IBM 88643RU Service Guide - Page 103
Performing, checkout, procedure
UPC - 000435958211
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keyboard, mouse (pointing device), serial ports, and hard disk drives. You can also use them to test some external devices. If you are not sure whether a problem is caused by the hardware or by the software, you can use the diagnostics programs to confirm that the hardware is working correctly. v When you run the diagnostics programs, a single problem might cause several error messages. If you receive several error messages, correct the cause of the first error message. The other error messages might not occur the next time you run the diagnostics programs. v Before running the diagnostics programs, you must determine whether the failing server is part of a shared hard disk drive cluster (two or more servers sharing external storage devices). If it is part of a cluster, you can run all diagnostics programs except the ones that test the storage unit (that is, a hard disk drive in the storage unit) or the storage adapter that is attached to the storage unit. The failing server might be part of a cluster if any of the following conditions is true: - You have identified the failing server as part of a cluster (two or more servers sharing external storage devices). - One or more external storage units are attached to the failing server and at least one of the attached storage units is also attached to another server or unidentifiable device. - One or more servers are located near the failing server. Important: If the server is part of a shared hard disk drive cluster, run one test at a time. Do not run any suite of tests, such as "quick" or "normal" tests, because this might enable the hard disk drive diagnostic tests. v If the server is suspended and a POST error code is displayed, see "Error logs" on page 70. If the server is suspended and no error message is displayed, see "Problem isolation tables" on page 88 and "Solving undetermined problems" on page 156. v For information about power-supply problems, see "Solving power problems" on page 155 and "Power-supply LEDs" on page 108. v For intermittent problems, check the error log; see "Error logs" on page 70 and "Diagnostic programs, messages, and error codes" on page 110. Performing the checkout procedure To perform the checkout procedure, complete the following steps: 001 IS THE SERVER PART OF A CLUSTER? 002 No. Go to step 004 . 003 Yes. Schedule maintenance. Shut down all failing systems that are related to the cluster. Go to step 004 . 004 v Check the power supply LEDs, see "Power-supply LEDs" on page 108. v Turn off the server and all external devices. v Check all internal and external devices for compatibility at http://www.ibm.com/servers/eserver/serverproven/compat/us/. v Check all cables and power cords. v Set all display controls to the middle positions. v Turn on all external devices. v Turn on the server. Chapter 5. Diagnostics 87