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.

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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