Lenovo 6241, Инструкция по установке и обслуживанию

Страница: 162 / 1990

Checkout procedure
The checkout procedure is the sequence of tasks that you should follow to diagnose a problem in the server.
About the checkout procedure
This topic provides information about the server checkout procedure.
Before you perform the checkout procedure for diagnosing hardware problems, review the following
information:
• Before you begin, read “Safety” on page v and “Installation guidelines” on page 44.
• Dynamic System Analysis (DSA) provides the primary methods of testing the major components of the
server, such as the Ethernet controller, 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 diagnostic programs to confirm that the
hardware is working correctly.
• 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 error messages usually will not occur the next time
you run DSA.
If multiple error codes or light path diagnostics LEDs indicate a microprocessor error, the error might be in
the microprocessor or in the microprocessor socket. See “Microprocessor problems” on page 181 for
information about diagnosing microprocessor problems.
• Before you run diagnostic 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 diagnostic 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.
• If the server is halted and a POST error code is displayed, see Appendix D “UEFI/POST error codes” on
page 1925. If the server is halted and no error message is displayed, see “Troubleshooting by symptom”
on page 170 and “Solving undetermined problems” on page 195.
• For information about power-supply problems, see “Solving power problems” on page 194 and “Power-
supply LEDs” on page 158.
• For intermittent problems, check the event log; see “Event logs” on page 161 and Appendix B “DSA
diagnostic test results” on page 345.
148
System x3850 X6 and x3950 X6 Installation and Service Guide