Specifications

Symptom Action
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).
Go to “Boot Problems and Concerns” on
page 96.
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).
Go to “MAP 1540: Minimum Configuration” on
page 52 to isolate the problem.
The system stops and the message
STARTING SOFTWARE PLEASE WAIT... is
displayed on the system console.
Go to “Firmware Checkpoints” on page 85.
The system does not respond to the password
being entered, or the system login prompt is
displayed when booting in service mode.
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
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. (See VPD note 2
on page 37.)
2. System board (See system board note 3 on
page 37.)
3. If the problem is fixed, go to MAP 410:
Repair Checkout in
Diagnostic Information
for Multiple Bus Systems
. If the problem
persists, go to “MAP 1540: Minimum
Configuration” on page 52 to isolate the
problem.
42 Service Guide