NEC VT440 Service Manual page 52
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- User manual (42 pages) ,
- Installation data (8 pages) ,
- Specifications (2 pages)
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(2) Adjustment of Ceiling
Check [Ceiling].
Click the [ON] button in the Test Pattern box in order to display the internal horizontal line signal.
If this [ON] button is clicked continuously, a changeover action takes place in the toggle mode in the
course of R-> G-> B-> R. Make adjustments with the scroll bar so that the flicker in the center part
becomes minimum for each color.
When adjustments have been finished for both (1) and (2) above, click the [Set] button in the Data box.
Click the [CLS] button in the Test Pattern box in order to clear the internal test signal.
<Adjustment of Ghost>
Select the [Ghost] tab for servicing software.
Click the [ON] button in the Test Pattern box in order to display the internal ghost adjusting signal.
Make adjustments with the scroll bar so that the ghost becomes minimum for each color.
When adjustments have been finished, click the [Set] button in the Data box.
Click the [CLS] button in the Test Pattern box in order to clear the internal test signal.
<Modification of Lamp, Filter, Panel, and Projector Usage Time>
In the case of failure in the <Copying of the V-T data, ADJ data, Logo data, and Uniformity data> to be
carried out in the first place, each usage time must be fixed at "0 hours." Therefore, make the setting of
each usage time, as required.
Let the PJ power supply stay in the STAND BY state and select the [Lamp] tab for servicing software.
Make the modification of the usage time according to the descriptions (1), (2), and (3) below.
(1) Modification of the lamp usage time
Check [Change time (Lamp Usage Time)] and make the setting of lamp usage time by the use of the
scroll bar.
After the completion of this setting, click the [Set] button.
(2) Modification of the filter usage time
Check [Change time (Filter Usage Time)] and set the lamp usage time using the scroll bar/editor input.
After the completion of this setting, click the [Set] button.
(3) Modification of the panel usage time
Check [Change time (Panel Usage Time)] and set the lamp usage time using the scroll bar/editor
input.
After the completion of this setting, click the [Set] button.
(4) Check [Change time (Projector Usage Time)] and set the lamp usage time using the scroll bar/editor
input.
After the completion of this setting, click the [Set] button.
Upon the completion of (1), (2), (3), and (4) above, pull out the AC cord of the PJ and confirm that the
Power indicator is unlit. Since then, connect the AC cord again.
<Language Setting>
Select the [Lamp] tab for servicing software.
In the case of the domestic (Japan) mode, check [VTxxxJ Model] in the Language box.
In the case of an overseas mode, check [Vtxxx, G, GS Model].
In this unit, the factory data only are rewritten to hold the user setting values for the <Copying of the V-T
data, ADJ data, Logo data, and Uniformity data> to be carried out in the first place. For this reason, there
can be no coincidence between the set language and the displayed language (user setting).
METHOD OF ADJUSTMENTS
5-5
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