Dell POWEREDGE 1955 - Manual (Page 105)

Troubleshooting Your System
105
6 If two or more server modules are installed in the chassis, press the KVM selection button on a
different server module.
NOTE:
After pressing the KVM selection button, allow approximately two seconds for the KVM functions to
change to a different server module.
If the mouse is connected to the back-panel KVM module and works with another server module, the
first server module may need to be reseated. See "Server Modules" on page 73. If reseating the server
module does not help, the server module may be faulty. See "Getting Help" on page 127.
7 Swap the mouse with a known-working mouse and repeat step 5 and step 6. If the mouse does not
work with any server module, see "Getting Help" on page 127.
Troubleshooting USB Devices
NOTE:
USB devices can be connected only to the front-panel custom cable. Total length of a USB cable should not
exceed 3 m (9.8 ft).
Problem
• A symptom of a USB problem is indicated by a system message
• USB device or USB device cable
• Keyboard/Video/Mouse (KVM) custom cable
• Server module
Action
1 Ensure that the server module(s) is turned on.
2 Check the USB device connection to the front-panel custom cable.
3 Check the custom cable connection to the front-panel custom-cable connector.
4 Swap the USB device with a known-working USB device.
5 If another server module is installed, connect the USB device to that server module. If the USB device
works with a different server module, the first server module may be faulty. See "Getting Help" on
page 127.
Responding to a Systems Management Alert Message
The Dell™ Remote Access Controller/Modular Chassis (DRAC/MC) management applications monitor
critical system voltages and temperatures, and the cooling fans in the system. For information about the
DRAC/MC alert messages, see the Configuration Guide.