On Call Maintenance
Diagnosis
The process of corrective maintenance begins with a failure and a diagnosis of the failure.
The diagnostic process can include a physical inspection of a system, the use of a diagnostic computer to evaluate the system, interviews with system users.
It is important to determine what caused the problem in order to take appropriate action.
Action
On site or by remote access. Inspection of the equipment to identify the reason for the failure and the action to be taken to eliminate or reduce the frequency of future similar failures.
Testing
The technician verifies that the fix has worked by testing the system.


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