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Solving Problems
Chapter 2. Solving Problems
The S/390 Integrated Server uses many of the 10SP adapters and devices. These faults can be
diagnosed using the standard S/390 Integrated Server maintenance package.
1. Verify the correct operation of the S/390 Integrated Server using the appropriate procedures. This
includes:
• Visual checks
• Examine Error Logs
• Running Diagnostics.
2. If the customer nas a reported problem with a specific component, run its diagnostics first.
3.
If no problems are found, run the P/390 diagnostics. Refer to "Diagnostics" on page 8 for the
procedures.
4. If the P/390 diagnostics do not detect a problem, view the P/390 error log. Refer to "P/390 Error
Logs" on page 218 for the procedures.
The 10SP can detect FRU errors and notify the customer that the machine requires service. The
identification of failing power FRUs will be by service lights, as well as the Power Monitoring application.
Isolation of PCI devices will be by error messages and FRU replacement. All Service will be via hardcopy
procedures.
OS/2 Problems
The S/390 Integrated Server I/O subsystem is based on a customized OS/2. If any programs are added to
OS/2 that are not part of the Integrated Server product, these applications can affect both the performance
and reliability of your S/390 I/O.
If you have added new applications and then experience any problems, first stop running the applications
while the P/390 is IPLed, to see if the problems cease. If the problems persist, then try uninstalling the
applications. If you still have problems, then contact your IBM Business Partner; your C: drive may have
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to be formatted and reloaded.
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Sequence of events from a power up
The following MAP is the sequence of events with visual indicator of what happens in each step and if
abnormal condition a 'Go to' within the Service Guide that would aid in the problem solving process.
Power up sequence is:
• Power On, and Hardware Resets
• Phase 1 POST tests.
• Phase 2 POST tests.
• Adapter BIOS Loads (bottom to top)
• Search for bootable device, floppy then CD-ROM then SSA Disk.
Should find OS/2 on SSA Disk.
• Load OS/2 device drives from config.sys.
© Copyright IBM Corp. 1999
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