IBM RS/6000 7043 43P Series Service Manual page 46

Symptom
All display problems.
The power LEDs on the operator panel and
power supply do not start flashing within 30
seconds of A/C power application.
The power LEDs on the operator panel and
power supply do not come on or stay on.
The power LED on the operator panel comes on
and the system powers on automatically when
A/C power is applied.
The power LEDs on the operator panel 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.
You do not have a determined symptom.
2-4
7043 43P Series Service Guide
Action
1. If using a graphics display:
a. Go to the Problem Determination
Procedures for the display.
b. If you do not locate the problem, replace
the display adapter.
c. If you do not locate the problem,
suspect the systm board. Go to "MAP
1540: Minimum Configuration" on
page 2-21.
2. If using an ASCII terminal:
Make sure that the ASCII terminal is
connected to S1.
a. If the problems persist, go to the
Problem Determination Procedures for
the terminal.
b. If you do not locate the problem,
suspect the system board. Go to "MAP
1540: Minimum Configuration" on
page 2-21.
Power and Cooling Problems
Go to "MAP 1520: Power" on page 2-15.
Go to "MAP 1520: Power" on page 2-15.
Automatic power-up is a feature on all models of
the 7043 43P series. Refer to the System
Board Jumper Settings for your model in
Chapter 1 for the correct settings. If the jumper
is set in the disabled position, replace the
system board,
Go to "MAP 1520: Power" on page 2-15.
Go to "MAP 1520: Power" on page 2-15.
Other Symptoms or Problems
Go to "MAP 1020: Problem Determination" on
page 2-7.