Power-On Self-Test (Post); Post Error Codes - IBM 6643 - NetVista X40 - 128 MB RAM User Manual

• If the failure occurred immediately after you made a change to the
configuration, verify that you selected the correct settings.

Power-on self-test (POST)

Each time you turn on your computer, it automatically performs a series of tests
that check the basic operation of the base computer. This series of tests is called
the power-on self-test (POST).
POST does the following:
• Checks basic system board operations
• Checks the memory operation
• Compares the current system configuration with that established by the
Configuration/Setup Utility program
• Starts the video operation
• Verifies that the diskette drives are working
• Verifies that the hard disk drive and the CD-ROM or DVD-ROM drive are
working
POST error codes are displayed when POST detects problems with or changes to
the hardware configuration during startup. POST error messages are 3-, 4-, 5-, 8-,
or 12-character alphanumeric messages and include brief explanations.

POST error codes

The computer might display more than one error message. Often, the first error to
occur causes subsequent errors. When using the POST message charts in this
section, always begin by following the suggested action for the first error message
that is displayed. Note that, in these tables, x can be any alphanumeric character.
Code Description
101 Interrupt failure
102 Timer failure
106 System board failure
114 External ROM checksum error
129 Level 1 cache error
131 POST detected a system board
voltage out of range
135 Microprocessor fan failure
151 Real time clock failure
Action
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Have the computer serviced.
Chapter 6. Troubleshooting
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