Troubleshooting - Sharp QA1150 Operation Manual

6. TROUBLESHOOTING
Before calling for service, please closely review the following troubleshooting information.
Problems:
(1) No image appears on the
QA-1150 display area.
(2) Display is off-centered or
flickering, certain images do
not appear on the display, or
the image appears distorted.
Possible Solution:
Make sure that the panel's AC adaptor is properly
connected.
Make sure that the RGB signal cable is properly
connected to both the computer and the panel.
Verify that the panel's power switch is set to the on
position.
Verify that the computer's RGB signal output is
compatible with the QA-1150's specifications. (See
specifications on pages 39-49.)
Verify that the RGB signal level is appropriate for
your software.
Check that the unit is not in clear mode. (Main unit
and remote control unit)
Check that the computer or video input selection is
correct.
If using a Laptop computer, check the computer's
operation manual for external monitor hook up.
Verify that the video source has power.
Verify that the video source has tape or disc.
Verify that the computer's RGB signal output is
compatible with the QA-1150's specifications. (See
specifications on pages 39-49.)
Verify that the RGB signal level is suitable to your
software.
Press reset.
Adjust horizontal and vertical to center image.
Adjust analog level and phase.
If the projected image flickers when using analog
signals, adjust the contrast. Also try switching
between the 512-color mode and the 185,000-color
mode.
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