Lenovo PC 330 (English) Installation and User Guide - Page 169
Keyboard, mouse, and USB device problems
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• 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 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. Action 1. Ensure that: • All memory modules are the correct type supported by the server. See "Memory module installation rules" on page 75. • You followed the memory module installation rules. See "Memory module installation rules" on page 75. • 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 153 for the subsequent steps you should check after using the information in this topic. Symptom All or some keys on the keyboard do not work. The mouse or pointing device does not work. Action 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 45. 2. Restart the server. 3. Replace the keyboard. 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 45. 2. Restart the server. Chapter 7. Troubleshooting and diagnostics 157