Symptom Action
Other Symptoms or Problems
The operator panel displays only the yellow
background light. Fans and blowers are off.
The service processor (SP) is ready. The
system is waiting for power on.
All of the system POST indicators are displayed
on the system console, the system pauses and
then restarts. The term ″POST indicators″ refer
to the device mnemonics (words Memory,
Keyboard, Network, SCSI, and Speaker) that
appear on the system console during the
power-on self-test (POST).
Go to “Boot Problems” on page 155.
The system stops and all of the POST
indicators are displayed on the system console.
The term ″POST indicators″ refer to the device
mnemonics (words Memory, Keyboard, Network,
SCSI, and Speaker) that appear on the system
console during the power-on self-test (POST).
Go to “MAP 1540: Minimum Configuration” on
page 117 to isolate the problem.
The system stops and the message STARTING
SOFTWARE PLEASE WAIT... is displayed on the
system console.
Go to “Chapter 4. Checkpoints” on page 135.
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 from 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 cable
b. Keyboard
c. Service Processor card
2. If the password is being entered from an
ASCII terminal, then use the Problem
Determination Procedures for the ASCII
terminal. Make sure the ASCII terminal is
connected to S1.
If the problem persists, replace the service
processor card.
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 problem not resolved, replace in order:
1. Operator Panel Assembly. Update the VPD
information in the new operator panel.
2. Service processor card (See notes on 79.)
82 Service Guide
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