Sanyo PLV-75 Owner's Manual page 43

Lamp counter
This function is used to reset the lamp replace counter. When
replacing the projection lamp, reset the lamp replace counter by
using this function. See page 47 for operation.
Factory default
This function returns all setting values except for the user logo,
Key lock, PIN code lock, logo PIN code lock and the lamp counter
to the factory default settings.
Factory default
Select Factory default and this
box appears. Select [Yes] , and
the next box appears.
Select [Yes] to
activate it.
SETTING
43