IBM RS/6000 7043 43P Series, Service Manual

Page: 47 / 273

Symptom Action
The system POST indicators are displayed on
the system console, the system pauses and
then then restarts. The term "POST indicators"
refer to the icons (graphic display) or device
mnemonics (ASCII terminal) that appear during
the poweron selftest (POST). If you are working on a Model 140 or Model
240, go to “Fxx Code Boot Problems” on
page 3-18. If you are working on a Model 150,
go to “Boot Problems/Concerns” on page 4-28.
The system stops and POST indicators are
displayed on the system console. The term
"POST indicators" refer to the icons (graphic
display) or device mnemonics (ASCII terminal)
that appear during the power-on self-test
(POST). Go to “MAP 1540: Minimum Configuration” on
page 2-21. to isolate the problem.
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.
Go to “Firmware Checkpoints” on page 3-14.
The system does not respond to the password
being entered or the system login prompt is
displayed when booting in service mode. Verify that the password is being entered from a
keyboard or ASCII terminal defined as the
system console. If so, then the keyboard or its
controller may be faulty.
1. If the password is being entered from a
keyboard attached to the system, replace
the keyboard. If that does not fix the
problem, replace the system board. See
notes on page 2-1.
2. If the password is being entered from an
ASCII terminal use the Problem
Determination Procedures for the ASCII
terminal. Make sure the ASCII terminal is
connected to S1. Replace the system board
if these procedures do not reveal a problem.
No codes are displayed on the operator panel
within a few seconds of turning on the system.
The operator panel is blank before the system is
powered on. Reseat the operator panel cable. If the problem
is not resolved, replace these parts in the
following order:
1. Operator Panel Assembly. Update the VPD
information in the new operator panel.
2. Riser card (Model 240 only).
3. System board (See notes on page 2-1)
The power LED on the operator panel comes on
and the system powers on automatically when
A/C power is applied. Automatic power-up is a feature on all models of
the 7043 43P series. Refer to the System
Board Jumper Settings for your model in
Chapter 1 for the correct settings. If the jumper
is set in the disabled position, replace the
system board,
Chapter 2. Maintenance Analysis Procedures (MAPs)
2-5