Performing Slow Boot; Confirming Initial Error Code - IBM F80 Service Manual

Table 3. Checkpoint and Error Code Index (continued)
Checkpoint or Error What You Should Do
Code
Mxxx xxxx Problem Determination-Generated Error Codes
Go to "Problem Determination-Generated Error Codes" on page 247, and follow the
instructions in the More General Error Code table.

Performing Slow Boot

On this system, the error code displayed in the operator panel may not indicate the root
cause of the problem. To fully analyze all of the available information, perform the
following steps before doing a hardware repair or replacement:
1. Record the 8-character error code (and location code if present) in operator panel.
2. Do a slow-mode boot to the SMS menus. This can be specified using the System
Power Control Menu on the service processor main menu. (A fast-mode boot skips
much of the built-in diagnostic testing.) A slow-mode boot may yield a new
8-character error code on the operator panel and new errors in the service
processor error log. If a new error code is reported, use it in subsequent steps to
continue problem analysis. If the system hangs with the same error code, continue
with the next step in the Checkpoint and Error Code Index. If no 8-character error
code is displayed on the operator panel, use the original error code and continue
with the next step in the Checkpoint and Error Code Index.

Confirming Initial Error Code

The service processor may have recorded one or more symptoms in its error log. If the
system has attempted to boot since an error terminated normal operation, there may be
specific fault information in the service processor error log. Examine this error log
before proceeding (see "System Information Menu" on page 264).
In the service processor error log, the most recent error is at the top of the list and the
oldest error is at the bottom. Examine the time stamp associated with each error. (The
time stamps in the service processor error log reflect coordinated universal time (CUT),
which is also referred to as Greenwich mean time.)
Find the error code in the service processor error log that directed you to this note. (If
the error code is not in the error log, perform the service actions for the error code that
was first reported.) Examine the time stamps to look for a group of failures that
happened within minutes prior to this error code. In this group, start at the error code
with the earliest time stamp. To get a list of possible FRUs, select the detail screen for
each error code and perform the listed repair actions. If the repair actions for an error
code are ineffective, continue to work upward through this group of error codes (which
is forward in time from the earliest time stamp to the latest) until the problem is fixed, or
you reach the error code that was first reported. If the system is still not fixed, go to
"MAP 1540: Minimum Configuration" on page 57.
Chapter 5. Error Code to FRU Index
107