IBM Redboks System x3550 M4, Installation And Service Manual

Page: 161 / 820

AC power-supply LEDs
Description Action Notes AC DC Error (!)
On Off Off Power-supply not
fully seated, faulty
system board, or
the power supply
has failed.
1. Reseat the power supply.
2.
Follow actions in the “Power
problems” on page 166.
3. If the OVER SPEC LED on
the light path diagnostics is
lit, follow the actions in
“Light path diagnostics
LEDs” on page 137.
4. If the OVER SPEC LED on
the light path diagnostics is
not lit, check the error LEDs
on the system board and the
IMM2 error messages. Follow
steps in “Power problems”
on page 166 and “Solving
power problems” on page
175 until the problem is
solved.
Typically indicates a
power-supply is not
fully seated.
On Off On The power supply
has failed. Replace the power supply.
On On On The power supply
has failed. Replace the power supply.
DC power-supply LEDs:
Use this information to view DC power-supply LEDs.
The following illustration shows the locations of the power-supply LEDs on the dc
power supply.
The following table describes the problems that are indicated by various
combinations of the power-supply LEDs on a dc power supply and suggested
actions to correct the detected problems.
Figure 90. DC power-supply LEDs
Chapter 4. Troubleshooting
143