Troubleshooting Decision Trees
Pick the symptom you were dispatched on and work the path in order. Each tree is built to teach a logical sequence — cheapest and most likely checks first, escalation last.
What Are You Troubleshooting?
Select a symptom above to open its troubleshooting path. Steps can be tapped off as you work them.
Work the steps in order and write down what each one proved. Skipping ahead to the exciting tool is how technicians spend an hour on an OTDR to find a dirty connector.
These paths are general field reasoning aids. Your employer's methods, safety rules, and carrier procedures always take precedence.
Use this at the start of a trouble ticket, when you're stuck mid-call, or when training a newer tech on how to think through a fault instead of guessing.