CTS AV System Troubleshooting and Maintenance

Question 1

When troubleshooting an AV system with no video on a display, what should be checked FIRST?

Accepted Answer

Verify that the source device is powered on and outputting the correct signal format

Answer

Replace the display immediately

Answer

Adjust the room lighting

Answer

Check the audio system

Question 2

What is a 'preventive maintenance' schedule in an AV context?

Accepted Answer

A regular schedule of inspections, cleaning, firmware updates, and testing to prevent failures before they occur

Answer

A plan for replacing equipment only after it fails

Answer

A log of past repairs

Answer

A budget plan for future AV upgrades

Question 3

A projector in a conference room is displaying a green tint on all content. What is the most likely cause?

Accepted Answer

One of the RGB channels (red or blue) has a signal or lamp issue

Answer

The audio system is interfering with the video

Answer

The room is too bright

Answer

The HDMI cable is too long

Question 4

During a post-installation test, audio is heard from only one side of a stereo speaker system. What is the MOST likely cause?

Accepted Answer

A wiring fault, incorrect channel assignment, or failed component on the silent channel

Answer

The amplifier is too powerful

Answer

The room acoustics are poor

Answer

The source file is corrupted

Question 5

What tool is most useful for testing continuity and verifying correct pinout of an AV cable?

Accepted Answer

Cable tester or multimeter

Answer

Oscilloscope

Answer

Signal generator

Answer

Spectrum analyzer

Question 6

What is 'image retention' (burn-in) on a display, and how is it prevented?

Accepted Answer

Permanent or semi-permanent image ghosting caused by displaying static content too long, prevented with screen savers or auto-shutoff

Answer

Overheating of the display panel, prevented by adding cooling fans

Answer

Incorrect color calibration, corrected by adjusting brightness

Answer

Dust buildup on the lens, removed by cleaning