IBM 87302RU, Hardware Maintenance Manual

Page: 24 / 180

Table 3. Power module LEDs (continued)
DC IN or AC IN DC OUT
! (Error)
(amber) Description and action
Off Off Off or On* There is an input power problem.
Possible causes:
v
There is no power to the power module.
Actions: Make sure that:
1. The power is correctly connected to the
unit.
2. The power is connected to 220 v ac
(8730) or –48 v dc (8720).
3. The power source functions properly.
v The power module has failed.
Action: Replace the power module.
If the problem remains, have the unit serviced.
*Error LED will operate only if a redundant
power supply is installed.
On On On There is a fault condition in the power supply.
Possible causes:
v Thermal fault.
Action: Replace the power module.
v
12 v over-voltage power condition or 12 v
under-voltage power condition.
Actions: Determine the cause of shutdown
using diagnostics and replace the failed
component. When the fault has ben
cleared, reset the power module.
– Issue a power-module reset through the
management module.
– Remove the power module from the unit
for at least 10 seconds.
14
BladeCenter T Type 8720 and 8730: Hardware Maintenance Manual and Troubleshooting Guide