InFocus HDTV Receiver - Manual (Page 7)

Common Issues
SYMPTOMS: Light bar rolling from bottom to top
Solution: This is probably a ground loop issue. Ground loop effects
are caused by a differential in the power between the source and
projector. The solution is to ground the source and projector. Use a
ground loop isolator and/or plug both the source and projector to the
same power outlet.
A rolling bar can also be caused by poorly shielded cabling. Make sure
you use quality cables
SYMPTOMS: Static, noise, or video artifacts in video image
Solution: Usually you can eliminate a lot of video defects by using
high quality cable in as short a length as possible. For the best results,
we recommend using DVI or component cables with the projector.
Composite and S-video cables do not support high definition and
produce lower quality video. Try to keep cable length to less than 10
feet. If the setup requires a longer cable, make sure to use the thicker,
well-shielded cables.
SYMPTOMS: No video image from the projector
Solution:
•
Check the coaxial cable connection to the HDTV box.
Typically, there are two coax connections on an HDTV
receiver: To TV and Cable In. Make sure the cable is securely
connected to the Cable In port.
•
Make sure the projector is searching the correct input (see the
projector user’s guide). If Auto Source is turned off, you need
to manually change the source that the projector is searching.
Press the Auto Source or Video button the projector keypad or
remote.
•
Try a different video cable. The cable may be defective.
•
Some video ports do not accept progressive signals. Refer to
connectivity chart on the Service and Support web site.
SYMPTOMS: Image is not perfectly rectangular (keystoning)
Solution: When a projected image is wider at the top or the bottom
(horizontal keystoning), or taller on the right or left side (vertical
keystoning), the projector is not perpendicular to the screen, either in
the vertical plane or the horizontal plane.
If the sides are angled, then you need to raise or lower the front of the
projector. Also, most projectors have digital vertical keystone
correction that you can adjust in the projector menu. If the top and
bottom of the image are angled, then you need to rotate the projector
left or right until the image is rectangular. Most projectors do not have
digital horizontal keystone correction.
SYMPTOMS: Image proportion is incorrect
(i.e. people appear too tall or too short)
Solution: The aspect ratio is set incorrectly on the projector and/or the
HDTV receiver. Make sure the projector and HDTV receiver aspect
ratio are the same. In the projector menu, you can adjust the aspect
ratio. In the HDTV receiver menu, you can adjust the aspect ratio.
SYMPTOMS: Sound is too soft from projector speakers
Solution: We recommend connecting the HDTV receiver to a home
theater audio receiver or amplifier to receive a more robust and quality
audio experience. The speakers on the projector are meant for very
small spaces.
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