AIX 5L Problem Determination - IBM Redbooks

LED 299
A LED code of 299 shows that the BLV will be loaded. If this LED code is passed,
then the load has been successful. If, after passing 299, you get a stable 201,
then you have to recreate the BLV.
MCA LED codes
Table 4-2 provides a list of the most common LED codes on MCA systems. More
of these can be found in the AIX Version 4 base documentation.
Table 4-2 Common MCA LED codes
LED Description
100–195 Hardware problem during BIST.
200 Key mode switch in secure position.
201 If LED 299 passed, recreate BLV.
If LED 299 has not passed, POST encountered a hardware error.
221
721
221–229
223–229
225–229
233–235
4.3.6 888 in the three-digit display
The bootlist in NVRAM is incorrect (boot from media and change
the bootlist), or
the bootlist device has no bootimage (boot from media and
recreate the BLV), or
the bootlist device is unavailable (check for hardware errors).
A flashing 888 indicates that a problem was detected, but could not be displayed
on the console. A message is encoded as a string of three-digit display values.
The 888 will be followed by either a 102, 103, or 105. The Reset button is used to
scroll the message.
The 102 code
A 102 indicates that a dump has occurred and your AIX kernel crashed due to
component failure. A LED code description is provided in the following list:
► 888 - This value flashes to indicate a system crash.
► 102 - This value indicates an unexpected system halt.
► nnn - This value is the cause of the system halt (reason code).
► 0cx - The value 0cx indicates dump status.
58 IBM ^ Certification Study Guide - AIX 5L Problem Determination Tools and Techniques