IBM BladeCenter S Problem Determination And Service Manual page 75

9. If the problem seems to be a USB device, verify that the device is compatible
with the BladeCenter USB interface and the software running on the blade.
a. Verify the latest device driver is installed.
b. Try the USB device on a non-blade server or blade server in another chassis
running the same operating system type and version.
c. Try another USB device.
d. If no external USB devices work in the USB port, replace the media tray.
Multiple blade servers cannot access the media tray
Use this procedure if multiple blade servers are unable to access the media tray.
Problem
Multiple blade servers (or a single blade server in multiple blade server bays) are
unable to access the media tray in the BladeCenter S chassis.
Investigation
Perform these steps to resolve the problem:
1. Reseat the media tray.
Note: When you remove the media tray, the fan modules will operate at full
speed. However, they will return to normal operation when you install the
media tray back in the BladeCenter S chassis.
2. Log in to the advanced management module and check the event log for
service processor communication errors for multiple blade servers. If so, see
"Service processor communication error displayed for multiple blade servers"
on page 49.
3. Plug a USB device into the USB v2.0 port on the media tray to verify that the
selection and communication paths are working. If the blade servers can access
this device, replace the DVD drive.
4. Replace the media tray.
Blade servers cannot communicate with the media tray
Use this procedure if no blade servers in the BladeCenter S chassis can
communicate with the media tray.
Problem
One or more blade servers is unable to communicate with the media tray in the
BladeCenter S chassis.
Investigation
Perform these steps to resolve the problem:
1. Log in to the advanced management module and view the event log for I2C
errors for devices on bus 7.
2. If there are no error messages in the event log, look at the System LED panel
on the front of the media tray and resolve any issues that you find. See
"BladeCenter S chassis system LED panel" on page 25 for more information.
3. If the media tray is still not working properly, see "I2C errors" on page 31.
Chapter 3. Troubleshooting
61