IBM x3690 X5 Service Manual

Also see for System x3690 X5: Implementation guide Installation and user guide At-a-glance reference guide At-a-glance guide Manual

Checkout procedureThe checkout procedure is the sequence of tasks that you should follow todiagnose a problem in the server.About the checkout procedureBefore you perform the checkout procedure for diagnosing hardware problems,review the following information:v Read the safety information that begins on page “Safety” on page vii.v IBM Dynamic System Analysis (DSA) provides the primary methods of testingthe major components of the server, such as the system board, Ethernetcontroller, 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 whethera problem is caused by the hardware or by the software, you can use thediagnostic programs to confirm that the hardware is working correctly.v When you run DSA, a single problem might cause more than one error message.When this happens, correct the cause of the first error message. The other errormessages usually will not occur the next time you run DSA.Exception: If multiple error codes or light path diagnostics LEDs indicate amicroprocessor error, the error might be in the microprocessor or in themicroprocessor socket. See “Microprocessor problems” on page 58 forinformation about diagnosing microprocessor problems.v Before you run diagnostic programs, you must determine whether the failingserver is part of a shared hard disk drive cluster (two or more servers sharingexternal storage devices). If it is part of a cluster, you can run all diagnosticprograms except the ones that test the storage unit (that is, a hard disk drive inthe storage unit) or the storage adapter that is attached to the storage unit. Thefailing 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 serverssharing external storage devices).– One or more external storage units are attached to the failing server and atleast one of the attached storage units is also attached to another server orunidentifiable 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 testat 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 halted and a POST error code is displayed, see “POST errorcodes” on page 38. If the server is halted and no error message is displayed, see“Troubleshooting tables” on page 50 and “Solving undetermined problems” onpage 245.v For information about power-supply problems, see “Solving power problems”on page 244 and “Power-supply LEDs” on page 78.v For intermittent problems, check the event log; see “Event logs” on page 35 and“DSA messages” on page 82.48 System x3690 X5 Types 7147, 7148, 7149, and 7192: Problem Determination and Service Guide