USB keyboard, mouse, or pointing-device problemsThis topic provides suggested actions to resolve problems with the USB keyboard,mouse, or pointing device attached to the server.About this taskv Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v See Chapter 4, “Parts listing, Types 7145, 7146, 7143, and 7191,” on page 81 to determine which components arecustomer replaceable units (CRU) and which components are field replaceable units (FRU).v If an action step is preceded by “(Trained service technician only),” that step must be performed only by atrained service technician.Symptom ActionAll or some keys on thekeyboard do not work. 1. If you have installed a USB keyboard, run the Setup utility and enablekeyboardless operation to prevent the POST error message 301 from beingdisplayed during startup.2. See for information about keyboard compatibility.3. Make sure that:v The keyboard cable is securely connected.v The server and the monitor are turned on.4. Reseat the following components:a. Keyboardb. I/O-board assembly (see “Removing the I/O-board shuttle” on page 143and “Replacing the I/O-board shuttle” on page 144)5. Replace the components listed in step “USB keyboard, mouse, orpointing-device problems” one at a time, in the order shown, restarting theserver each time.The USB mouse or USBpointing device does not work. 1. See for information about mouse compatibility.2. Make sure that:v The mouse or pointing-device USB cable is securely connected to the server,and the device drivers are installed correctly.v The server and the monitor are turned on.v Keyboardless operation is enabled in the Setup utility.3. If you are using a USB hub, disconnect the USB device from the hub andconnect it directly to the server.4. Reseat the following components:a. Mouse or pointing deviceb. I/O-board assembly (see “Removing the I/O-board shuttle” on page 143and “Replacing the I/O-board shuttle” on page 144)5. Replace the components listed in step “USB keyboard, mouse, orpointing-device problems” one at a time, in the order shown, restarting theserver each time.46 IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Problem Determination and Service Guide
