Eiki LC-SD15 Owner's Manual page 44

Setting
Fan
This function provides the following alternatives in the cooling
fans' operation after turning off the projector. (p18)
L1 . . . . . . . . normal operation
L2 . . . . . . . . slower and lower-sound than the normal operation
(L1), but it takes longer to cool the projector down.
Lamp counter reset
This function resets the lamp replacement counter. When
replacing the projection lamp, reset the lamp replacement counter
with this function. See page 49 for operation.
Factory default
This function restores all setting values except for the user logo,
PIN code lock, Logo PIN code lock and the lamp counter to the
factory default settings.
44
Fan
Factory default
Select Factory default and this
box appears. Select [Yes], and
the next box appears.
Select [Yes] to
activate it.