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Symptom Cause Solution
No image on Power switch is off or Computer must be on for
computer screen projector is not running computer monitor to display
Lamp is burned out Turn off projector;
replace lamp
Cable not connected Connect cable
Streaks on monitor Video cable plugged into Check computer- or
computer or projector projector-cable
is upside-down connections
Faint screen Low intensity Adjust BRIGHT (brightness)
and CONTRAST settings
Jittery, fuzzy letters Out of sync Adjust H. PHASE setting
Cannot get entire image Compatibility problems Verify projector is image
on screen; scrambled compatible with one of
image the standards listed in
Appendix A, Specifications
Shimmering colors H. PHASE or BRIGHT Adjust H. PHASE or BRIGHT
setting out of adjustment (brightness) settings
Colors weak in video Weak video signal Check for faulty video source,
mode (NTSC/PAL/S-VHS) bad connection, frayed cable
COLOR setting may be Adjust COLOR setting
too low
Getting excessive white CONTRAST setting Adjust CONTRAST setting,
or washout in NTSC, PAL too high then adjust BRIGHT
or S-VHS mode (brightness) setting
No audio Audio source(s) Check audio source(s) for
power ON and proper
operation
Loose/wrong cables Check and secure cables
between audio source(s) and
projector
Troubleshooting 53