How to Use a Symptom-to-FRU Index

How to Use a Symptom-to-FRU Index

Always start with the General Checkout procedure. In the MAP, you might be sent to the Symptom-to-FRU Index. There, you will find a list error symptoms, error codes, and the possible causes. The most-likely is always listed first.

Another use for the Symptom-to-FRU Index is to help you decide which FRUs to bring with you on a service call. Try to get the customers POST error, or error symptom from the dispatcher.

The MAP can send you to the Symptom-to-FRU Index under various conditions. Listed below are the actions to take for most conditions.

Symptom / Response Information / Action
POST Error
(except I999 range)
Use the first error that appears on the screen. If multiple error
codes appear, diagnose them in the order that they appear (the multiple
errors might be false errors).
POST Error in the
I999XXXX Range
Refer to 'IML and IPL Errors'
Any POST Error Plus an
Incorrect Audio Response
Diagnose the error code first.
No POST Error Refer to 'Symptoms' in the Index
System Starts Up in BASIC Refer to 'IML and IPL Errors'
Error Range is Not Listed An additional service package is required for the device generating the
error. Refer to that service package.

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