A technician is troubleshooting a ceiling-mounted projector in a corporate conference room. Meeting participants report two specific issues: the projected image periodically cuts out completely for a few seconds before returning, and the image displayed on the screen appears trapezoidal (significantly wider at the top than at the bottom). Which of the following actions should the technician take to resolve these issues? (Select TWO.)
- Clean or replace the projector air filters and clear blocked ventilation pathways.Answer
- Adjust the projector keystone configuration settings or tilt position.Answer
- CReplace the high-voltage CCFL backlight inverter board inside the unit.
- DUpdate the host graphics card drivers to resolve aspect ratio geometry bugs.
Answer
The technician should clean or replace the projector's air filters to prevent thermal overload shutdowns and adjust the projector's keystone settings to eliminate trapezoidal image distortion.
Cleaning or replacing the projector air filter addresses thermal overload conditions that cause the projector to turn off its lamp intermittently to protect internal components. Adjusting the keystone settings compensates for physical angle offset between the projector lens and the screen, squaring the trapezoidal image.
Step-by-Step Solution
Key Concept
Projector Maintenance and Image Alignment