IBM pSeries 690 Service Manual page 183

Symptom
All display problems.
The system will not power on and no error codes are
available.
The power light does not come on or stay on. (both the
operator panel power-on LED and the I/O subsystem
indicator panel power LEDs do not come on or stay on).
A rack or a rack-mounted unit will not power on.
You have a power problem.
The system attention LED on the media subsystem
operator panel is on and there is no error code displayed.
An 888 sequence is displayed in the media subsystem
operator panel display.
One or more partitions do not boot. You cannot activate
one or more partitions.
The operator panel displays OK and the fans and blowers
are off.
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 (the words memory, keyboard, network, scsi,
and speaker) that appear on the system console 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 (the words
memory, keyboard, network, scsi, and speaker) that
appear on the system console during the power-on
self-test (POST).
The system stops and the message STARTING SOFTWARE
PLEASE WAIT... is displayed on the firmware console.
Action
1. If using the Hardware Management Console, go to
2. If using a graphics display:
3. If using an ASCII terminal:
Power and Cooling Problems
Go to "MAP 1521: The System Will Not Power On And
No Error Codes Are Available" on page 194.
1. Check service processor error log.
2. Go to "MAP 1520: Power" on page 190.
1. Check service processor error log.
2. Go to "MAP 1520: Power" on page 190.
1. Check service processor error log.
2. Go to "MAP 1520: Power" on page 190.
1. Check service processor error log.
2. Go to "MAP 1520: Power" on page 190.
888 Sequence in Operator Panel Display
Go to the Fast Path MAP in the RS/6000 and Eserver
pSeries Diagnostic Information for Multiple Bus Systems.
Other Symptoms or Problems
Go to "MAP 1020: Problem Determination" on page 166.
The service processor is ready. The system is waiting for
power-on.
Go to "Boot Problems" on page 388.
Go to "Boot Problems" on page 388.
Go to Chapter 4, "Checkpoints", on page 353.
the IBM Hardware Management Console for pSeries
Maintenance Guide, order number SA38-0603.
a. Go to the problem determination procedures for
the display.
b. If you do not find a problem, replace the display
adapter.
a. Make sure that the ASCII terminal is connected to
S1.
b. If problems persist, go to the problem
determination procedures for the terminal.
c. If you do not find a problem, replace the primary
I/O book.
Chapter 3. Maintenance Analysis Procedures
163