IBM P 615 series, Service Manual, Page: 133 / 491

MAP 1548: Processor Subsystem Problem Isolation
Notes:
1. Be sure to unplug the power cords before removing or installing processor cards or the system
backplane to avoid damage to it.
2. This MAP assumes that a CD-ROM drive is installed and connected to the integrated EIDE adapter,
and a diagnostic CD-ROM disc is available.
3. If a power-on password or privileged-access password is set, you are prompted to enter the password
before the diagnostic CD-ROM can load.
4. The term POST indicators refers to the device mnemonics that appear during the power-on self-test
(POST).
5. The service processor might have recorded one or more symptoms in its error log.
v If you arrived here after performing a slow boot, look for a possible new error that occurred during
the slow boot. If there is a new error, and its actions call for a FRU replacement, perform those
actions. If this does not resolve the problem, go to “Step 1548-1” on page 114.
v If an additional slow boot has not been performed, or if the slow boot did not yield a new error code,
look at the error that occurred just before the original error. Perform the actions associated with that
error. If the problem is not resolved, go to“Step 1548-1” on page 114.
v
If a slow boot results in the same error code, and there are no error codes before the original error
code, go to “Step 1548-1” on page 114.
It is a good idea to examine that error log before proceeding (see “System Information Menu” on page
238).
6. The service processor might have been set by the user to monitor system operations and to attempt
recoveries. You might want to disable these actions while you diagnose and service the system. If you
disable them, make notes of their current settings so that you can restore them before you leave. The
following settings may be of interest to you.
Surveillance From the Service Processor Setup Menu, go to the
Surveillance Setup Menu and disable surveillance.
Unattended Start Mode From the Service Processor System Power Control Menu,
disable unattended start mode.
Reboot Policy From the System Power Control Menu, go to the
Reboot/Restart Policy Setup Menu and set:
1. Number of reboot attempts to 0 (zero)
2. Use OS-Defined restart policy to No
3. Enable supplemental restart policy to No .
Call Out From the Call-In/Call-Out Setup Menu, go to the Serial
Port Selection Menu and disable call-out on both serial
ports.
7. Verify that the system has not been set to boot to the SMS menus or to the open firmware prompt.
From the System Power Control Menu, select Boot Mode Menu . Verify that all four options are set to
disabled.
Purpose of this MAP
This MAP is used to locate defective FRUs not found by normal diagnostics. For this procedure,
diagnostics are run on a minimally configured system. If a failure is detected on the minimally configured
system, the remaining FRUs are exchanged one at a time until the failing FRU is identified. If a failure is
not detected, FRUs are added back until the failure occurs. The failure is then isolated to the failing FRU.
Chapter 3. Maintenance Analysis Procedures (MAPs)
113