Preventive Maintenance Schedules Flashcards

What should a technician check when performing preventive maintenance on a PoE switch that powers IP cameras?

Answer: Per-port power draw vs. rated PoE budget

Verifying per-port power consumption against the switch's PoE budget ensures no cameras are being under-powered or causing switch overload.

During a PM inspection, a technician notices a camera's image has a persistent blue tint. Which maintenance action should be taken first?

Answer: Check and recalibrate white balance settings

A color tint is often a white balance misconfiguration, which can be corrected through camera settings before hardware replacement is considered.

How should a maintenance technician document a camera that is functioning but has a partially obstructed field of view due to vegetation growth?

Answer: Log the obstruction, note required corrective action, and notify the site manager

Obstructions affecting coverage must be documented with recommended corrective action and communicated to the appropriate stakeholder for resolution.

A PM schedule includes testing video analytics such as motion detection. What is the best method to verify motion detection is working correctly?

Answer: Walk through the detection zone and confirm an alert is triggered

Physically walking through the detection zone while monitoring the system confirms that motion detection triggers correctly in real-world conditions.

Which factor most directly determines how frequently outdoor cameras in harsh environments should receive preventive maintenance?

Answer: Environmental exposure level such as dust, humidity, and temperature extremes

Harsh environmental conditions accelerate wear and contamination, requiring more frequent maintenance intervals than cameras in controlled indoor settings.

When inspecting cable conduit during a preventive maintenance visit, a technician finds water intrusion. What is the priority action?

Answer: Drain the conduit and seal entry points to prevent further moisture ingress

Water intrusion in conduit must be addressed by draining it and sealing the entry points to protect cables and connected equipment from corrosion and shorts.

A preventive maintenance plan specifies annual calibration of video management software (VMS) time synchronization. Why is this important?

Answer: To ensure accurate timestamps on recorded footage for evidentiary purposes

Accurate timestamps are critical for using surveillance footage as legal evidence, making time synchronization calibration a key maintenance task.