IBM 689912U Hardware Maintenance Manual - Page 461

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. Verify any recent hardware changes. See "Hardware Considerations" on page 452. Verify any recent software changes. See "Software Considerations" on page 453. Verify the BIOS is at the latest level. See "BIOS" on page 453. Verify the drivers are at latest levels. See "Drivers" on page 453. Verify the Configuration matches hardware. See "System Resource Conflicts" on page 454. Verify the Diagnostic diskette is at latest level. See "File Updates" on page 452. As you go through problem determination, consider these questions: 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? 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. Reference Information 451