Memory Module Problems - Lenovo ThinkServer RD350G User Manual And Hardware Maintenance Manual

• The status LEDs on each hot-swap hard disk drive help you easily identify a problem. See "Hot-swap-drive
status LEDs" on page 38.
Symptom
A newly installed hot-swap hard disk drive is not
recognized.
Multiple hard disk drives fail.

Memory module problems

Follow the suggested actions for the corresponding symptom in the order in which they are listed until the
problem is solved. If none of these actions solve the problem, see "Troubleshooting procedure" on page 145
for the subsequent steps you should check after using the information in this topic. If the problem still cannot
be solved, seek technical assistance. See Chapter 8 "Getting information, help, and service" on page 151.
Notes:
• If you are instructed to remove, install, or replace any CRUs, refer to the related procedure in Chapter
6 "Replacing hardware" on page 55.
• If an action step is preceded by "(Trained service technician only)," this action step is reserved for a trained
service technician and must be performed only by a trained service technician.
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ThinkServer RD350G User Guide and Hardware Maintenance Manual
Action
1. Ensure that the drive is installed into the correct drive
bay.
2. Restart the server.
3. Remove the drive from the bay, wait 45 seconds,
and reinsert the drive into the bay, making sure that
the drive connects to the hot-swap hard-disk-drive
backplane.
4. Run any diagnostic programs to test the hard disk
drive if you have.
5. Ensure that the hot-swap hard-disk-drive backplane
is correctly seated. When it is correctly seated, the
drive assemblies correctly connect to the
backplane without bowing or causing movement of
the backplane.
6. Ensure that the cable connection is correct. See
"Connecting the cables" on page 39.
7. Reconnect the backplane power cable and repeat
step 1 through step 4.
8. Reconnect the backplane signal cable and repeat
step 1 through step 4.
9. If you suspect a problem with the backplane signal
cable or the backplane:
a. Replace the affected backplane signal cable.
b. Replace the affected backplane.
1. Ensure that the cable connection is correct. See
"Connecting the cables" on page 39.
2. Reconnect the power cables.
3. Reconnect the signal cables.
4. Replace the affected signal cables.
5. If you suspect a problem with the backplane, replace
the affected backplane.