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MAP 1540: Minimum Configuration
Note: If you were sent to this MAP from the Diagnostics Information for Multiple Bus
Systems as a result of an SRN 101-xxx problem, go to “Fxx Code Boot
Problems” on page 3-18 and follow the instructions there before using the
MAP 1540 steps.
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.
Notes:
1. This MAP assumes that a CD-ROM drive is installed and connected to the
integrated SCSI adapter, and a Diagnostics CD-ROM disc is available.
2. If a power-on password or privileged-access password is installed, you are
prompted to enter the password before the diagnostic CD-ROM loads.
3. The term "POST indicators" refer to the icons (graphic display) or device
mnemonics (ASCII terminal) that appear during the power-on self-test (POST).
Because the minimum configurations for the Model 140 and Model 240 differ, this
MAP is divided into 1540A for the Model 140 and 1540B for the Model 240.
MAP 1540A: Minimum Configuration (for the Model 140 and Model 150) begins
on 2-22.
MAP 1540B: Minimum Configuration (for the Model 240) begins on 2-39.
Chapter 2. Maintenance Analysis Procedures (MAPs) 2-21