IBM 8651RM0 Hardware Maintenance Manual - Page 13

General Checkout - computers

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General Checkout This general checkout procedure is for IBM Netfinity 7000 Type 8651 computers. Diagnostic error messages appear when a test program finds a problem with a hardware option. For the test programs to properly determine if a test Passed, Failed, or Aborted, the test programs check the error-return code at test completion. General error messages appear if a problem or conflict is found by an application program, the operating system, or both. For an explanation of these messages, refer to the information supplied with that software package. A failed system might be part of a shared DASD cluster (two or more systems sharing the same external storage device(s)). Prior to running diagnostics, verify that the failing system is not part of a shared DASD cluster. A system might be part of a cluster if: The customer identifies the system as part of a cluster. One or more external storage units are attached to the system and at least one of the attached storage units is additionally attached to another system or unidentifiable source. One or more systems are located near the failing system. If the failing system is suspect to be part of a shared DASD cluster, all diagnostic tests can be run except diagnostic tests which tests the storage unit (DASD residing in the storage unit) or the storage adapter attached to the storage unit. Notes 1. For systems that are part of a shared DASD cluster, one test at a time in looped mode. Do not run all tests in looped mode, as this could enable the DASD diagnostic tests. 2. If multiple error codes are displayed, diagnose the first error code displayed. 3. If the computer hangs with a POST error, go to the "Symptom-to-FRU Index" on page 156. 4. If the computer hangs and no error is displayed, go to "Undetermined Problems" on page 168. 5. Power Supply problems, see "Status Indicators" on page 18. 6. Safety information, see "Safety Information" on page 180. 7. For intermittent problems, check the error log; see, "Error Log" on page 8. IBM Netfinity 7000 - Type 8651 5

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General Checkout
This general checkout procedure is for IBM Netfinity 7000 -
Type 8651 computers.
Diagnostic error messages appear when a test program
finds a problem with a hardware option.
For the test
programs to properly determine if a test
Passed
,
Failed
, or
Aborted
, the test programs check the error-return code at
test completion.
General error messages appear if a problem or conflict is
found by an application program, the operating system, or
both.
For an explanation of these messages, refer to the
information supplied with that software package.
A failed system might be part of a shared DASD cluster
(two or more systems sharing the same external storage
device(s)).
Prior to running diagnostics, verify that the
failing system is not part of a shared DASD cluster.
A system might be part of a cluster if:
The customer identifies the system as part of a
cluster.
One or more external storage units are attached to
the system and at least one of the attached storage
units is additionally attached to another system or
unidentifiable source.
One or more systems are located near the failing
system.
If the failing system is suspect to be part of a shared
DASD cluster, all diagnostic tests can be run except
diagnostic tests which tests the storage unit (DASD
residing in the storage unit) or the storage adapter
attached to the storage unit.
Notes
1.
For systems that are part of a shared DASD
cluster, one test at a time in looped mode.
Do
not run all tests in looped mode, as this could
enable the DASD diagnostic tests.
2.
If multiple error codes are displayed, diagnose
the first error code displayed.
3.
If the computer hangs with a POST error, go to
the “Symptom-to-FRU Index” on page
156.
4.
If the computer hangs and no error is displayed,
go to “Undetermined Problems” on page
168.
5.
Power Supply problems, see “Status Indicators”
on page
18.
6.
Safety information, see “Safety Information” on
page 180.
7.
For intermittent problems, check the error log;
see, “Error Log” on page
8.
IBM Netfinity 7000 - Type 8651
5