Lenovo x3550 M5 Installation And Service Manual page 98

Table 18. Power problems and actions (continued)
• 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
Pwr rail 5 error has been
recorded in the system event
log.
Pwr rail 6 error has been
recorded in the system event
log.
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Lenovo System x3550 M5 Installation and Service Guide
Action
1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail 5 error has been recorded in
the system event log:
• Fan 7
• Fan 8
• SAS/SATA hard disk drives and USB
3. Restart the server. If the Pwr rail 5 error has been recorded in the system event
log again, (trained technician only) replace the system board (see "Removing the
system board" on page 268 and "Replacing the system board" on page 271).
4. Reinstall the components one at a time, in the order shown, restarting the
server each time. If the Pwr Rail 5 error has been recorded in the system event
log again, the component that you just reinstalled is defective. Replace the
defective component.
• Hard disk drives and USB
• Fan 7 (see "Removing a thermal kit (hot-swap fan)" on page 191 and
"Memory module installation" on page 160).
• Fan 8
1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail 6 error has been recorded in
the system event log:
• Optional cable for VGA external power
• PCI-E x8 and x16 (maximum expansion is 4 adapter cards)
• PCI-E hard disk drives
3. Restart the server. If the Pwr rail 6 error has been recorded in the system event
log again, (trained technician only) replace the system board (see "Removing the
system board" on page 268 and "Replacing the system board" on page 271).
4. Reinstall the components one at a time, in the order shown, restarting the
server each time. If the Pwr Rail 6 error has been recorded in the system event
log again, the component that you just reinstalled is defective. Replace the
defective component.
• Optional cable for VGA external power
• PCI riser-card assembly (see "Removing a PCI riser-card assembly" on page
169 and "Replacing a PCI riser-card assembly" on page 172).
• Hard disk drives