Intermittent Problems - Lenovo ThinkEdge SE455 V3 User Manual

1. Check the Lenovo XClarity Controller event log and the system error log for information to make sure if
any of the fans or rotors of the fans fail. Replace the failed fan.
2. With air flow sensor board installed, SE455 V3 BMC supports dust filter measurement to check the
status of the dust filter. Log in to Lenovo XClarity Controller web interface, and go to Utilization ➙ Fan
Speed (RPM) ➙ Dust Filter Measurement to take the measurement by selecting Run immediately
(once), or by setting a regular schedule. When taking the measurement, the fans will operate at full fan
speed for about 30 seconds. Make sure the high RPM is not caused by dust filter measurement.
3. Check to see if the system inlet perforation or heatsinks are clogged.
4. Make sure that all air baffles are correctly installed in the server.
5. Check the thermal grease on the processor, and make sure it's not contaminated.

Intermittent problems

Use this information to solve intermittent problems.
• "Intermittent external device problems" on page 288
• "Intermittent KVM problems" on page 288
• "Intermittent unexpected reboots" on page 289
Intermittent external device problems
Complete the following steps until the problem is solved.
1. Update the UEFI and XCC firmware to the latest versions.
2. Make sure that the correct device drivers are installed. See the manufacturer's website for
documentation.
3. For a USB device:
a. Make sure that the device is configured correctly.
Restart the server and press the key according to the on-screen instructions to display the LXPM
system setup interface. (For more information, see the "Startup" section in the LXPM documentation
compatible with your server at
➙ Devices and I/O Ports ➙ USB Configuration.
b. Connect the device to another port. If using a USB hub, remove the hub and connect the device
directly to the server. Make sure that the device is configured correctly for the port.
Intermittent KVM problems
Complete the following steps until the problem is solved.
Video problems:
1. Make sure that all cables and the console breakout cable are properly connected and secure.
2. Make sure that the monitor is working properly by testing it on another server.
3. Test the console breakout cable on a working server to ensure that it is operating properly. Replace the
console breakout cable if it is defective.
Keyboard problems:
Make sure that all cables and the console breakout cable are properly connected and secure.
Mouse problems:
Make sure that all cables and the console breakout cable are properly connected and secure.
288 ThinkEdge SE455 V3 User Guide
https://pubs.lenovo.com/lxpm-overview/
.) Then, click System Settings