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Problem determination tips
Due to the variety of hardware and software combinations that can be encountered,
use the following information to assist you in problem determination. If possible,
have this information available when requesting assistance from Service Support and
Engineering functions.
• Machine type and model
• Processor or hard disk upgrades
• Failure symptom
— Do diagnostics fail?
— What, when, where, single, or multiple systems?
— Is the failure repeatable?
— Has this configuration ever worked?
— If it has been working, what changes were made prior to it failing?
— Is this the original reported failure?
• Reference/Diagnostics version
— Type and version level
• Hardware configuration
— Print (print screen) configuration currently in use
— BIOS level
• Operating system software
— Type and version level
Note: To eliminate confusion, identical systems are considered identical only if they:
1. Are the exact machine type and models
2. Have the same BIOS level
3. Have the same adapters/attachments in the same locations
4. Have the same address jumpers/terminators/cabling
5. Have the same software versions and levels
6. Have the same Reference/Diagnostics Diskette (version)
7. Have the same configuration options set in the system
8. Have the same setup for the operation system control files
Comparing the configuration and software set-up between "working and non-
working" systems will often lead to problem resolution.
Notices
References in this publication to IBM products, programs, or services do not imply
that IBM intends to make these available in all countries in which IBM operates. Any
reference to an IBM product, program, or service is not intended to state or imply that
only that IBM product, program, or service may be used. Subject to IBM’s valid
intellectual property or other legally protectable rights, any functionally equivalent
product, program, or service may be used instead of the IBM product, program, or
service. The evaluation and verification of operation in conjunction with other
products, except those expressly designated by IBM, are the responsibility of the user.