IBM 300 Series 6268, Hardware Maintenance Manual

Page: 439 / 450

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.
Ÿ
Verify any recent hardware changes. See “Hardware
considerations” on page 430.
Ÿ
Verify any recent software changes. See “Software
considerations” on page 431.
Ÿ
Verify the BIOS is at the latest level. See “BIOS” on
page 431.
Ÿ
Verify the drivers are at latest levels. See “Drivers”
on page 431.
Ÿ
Verify the Configuration matches hardware. See
“System resource conflicts” on page 432.
Ÿ
Verify the Diagnostic diskette is at latest level. See
“File updates” on page 430.
As you go through problem determination, consider these
questions:
Ÿ
Do diagnostics fail?
Ÿ
What, when, where, single, or multiple systems?
Ÿ
Is the failure repeatable?
Ÿ
Has this configuration ever worked?
Ÿ
If it has been working, what changes were made prior
to it failing?
Ÿ
Is this the original reported failure?
Important
To eliminate confusion, systems are considered
identical only if they:
1. Are the exact machine type and model
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.
Related Service Information
429