Lenovo ThinkServer RD630 - Manual (Page 175)

Symptom Action
backplane without bowing or causing movement of
the backplane.
6. Ensure that the cable connection is correct. See
“Mini-SAS to mini-SAS signal cable connections” 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.
Multiple hard disk drives fail. 1. Ensure that the cable connection is correct. See
“Mini-SAS to mini-SAS signal cable connections” on
page 39.
2. Reconnect the power cable(s).
3. Reconnect the signal cable(s).
4. Replace the affected signal cable(s).
5. If you suspect a problem with the backplane, replace
the affected backplane.
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 159
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 165.
Notes:
• If you are instructed to remove, install, or replace any CRUs, refer to the related procedure in Chapter 6
“Installing, removing, or replacing hardware” on page 71.
• 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.
Symptom Action
The amount of system memory that is displayed is less
than the total capacity of the installed physical memory
modules and you suspect a memory module problem. 1. Ensure that:
• All memory modules are the correct type
supported by the server. See “Memory module
installation rules” on page 82.
• You followed the memory module installation
rules. See “Memory module installation rules” on
page 82.
• All memory modules are seated correctly and
securely.
• The system firmware is up-to-date.
2. Reinstall the memory modules.
3. Replace the suspect memory modules.
Chapter 7 . Troubleshooting and diagnostics 163