Lenovo System x3650 M4 Installation And Service Manual page 214

• 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 OVER SPEC LED on the
light path diagnostics panel
is lit, or the Pwr rail F error
has been recorded in the IMM
event log.
The OVER SPEC LED on the
light path diagnostics panel
is lit, or the Pwr rail G error
has been recorded in the IMM
event log.
202
Lenovo System x3650 M4 Installation and Service Guide
Action
5. Follow actions in "Solving power problems" on page 206, if the OVER SPEC
LED on the light path diagnostics panel is still lit.
6. Replace the power supply if the OVER SPEC LED on the light path diagnostics
panel is still lit.
1. Disconnect the server power cords.
2. Remove the following components if the Pwr rail F error has been recorded
in the IMM event log:
• Optional adapter (if one is present) installed in PCI riser-card assembly 1
• PCI riser-card assembly 1
• Fan 4
• DIMMs 19 through 24
3. Restart the server. If the Pwr rail F error has been recorded in the IMM event
log again, (trained technician only) replace the system board (see "Removing the
system board" on page 339 and "Replacing the system board" on page 341).
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 IMM event
log again, the component that you just reinstalled is defective. Replace the
defective component.
• DIMMs 19 through 24 (see "Removing a memory module" on page 266 and
"Installing a memory module" on page 50)
• Fan 4 (see "Removing a hot-swap fan" on page 311 and "Replacing a
hot-swap fan" on page 312)
• PCI riser-card assembly 1 (see "Removing a PCI riser-card assembly" on
page 277 and "Replacing a PCI riser-card assembly" on page 278).
• Optional adapter (if one is present) installed in PCI riser-card assembly 1 (see
"Removing an adapter" on page 280 and "Replacing an adapter" on page
282).
5. Follow actions in "Solving power problems" on page 206, if the OVER SPEC
LED on the light path diagnostics panel is still lit.
6. Replace the power supply if the OVER SPEC LED on the light path diagnostics
panel is still lit.
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 339 and "Replacing the system board" on page 341).