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

1.

Ensure that:

than the total capacity of the installed physical memory

 

• All memory modules are the correct type

modules and you suspect a memory module problem.

 

 

supported by the server. See “Memory module

 

 

 

 

installation rules” on page 95.

 

 

• You followed the memory module installation

 

 

rules. See “Memory module installation rules” on

 

 

page 95.

 

 

• 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.

 

4.

(Trained service technician only) Replace the system

 

 

board.

 

 

 

Keyboard, mouse, and USB device 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 179 for the subsequent steps you should check after using the information in this topic.

Symptom

 

Action

 

 

All or some keys on the keyboard do not work.

1. Ensure that:

 

 

• The USB keyboard cable is securely connected

 

 

to a USB connector on the server. If the USB

 

 

keyboard is connected to a USB hub, disconnect

 

 

the keyboard from the hub and connect it directly

 

 

to the server.

 

 

• No keys are stuck.

 

 

• The USB controller is enabled in the Setup Utility

 

 

program. See “Using the Setup Utility program”

 

 

on page 59.

 

2.

Restart the server.

 

3. Replace the keyboard.

 

 

The mouse or pointing device does not work.

1. Ensure that:

 

 

• The mouse or pointing device cable is securely

 

 

connected to the server. If the USB mouse or

 

 

pointing device is connected to a USB hub,

 

 

disconnect the mouse or pointing device from the

 

 

hub and connect it directly to the server.

 

 

• The mouse or pointing device is clean and no dust

 

 

accumulates.

 

 

• The device drivers are installed correctly.

 

 

• The USB controller is enabled in the Setup Utility

 

 

program. See “Using the Setup Utility program”

 

 

on page 59.

 

2.

Restart the server.

 

 

 

Chapter 7. Troubleshooting and diagnostics 183

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Image 195
Lenovo RD430 manual Keyboard, mouse, and USB device problems