Lenovo ThinkServer TS450, User Manual And Hardware Maintenance Manual

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Symptom Action
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 storage drives fail. 1. If you have any diagnostic programs, run the diagnostic programs
to test the storage drives.
2. Ensure that the cable connection is correct. See “Connecting cables
for the backplane” on page 86 and “Installing a non-hot-swap drive”
on page 68.
3. Reconnect the power cable.
4. Reconnect the signal cable.
5. Replace the affected signal cable.
6. For hot-swap storage drives, if you suspect a problem with the
backplane, replace the affected backplane.
Memory module problems
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 “Features and specifications of your server” on page 7.
• You follow the memory module installation rules. See “Memory
module installation rules” on page 56.
• All memory modules are seated properly and securely.
• The system firmware is up-to-date.
2. If you have any diagnostic programs, run the diagnostic programs to
test the memory modules.
3. Reinstall the memory modules.
4. Replace the suspect memory modules.
5. (Trained service technician only) Replace the system board.
USB device problems
Symptom Action
A USB device does not work. 1. Ensure that:
• The USB cable is securely connected to the server. If the USB
device is connected to a USB hub, disconnect the device from the
hub and connect it directly to the server.
• The device drivers are installed properly.
• The USB controller is enabled in the Setup Utility program. See
“Using the Setup Utility program” on page 35.
2. Restart the server.
3. Replace the USB device.
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ThinkServer TS450 User Guide and Hardware Maintenance Manual