IBM RS/6000 44P 270 Service Manual page 49

Symptom
The system POST indicators are displayed on
the system console; the system pauses and
then restarts. The term "POST indicators"
refers to the icons (graphic display) or device
mnemonics (ASCII terminal) that appear
during the power-on self-test (POST).
The system stops and POST indicators are
displayed on the system console. The term
"POST indicators" refers to the icons (graphic
display) or device mnemonics (ASCII
terminal) that appear during the power-on
self-test (POST).
The system stops and the message
"STARTING SOFTWARE PLEASE WAIT..." is
displayed on the ASCII terminal, or the boot
indicator
is displayed on a graphics terminal.
The system does not respond to the
password being entered, or the system login
prompt is displayed when booting in service
mode.
Action
Go to "Boot Problems/Concerns" on page 90.
Go to "MAP 1540: Minimum Configuration" on
page 50 to isolate the problem.
Go to Chapter 4, "Checkpoints", on page 71.
Verify that the password is being entered from
the ASCII terminal or keyboard defined as the
system console. If so, then the keyboard or its
controller may be faulty.
v If entering the password from the keyboard
which is attached to the system, replace the
keyboard. If replacing the keyboard does not
fix the problem, replace the I/O board. (See
note 4 on page 27.)
v If entering the password from a keyboard
which is attached to an ASCII terminal, use the
problem determination procedures for the
ASCII terminal. Make sure the ASCII terminal
is connected to S1. Replace the I/O board if
these procedures do not reveal a problem.
v If the problem is fixed, go to "MAP 410: Repair
Checkout" in the RS/6000 and Eserver
pSeries Diagnostics Information for Multiple
Bus Systems. If the problem persists, go to
"MAP 1540: Minimum Configuration" on
page 50 to isolate the problem.
Chapter 3. Maintenance Analysis Procedures
31