5-2
Chapter Five
PROBLEM
LIKELY CAUSE
POSSIBLE SOLUTION(S)
Displayed image
Projector not placed at a
Adjust position of the
not square
proper angle to projection
projector and the screen.
(keystoning)
screen.
Use the Keystone Adjustment
lever.
Projected image
Projection lens not focused.
Adjust the focus.
out of focus
Projected image
Projector too far from screen. Move projector closer to screen.
larger than screen
Projected image
Projector too close to screen. Move projector away from
smaller than screen
screen.
No image on the
Power switch off or
Computer must be on for
monitor
projector not running.
computer monitor to display.
Turn on projector and light the
lamp.
Cable not connected.
Connect cable.
Faint screen
Low CONTRAST or
Adjust CONTRAST and/or
BRIGHTNESS settings.
BRIGHTNESS.
Jittery, fuzzy text
Out of sync.
Adjust SYNC.
Image off-center
Position controls (arrow keys). Adjust position controls.
Compatibility problem.
Make sure the projector is
compatible with one of the
standards listed in Appendix A.
Misalignment or damage to
Projector requires service.
optical elements.
Cannot get entire
Compatibility problems.
Make sure the projector is
image on screen;
compatible with one of the
scrambled image
standards listed in Appendix A.
Wrong video resolution.
Set video resolution on
computer to 640 x 480.
“Shimmering” colors SYNC out of adjustment.
Adjust SYNC.
Colors weak
Weak video signal.
Check for faulty video source,
bad connection, or frayed cable.
