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Chapter 5 • Troubleshooting
Problem | Likely Cause | Possible Solution(s) |
No image on | Power switch off or | Projector must be on for |
computer screen | projector not on | computer monitor to |
|
| display; turn on |
|
| projector. |
| Cable not connected | Connect cable |
| ||
Monochrome on | Computer was turned | Turn projector on and |
color monitor | on before projector | |
| Computer’s external | Set computer’s external |
| ||
| video port set | port to “color” |
| incorrectly |
|
Streaks on monitor | Video cable plugged | Check and |
| into computer is | connections |
|
| |
Faint screen | Low intensity | Adjust BRIGHTNESS and |
|
| CONTRAST |
Jittery, fuzzy letters | Out of sync | Adjust SYNC control |
Image | Position controls (arrow | Adjust position controls; |
| keys) | if image will not center, |
|
| check for compatibility |
|
| problems |
| Compatibility problems | Verify projector is image |
| ||
|
| compatible with one of |
|
| the standards listed in |
|
| Appendix A |
| Misalignment or damage | Projector requires |
| ||
| to optical elements | servicing |
Cannot get entire | Compatibility problems | Verify that the projector |
image on screen; |
| is image compatible with |
scrambled image |
| one of the standards |
|
| listed in Appendix A |
“Shimmering” colors | SYNC or BRIGHTNESS | Adjust SYNC or |
| out of adjustment | BRIGHTNESS |
No video image | Video source(s) | Check video source(s) |
projected |
| (composite or |
|
| for power ON and |
|
| proper operation |
| Loose/improper cabling | Check and secure cabling |
| ||
|
| between video source(s) |
|
| and projector |