Symptom Action
There is a Display Problem (Distortion, Blurring, Etc.)
Symptom: All display problems.
Action:
1. If you are using the HMC, go to the IBM Hardware Management Console for pSeries Maintenance Guide, order
number SA38-0603.
2. If you are using a graphics display:
a. Go to the problem determination procedures for the display.
b. If you do not find a problem:
v replace the display adapter, location U0.1-P2-In or U0.dd-P1-In.
v replace the backplane in which the card is plugged.
3. If you are using an ASCII terminal:
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 CEC backplane, location U0.1-P1. (See notes on page 61).
Power and Cooling Problems
The system will not power on and no error codes are
available.
Go to “MAP 1520: Power” on page 105.
The power LEDs on the operator panel and the power
supply do not come on or stay on.
1. Check the service processor error log.
2. Go to “MAP 1520: Power” on page 105.
The power LEDs on the operator panel and the power
supply come on and stay on, but the system does not
power on.
1. Check the service processor error log.
2. Go to “MAP 1520: Power” on page 105.
A rack or a rack-mounted unit will not power on.
1. Check the service processor error log.
2. Go to “MAP 1520: Power” on page 105.
The cooling fan(s) do not come on, or come on but do
not stay on.
1. Check the service processor error log.
2. Go to “MAP 1520: Power” on page 105.
The system attention LED on the operator panel is on
and there is no error code displayed.
1. Check the service processor error log.
2. Go to “MAP 1520: Power” on page 105.
888 Sequence in Operator Panel Display
An 888 sequence is displayed in the operator panel
display.
Go to the Fast Path MAP in the RS/6000 Eserver
pSeries Diagnostic Information for Multiple Bus Systems.
Other Symptoms or Problems
The operator panel displays OK and the fans are off. The service processor is ready. The system is waiting for
power-on. Boot the system. If the boot is unsuccessful,
and the system returns to the OK prompt, go to “MAP
1020: Problem Determination” on page 69.
The operator panel displays STBY. The service processor is ready. The system was shut
down by the operating system and is still powered on.
This condition can be requested by a privileged system
user with no faults. See the service processor error log
for possible operating system fault indications.
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).
Go to “Boot Problems/Concerns” on page 204.
66 Eserver pSeries 630 Model 6C4 and Model 6E4 Service Guide
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