IBM RS6000 - 7026 - H70, Service Manual

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MAP 1540: Minimum Configuration
Notes:
1. Be sure to unplug the power cable before removing or installing Service
Processor, CPU, System Card or I/O planar to avoid damage to them.
2. This MAP assumes that a CD-ROM drive is installed and connected to the
integrated SCSI adapter, and a Diagnostics CD-ROM is available.
3. If a power-on password or privileged-access password is installed, you are
prompted to enter the password before the diagnostic CD-ROM can load.
4. The term "POST indicators" refer to the icons (graphic display) or device
mnemonics (ASCII terminal) that appear 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 may wish to disable these actions
while you diagnose and service the system. If you disable them, you should
make notes of their current settings for restoration before you leave. Following
are the settings of your interest.
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.
Surveillance From the Service Processor Setup Menu, go to
the Surveillance Setup Menu and disable
surveillance.
Unattended Start 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.
Chapter 2. Maintenance Analysis Procedures
2-17