IBM F80 Service Manual page 64

Symptom
All of the system POST indicators are displayed
on the system console, the system pauses and
then restarts. The term POST indicators refers
to the device mnemonics that appear during the
power-on self-test (POST).
The system stops and all of the POST
indicators are displayed on the system console.
The term POST indicators refers to the device
mnemonics that appear during the power-on
self-test (POST).
The system stops and the message
"STARTING SOFTWARE PLEASE WAIT..." is
displayed on the system console.
The system does not respond to the password
being entered, or the system login prompt is
displayed when booting in service mode.
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.
46
Service Guide
Action
Go to "Boot Problems and Concerns" on
page 102.
Go to "MAP 1540: Minimum Configuration" on
page 57 to isolate the problem.
Go to "Firmware Checkpoints" on page 91.
1. If the password is being entered, or the
service mode boot is being initiated on a
keyboard attached to the system, then the
keyboard or its controller may be faulty. In
this case, replace these parts in the
following order:
a. Keyboard
b. System planar, Location: P1
2. If the password is being entered, or the
service mode boot is being initiated from an
ASCII terminal, first ensure that the terminal
is connected to S1 or S2, then use the
problem determination procedures for the
ASCII terminal.
3. If the problem persists, replace the system
planar, Location: P1
Reseat the operator panel cable. If the problem
is not resolved, replace these parts in the
following order:
1. Operator panel assembly. (See VPD note 2
on page 41.)
2. System board (See system board note 3 on
page 41.)
3. If the problem is fixed, go to "MAP 410:
Repair Checkout" in RS/6000 and Eserver
pSeries Diagnostic Information for Multiple
Bus Systems . If the problem persists, go to
"MAP 1540: Minimum Configuration" on
page 57 to isolate the problem.