Lamp - NEC VT440 Service Manual

4-5. Lamp

<Change time (Lamp Usage Time)>
This function is used when changing the lamp usage time.
The action for the modification of the lamp usage time should be carried out while the PJ power supply is
made to stay in the Standby mode.
At the beginning (at the time of adjusting software start), the projector data are acquired and stored as the
initial values.
However, if ADJ Data Write is performed with [Data], the written data are stored as the initial values.
If it is necessary to change the Lamp Usage Time, check the Change Time. Then the usage time is displayed
as "0 Hours" and the percentage indication as "100%." When the display is like that, operation becomes
possible with the scroll bar, the [Set] button, and the [Reset] button.
Set up the proper time and percentage with the scroll bar.
When the [Set] button is clicked, the lamp usage time and percentage preset with the scroll bar are written in
the Flash ROM and displayed on the [Set] button.
When the [Reset] button is clicked, the lamp usage time and percentage are restored to the initial values (the
values at the time of adjusting software start) and written in the Flash ROM. Since then, the display on the
[Set] button is cleared.
After the Lamp Usage Time has been changed ([Set] and [Reset]), pull out the AC cord of the PJ without fail
and confirm that the Power LED is unlit.
When changing the Lamp Usage Time to "0 Hours" and "100%," use the ON-screen menu. Then, clearing
becomes possible.
Setting range: 0 Hours - 3000 Hours
0% - 100%
METHOD OF ADJUSTMENTS
5-13