Lenovo System x3650 M4 HD, Installation And Service Manual

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• 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 Lenovo 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 Action
The system-error LED on the
light path diagnostics panel
is lit and the Pwr rail G error
has been recorded in the IMM
event log. 1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail G error has been recorded
in the IMM event log:
• Optional PCI adaptor power cable (if one is present)
• Fan 3
• Hard disk drives
• Hard disk drive backplane assembly
3. Restart the server. If the Pwr rail G error has been recorded in the IMM event
log again, (trained technician only) replace the system board (see “Removing the
system board” on page 296 and “Replacing the system board” on page 298).
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 IMM event
log again, the component that you just reinstalled is defective. Replace the
defective component.
• Hard disk drive backplane assembly
• Hard disk drives
• Fan 3 (see “Removing a hot-swap fan” on page 241 and “Replacing a
hot-swap fan” on page 242)
• Optional PCI adaptor power cable (if one is present) (see “Removing an
adapter” on page 226 and “Replacing an adapter” on page 228).
5. Follow actions in “Solving power problems” on page 157, if the system-error
LED on the light path diagnostics panel is still lit.
6. Replace the power supply if the system-error LED on the operator information
panel is still lit.
The system-error LED on the
light path diagnostics panel
is lit and the Pwr rail H error
has been recorded in the IMM
event log. 1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail H error has been recorded
in the IMM event log:
• Hard disk drive power cable
• Hard disk drives
• Hard disk drive backplane
or
• PCI adaptor power cable
• Adapters installed in PCI riser-card assembly 2
• PCI riser-card assembly 2
3. Restart the server. If the Pwr rail H error has been recorded in the IMM event
log again, (trained technician only) replace the system board (see “Removing the
system board” on page 296 and “Replacing the system board” on page 298).
4. Reinstall the components one at a time, in the order shown, restarting the
server each time. If the Pwr rail H error has been recorded in the IMM event
log again, the component that you just reinstalled is defective. Replace the
defective component.
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Lenovo System x3650 M4 HD Installation and Service Guide