Chapter Description; Diagnostic Information; Using The Check Procedures - IBM Aptiva Series Hardware Maintenance

Chapter Description

This chapter contains general information about the contents of this manual,
product descriptions, and other information useful when servicing the product.

Diagnostic Information

The diagnostic information contains the check procedures you use to
diagnose and isolate product failures. Diagnostic information consists of:
Start:
This is the starting point for any diagnostic action. Based on high-level
symptoms, the information in this check procedure directs you to more
detailed procedures to help you resolve the machine failure.
Symptoms, Messages, Error Codes, and Beeps:
The Index of Symptoms, Messages, Error Codes, or Beeps lists symptoms
and their probable causes, and directs you to the applicable check
procedures to help you resolve the machine failure. The index also lists
which FRU is the likely cause of the problem.
Check Procedures:
When the Start check procedure sends you to a specific check procedure
or the Index of Symptoms, Messages, Error Codes, or Beeps, turn to that
section and perform the steps as instructed. If there are any notes or
instructions at the top of the page, read them before you start the
procedure. Carefully read each step of the check procedure and perform
the appropriate action as instructed. If you do not remember the location of
a specific part or test point, or if you do not remember an adjustment or
removal procedure, see the chapter with that information. Always return to
the check procedure after you do this. In some cases, you are sent to
other check procedures to find the failure.
Diagnostic Aids:
The Diagnostic Aids chapter contains additional information to help you
diagnose a failure of a specific part.

Using the Check Procedures

Failing Parts or Assemblies : The check procedures generally help you trace
a problem to one part or assembly. The last step of the specific check
procedure you are using indicates that a part or assembly is failing. You
should inspect the part or assembly before you decide to replace it. It might be
loose, dirty, or in need of a small repair. The check procedures might lead you
to two, or even three, possible failing parts or assemblies. The parts that might
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