Lenovo System x3650 M5 Installation And Service Manual page 109

• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
• Go to the support website at http://www.lenovo.com/support to check for technical information, hints, tips,
and new device drivers or to submit a request for information.
Symptom
The Pwr rail G error has been
recorded in the system event
log.
Action
• Riser-card assembly 1 (See "Removing a riser-card assembly" on page 186
and "Replacing a riser-card assembly" on page 188.
• Optional adapter (if one is present) installed in riser-card assembly 1 (See
"Removing an adapter" on page 192 and "Replacing an adapter" on page
196.
• Rear two Hard-disk-drive kit
• Rear Hard disk drives
• Hard disk drive backplane assembly 3
• Hard disk drives at backplane assembly 3
1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail G error has been recorded in
the system event log:
• Raid Card in Raid slot
• Optional adapter (if one is present) in PCIe slot 4
• Optional adapter (if one is present) in PCIe slot 5
• Optional adapter (if one is present) installed in riser-card assembly 1
• Riser-card assembly 1
• Optional adapter (if one is present) installed in riser-card assembly 2 (or Rear
Hard disk Drives in Rear two Hard-disk-drive kit on Riser 2)
• Riser-card assembly 2 (or Rear two Hard-disk-drive kit on Riser 2)
• Microprocessor 2
– (Trained technician only) Microprocessor 2 (See "Removing a
microprocessor and heat sink" on page 276 and "Replacing a
microprocessor and heat sink" on page 281).
3. Restart the server. If the Pwr rail G error has been recorded in the system event
log again, (trained technician only) replace the system board (see "Removing the
system board" on page 292 and "Replacing the system board" on page 294).
4. Reinstall the components one at a time, in the order shown, restarting the
server each time. If the Pwr rail G error has been recorded in the system event
log again, the component that you just reinstalled is defective. Replace the
defective component.
• Microprocessor 2
– (Trained technician only) Microprocessor 2 (See "Removing a
microprocessor and heat sink" on page 276 and "Replacing a
microprocessor and heat sink" on page 281).
• Riser-card assembly 2 (See "Removing a riser-card assembly" on page
186 and "Replacing a riser-card assembly" on page 188) or Rear two
Hard-disk-drive kit on Riser 2.
• Optional adapter (if one is present) installed in riser-card assembly 2 (See
"Removing an adapter" on page 192 and "Replacing an adapter" on page
196) or Rear Hard disk Drives in Rear two Hard-disk-drive kit on Riser 2.
.
Chapter 3 Troubleshooting
97