Problem Solving and Troubleshooting Flashcards
7 cards from real CAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Problem Solving and Troubleshooting flashcards as text
A console channel with a condenser microphone produces no signal even though phantom power is enabled. Swapping to a known-good mic on the same channel works. The most likely fault is:
Answer: Damaged microphone or its internal electronics
When a replacement mic works on the same channel, the fault is isolated to the original microphone's internal components.
You are troubleshooting a system where the left and right channels are reversed at the main speakers. The console output is correct. Where is the most likely wiring error?
Answer: In the speaker cable runs or amplifier input patch
When the console output is verified correct, a left-right swap at the speakers indicates a wiring reversal in the cable runs or amplifier input connections.
During an outdoor event, the sound system performs well until temperature drops significantly, after which audio becomes intermittent. The most likely cause is:
Answer: Cold-induced connector contact failure or cracked solder joints
Cold temperatures cause metals to contract, leading to intermittent contact in connectors or stress-cracked solder joints.
A room's reverb time is causing intelligibility problems. The system DSP has already been optimized. What is the most effective remaining solution?
Answer: Add acoustic treatment to reduce room reflections
When DSP optimization is exhausted, the only way to reduce problematic reverb is to add acoustic absorption or diffusion materials to the room.
An amplifier repeatedly shuts down after several minutes of operation. The fan is running but the heatsink is extremely hot. What is the cause?
Answer: Thermal protection activating due to inadequate cooling airflow
Repeated thermal shutdown with an extremely hot heatsink and running fan indicates blocked airflow or insufficient rack ventilation preventing adequate heat dissipation.
You suspect a pin 2 vs pin 3 polarity reversal in an XLR cable. Which test most efficiently confirms this?
Answer: Use a polarity tester or cable tester that checks pin continuity and mapping
A dedicated cable tester maps each pin's continuity and identifies wiring reversals quickly without relying on subjective listening tests.
A digital audio network experiences random dropout events logged as 'priority errors' by the system. The most likely cause is:
Answer: Network switch not configured for audio quality of service (QoS) prioritization
Audio-over-IP systems require QoS configuration on network switches to prioritize audio packets; without it, dropouts occur when other traffic competes.