Lenovo HX3510-G Installation And Service Manual page 85

• 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 A error has been
recorded in the system event
log.
Action
c. (Trained technician only) Reseat the operator information panel cable, and
then repeat steps a and b.
• (Trained technician only) If the server starts, replace the operator
information panel.
• If the server does not start, go to 3.
3. Make sure that both power supplies installed in the server are of the same type.
Mixing different ratings of power supplies in the server will cause a system error
(CONFG icon will be shown on the LCD system information display panel if
one is available).
4. Make sure that:
• The power cords are correctly connected to the server and to a working
electrical outlet.
• The type of memory that is installed is correct.
• The DIMMs are fully seated.
• The LEDs on the power supply do not indicate a problem.
• The microprocessors are installed in the correct sequence.
5. Reseat the following components:
a. Operator information panel connector
b. Power supplies
6. Replace the components listed in step 5 one at a time, in the order shown,
restarting the server each time.
7. If you just installed an optional device, remove it, and restart the server. If
the server now starts, you might have installed more devices than the power
supply supports.
8. See "Power-supply LEDs" on page 57.
9. See "Solving undetermined problems" on page 84.
1. Disconnect the server power cords.
2. (Trained technician only) remove microprocessor 1 if the Pwr rail A error has
been recorded in the system event log.
3. (Trained technician only) replace the system board (see "Removing the system
board" on page 223 and "Replacing the system board" on page 226).
4. Reinstall the component; then, restarting the server. If the Pwr rail A error has
been recorded in the system event log again, the component that you just
reinstalled is defective. Replace the defective component.
• (Trained technician only) Microprocessor 1 (see "Removing a microprocessor
and heat sink" on page 207 and "Replacing a microprocessor and heat sink"
on page 213).
.
Chapter 3 Troubleshooting
73