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4.3.2. Integrated Troubleshooting Scenario: The Unreliable Network Printer
š” First Principle: A single symptom can have roots in multiple domains (Hardware, Network, Software). A technician must systematically test and eliminate each domain to find the true cause.
Scenario: A user in the accounting department reports they cannot print to the "Acct-LJ400" network laser printer. They say "it was working yesterday." No one else has reported an issue yet.
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Reflection Question: If you can successfully ping the printer from the user's PC, but print jobs still fail, which domains have you effectively eliminated, and what becomes your primary theory of probable cause?