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 F error has been
recorded in the system event
log.
1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail F error has been recorded in
the system event log:
v Hard disk drives at backplane assembly 3
v Hard disk drive backplane assembly 3
v Rear Hard disk drives
v Rear two Hard-disk-drive kit
v Optional adapter (if one is present) installed in riser-card assembly 1
v Riser-card assembly 1
v PCIe Solid state drives
v PCIe Solid state drive backplane assembly
v USB devices
v SD adapter
v LCD monitor connected to rear VGA port (if one is present)
3. Restart the server. If the Pwr rail F 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 F error has been recorded in the system event
log again, the component that you just reinstalled is defective. Replace the
defective component.
v LCD monitor connected to rear VGA port (if one is present)
v SD adapter
v USB devices
v PCIe Solid state drive backplane assembly
v PCIe Solid state drives
v Riser-card assembly 1 (See “Removing a riser-card assembly” on page 180
and “Replacing a riser-card assembly” on page 181.
v Optional adapter (if one is present) installed in riser-card assembly 1 (See
“Removing an adapter” on page 185 and “Replacing an adapter” on page
190.
v Rear two Hard-disk-drive kit
v Rear Hard disk drives
v Hard disk drive backplane assembly 3
v Hard disk drives at backplane assembly 3
104 System x3650 M5 Type 5462: Installation and Service Guide
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