Functional Tests - Toshiba TDP-MT8 Service Manual

Functional Tests

You perform the functional tests after you've repaired the projector to make sure all components of the
projector operate properly. You can also perform the functional tests if you're having trouble determining
what is wrong with the projector. For additional help in diagnosing trouble with the projector, see
Troubleshooting on page 68.
Required equipment
Equipment
Composite video DVD player
with S-video capability
Commercially produced video to
test S-video, composite video,
and audio.
Audio & Video cables
Computer cables
Trigger cable
RGB test screens in a
PowerPoint presentation
PC with digital video and sound
card
TDP-MT8 Service Guide
Notes
Make sure the video player has an S-video Out port and cables. The
player should also have a Composite video output port (RCA). Use a
DVD player to test the video quality. DVD players reproduce colors
better and project sharper images. The least preferable is a VCR. If
you must use a VCR, make sure you use a commercially produced
recording, not one recorded from a broadcast source. The VCR must
include an S-video connector in addition to a composite connector.
You'll need the video in DVD, laser disc, or videocassette format. Use
Video Essentials, Optimizing Your Audio/Video System (DVD
International, 1997) available at
http://www.infocus.com/service/asc/lp530/english/tests_ve.asp
Use the Digital Video Interface (DVI) cable, and composite and
component video cables.
M1-A and M1-DA cables for both analog and digital playback.
HD15 VESA cable for analog video playback.
Cable should have a 3.5mm mini-plug to test the projector's 12V
trigger outputs.
Use downloadable test patterns to check image quality.
(http://www.infocus.com/service/software/downloads/test_screens.exe)
Make sure the card has an M1 Digital Video Interface (DVI) output
port. The computer must have a CD-ROM and a standard VESA
connector for analog output.
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