IBM RS/6000 44P 270 Service Manual page 48

Symptom
All display problems.
The power LEDs on the operator panel and
the power supply do not start flashing within
30 seconds of ac power application.
The power LEDs on the operator panel and
the power supply do not come on or stay on.
The power LEDs on the operator panel and
the power supply come on and stay on but
the system does not power on.
The cooling fan(s) do not come on or come
on but do not stay on.
888 is displayed in the operator panel.
You have OK displayed.
You have STBY displayed.
30
Service Guide
Action
v If using a graphics display:
1. Go to the problem determination
procedures for the display.
2. If you do not find a problem, replace the
display adapter.
3. If you do not find a problem, suspect the
I/O board. Go to "MAP 1540: Minimum
Configuration" on page 50.
v Using an ASCII terminal:
1. Make sure that the ASCII terminal is
connected to S1.
2. If problems persist, go to the problem
determination procedures for the terminal.
3. If you do not find a problem, suspect the
I/O board. Go to "MAP 1540: Minimum
Configuration" on page 50.
Power and Cooling Problems
Go to "MAP 1520: Power" on page 45.
Go to "MAP 1520: Power" on page 45.
Go to "MAP 1520: Power" on page 45.
Go to "MAP 1520: Power" on page 45.
Flashing 888 in Operator Panel Display
Go to the Fast Path MAP in the RS/6000 and
Eserver pSeries Diagnostics Information for
Multiple Bus Systems.
Other Symptoms or Problems
The service processor is ready. Go to "MAP
0020: Problem Determination Procedure" in the
RS/6000 and Eserver pSeries Diagnostics
Information for Multiple Bus Systems.
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
service processor error log for possible operating
system fault indications.