94 IBM : Hardware Maintenance Manual
POST error codes
Each time you power-on the system, it performs a series of tests that check the
operation of the system and some options. This series of tests is called the Power-On
Self-Test, or POST. POST does the following operations.
• Checks some basic system-board operations
• Checks the memory operation
• Starts the video operation
• Verifies that the diskette drive is working
• Verifies that the hard disk drive is working
If the POST finishes without detecting any problems, a single beep sounds and the
first screen of the operating system or application program appears.
If the POST detects a problem, an error message appears on the screen. A single
problem can cause several error messages to appear. When you correct the cause of
the first error message, the other error messages probably will not appear on the
screen the next time you turn on the system.
In the following index, X can represent any number.
Note:
Type 2254, 2256, 2257, 6336, 6337, 6339, 6341, 6342, 6346, 6347, and 6348 computers default to
come up quiet (no beep and no memory count and checkpoint code display) when no errors
are detected by POST.
To enable beep and memory count and checkpoint code display when a successful POST
occurs, do the following:
1. Select Start Options in the Configuration/Setup Utility program (see “Setup Utility
program” on page 10).
2. Set Power-On Self-Test to Enhanced.
POST Error Code FRU/Action
000
SCSI Adapter not enabled
1. Verify adapter device and Bus Master
fields are enabled in PCI configuration
program. See documentation shipped
with computer.
02X 1. SCSI Adapter
08X
Check SCSI terminator installation.
1. SCSI Cable
2. SCSI Terminator
3. SCSI Device
4. SCSI Adapter
101
System board interrupt failure
1. System Board
102
System board timer error
1. System Board
106 1. System Board
110
System board memory parity error
1. Memory Module
2. System Board
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