Outline Software Descriptions; Equipment To Be Used And Operating Environments - NEC VT440 Service Manual

METHOD OF ADJUSTMENTS

1. Outline software descriptions

This is the PC control software for servicing adjustments to be conducted during the replacement of the MAIN
PWB, LCEP PWB, VIDEO-DEC PWB, or the LCD panel for the LCD projector, the VT440/VT540 Series.
This software is used for the adjustment of Sub-Brightness/Sub-Contrast, Flicker, and Ghost, and also the
modification of Lamp Usage Time, Filter Usage Time, Panel Usage Time, Projector Usage Time, and Language
Selection.
In addition, it enables reading and writing of various data, such as the V-T data for the PJ, the adjusting data for
factory shipment, various data for setting (user), and the logo and uniformity data.

2. Equipment to be used and operating environments

<Equipment to be used>
• Software for servicing adjustments (Ser_99vt.exe Ver1.0)
Attached files: V-T Data, etc.
• Personal computer [Enabled to actuate Windows95 or Windows3.1, and the serial port (COM1 or COM2 or
COM3) is of the D-SUB9pin.]
• Video signal generator [Auto-adjustment type: Enabled to generate an output of NTSC split color bars (7
colors)]
• Component signal generator [Auto-adjustment type: Enabled to generate an output of 15kHz Component
Video 60Hz split color bars (7 colors)]
• Serial cable (Accessory for the PJ main unit)
<Connections>
• Connect the PC CONTROL terminal (Mini DIN-8pin) of the PJ with either serial port COM1 or COM3 (D-SUB
9pin) of the personal computer through a serial cable (accessory for the PJ main unit).
• During the adjustment of RGB Sub-Brightness/Sub-Contrast, connect the RGB terminal of the PJ with an
ANALOG RGB output of the personal computer or an RGB signal generator to be used for adjusting signal
generation.
• During the adjustment of Component Sub-Brightness/Sub-Contrast, connect the RGB terminal of the PJ with
a Component signal generator to be used for adjusting signal generation.
• During the adjustment of Video Sub-Brightness/Sub-Contrast, connect the VIDEO terminal with a Video
signal generator to be used for adjusting signal generation.
<Setting of personal computer that generates adjusting pattern screen outputs>
• Personal computer's definition, frequency, and the No. of colors
Make settings at VESA XGA (1024x768) 70Hz, high color (16 bits) or above.
• Method of adjusting pattern screen display
Using the [ON] button located in the test pattern box, the adjusting pattern screen can be displayed on the
PC screen. In this case, however, only the test patterns in the [Sub-B/C] tab can be displayed. All other
adjusting patterns are the internally available test patterns.
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