icon will not appear when the
Display function is set to Off (p.46), during "FREEZE
button" (p.25), or "NO SHOW button" (p.26).