v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v If an action step is preceded by “(Trained technician only),” that step must be performed only by a trained
technician.
v Go to the IBM support website at http://www.ibm.com/supportportal/ to check for technical information, hints,
tips, and new device drivers or to submit a request for information.
Symptom Action
The Pwr rail K error has been
recorded in the system event
log.
1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail K error has been recorded in
the system event log:
v Optional adapter (if one is present) installed in riser-card assembly 1 (or
Rear Hard disk Drives in Rear two Hard-disk-drive kit on Riser 1)
v Riser-card assembly 1 (or Rear two Hard-disk-drivekit on Riser 1)
v Optional adapter (if one is present) installed in PCIe slot 4
v Optional adapter (if one is present) installed in PCIe slot 5
v Raid Card in Raid slot
3. Restart the server. If the Pwr rail H error has been recorded in the system
event log again, (trained technician only) replace the system board (see
“Removing the system board” on page 276 and “Replacing the system board”
on page 279).
4. Reinstall the components one at a time, in the order shown, restarting the
server each time. If the Pwr rail K error has been recorded in the system event
log again, the component that you just reinstalled is defective. Replace the
defective component.
v Raid Card in Raid slot
v Optional adapter (if one is present) installed in PCIe slot 5
v Optional adapter (if one is present) installed in PCIe slot 4
v Riser-card assembly 1 (or Rear two Hard-disk-drivekit on Riser 1)
v Optional adapter (if one is present) installed in riser-card assembly 1 (or
Rear Hard disk Drives in Rear two Hard-disk-drive kit on Riser 1)
The Pwr rail L error has been
recorded in the system event
log.
1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail L error has been recorded in
the system event log:
v Optional PCI adaptor power cable-correlated PCI adaptor
v PCI Riser Card Assembly where the optional PCI adaptor power
cable-correlated PCI adaptor is installed
– Optional PCI adaptor power cable (if one is present)
3. Restart the server. If the Pwr rail L error has been recorded in the system
event log again, (trained technician only) replace the system board (see
“Removing the system board” on page 276 and “Replacing the system board”
on page 279).
4. Reinstall the component one at a time, in the order shown, restarting the
server. If the Pwr rail L error has been recorded in the system event log again,
the component that you just reinstalled is defective. Replace the defective
component.
v Optional PCI adaptor power cable (if one is present)
v PCI Riser Card Assembly where the optional PCI adaptor power
cable-correlated PCI adaptor is installed
v Optional PCI adaptor power cable-correlated PCI adaptor
Chapter 3. Troubleshooting 107
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