Symptom Action
The power on/off LED on an I/O drawer
operator panel does not come on or stay on.
(both the I/O drawer operator panel
power-on/off LED and the I/O drawer power
supply LEDs do not come on or stay on).
Go to “MAP 1520: Power” on page 89.
A rack or a rack mounted unit will not power on. Go to “MAP 1520: Power” on page 89.
You have a power problem. Go to “MAP 1520: Power” on page 89.
The system attention LED on the primary I/O
drawer operator panel is on and there is no
SRN displayed.
Go to “MAP 1520: Power” on page 89.
888 sequence in Operator Panel Display
An 888 sequence is displayed in the primary
I/O drawer operator panel display.
Go to the Fast Path MAP in the
Diagnostics
Information for Multiple Bus Systems
.
Other Symptoms or Problems
The operator panel displays OK. 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″
refers 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 and Concerns” on
page 159.
The system stops and all of the POST
indicators are displayed on the system console.
The term ″POST indicators″ refers 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 113 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 137.
Chapter 3. Maintenance Analysis Procedures
81
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