Power Problems - Lenovo System x3500 M5 Type 5464 Installation And Service Manual

Table 27. Optional-device problems and actions (continued)
Symptom
An Lenovo optional device that
worked previously does not
work now.

Power problems

• 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 IBM 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.
Table 28. Power problems and actions
Symptom
The power-control button does
not work, and the reset button
does not work (the server does
not start).
Note: The power-control
button will not function until
approximately 5 to 10 seconds
after the server has been
connected to power.
Action
3. Replace the device that you just installed.
1. Make sure that all of the cable connections for the device are secure.
2. If the device comes with test instructions, use those instructions to test the
device.
3. If the failing device is a SCSI device, make sure that:
• The cables for all external SCSI devices are connected correctly.
• The last device in each SCSI chain, or the end of the SCSI cable, is
terminated correctly.
• Any external SCSI device is turned on. You must turn on an external SCSI
device before you turn on the server.
4. Reseat the failing device.
5. Replace the failing device.
Action
1. Make sure that the power-control button is working correctly:
a. Disconnect the server power cords.
b. Reconnect the power cords.
c. (Trained technician only) Reseat the operator information panel cable, and
then repeat steps 1a and 1b.
• (Trained technician only) If the server starts, reseat the operator information
panel. If the problem remains, replace the operator information panel.
• If the server does not start, bypass the power-control button by using the
force power-on jumper (see "System-board switches and jumpers" on
page 27). If the server starts, reseat the operator information panel. If the
problem remains, replace the operator information panel.
2. Make sure that :
a. The power cords are correctly connected to the server and to a working
electrical outlet.
b. The type of memory that is installed is correct.
c. The DIMM is fully seated.
d. The LEDs on the power supply do not indicate a problem.
e. The microprocessors are installed in the correct sequence.
3. Reseat the following components:
a. DIMMs
b. (Trained technician only) Power switch connector
c. (Trained technician only) Power backplane
.
Chapter 4 Troubleshooting
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