Map 1540: Minimum Configuration - IBM RS/6000 Enterprise Server M80 Service Manual

MAP 1540: Minimum Configuration

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.
Notes:
1. Be sure to unplug the power cable from the rack that contains the CEC drawer, the primary I/O drawer,
and any secondary I/O drawer before removing or installing CPU card(s), memory cards, CEC
backplane, or I/O drawer backplane to avoid damage.
2. This MAP assumes that a CD-ROM drive is installed and connected to the internal SCSI adapter of the
primary I/O drawer, and a diagnostic CD-ROM is available.
3. If a general-access password or privileged-access password is installed, you are prompted to enter the
password before the diagnostic CD-ROM can load.
4. POST indicators refers to the device mnemonics (words memory, keyboard, network, scsi, and speaker)
that appear on the system console during the power-on self-test (POST).
5. The service processor may have recorded one or more symptoms in its error log. It is a good idea to
examine that error log before proceeding (see service processor System Information Menu).
6. The service processor may have been set by the user to monitor server operations and to attempt
recoveries. You can 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 easily. The following table lists
the settings:
Surveillance
Unattended Start
Reboot Policy
Call Out
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Service Guide
From the service processor Setup Menu, go to the
Surveillance Setup Menu and disable surveillance.
From the service processor System Power Control Menu,
disable unattended start mode.
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.
From the Call-In/Call-Out Setup Menu, go to the Serial
Port Selection Menu and disable call-out on both serial
ports.