Observable Problems - Lenovo ThinkSystem SE350 Maintenance Manual

Figure 162. Antenna position
• Move the SE350 to an area with less RF noise or a location without shields (metal parts).
• Move the SE350 closer to the WLAN AP router.
• Adjust the Wi-Fi router's frequency to a channel with less RF noise.
• Adjust the direction of the router's antennas with some positioned vertically and some positioned
horizontally.
• Wi-Fi networking performance will be affected when multiple devices are connected to the same channel
at the same time. Change the frequency and channel of the Wi-Fi router, use a Wi-Fi extender to help
spread out the signal, or use a router with a more powerful signal.
Check the status with these useful commands:
ifconfig //**check if WLAN is ready, "wlan0" shows up **//
sudo uci show network | grep wifi //** show related to WLAN parameters setting **//
sudo uci show wireless //**confirm setting **//
sudo ping -I wlan0 8.8.8.8 //**check WLAN network function successfully **//
sudo iw dev wlan0 link //**Check WLAN Signal Strength**//

Observable problems

Use this information to solve observable problems.
• "Server hangs during the UEFI boot process" on page 169
• "The server immediately displays the POST Event Viewer when it is turned on" on page 169
• "Server is unresponsive (POST is complete and operating system is running)" on page 169
• "Server is unresponsive (POST failed and cannot start System Setup)" on page 170
• "Voltage planar fault is displayed in the event log" on page 170
• "Unusual smell" on page 170
• "Server seems to be running hot" on page 170
• "Cracked parts or cracked chassis" on page 171
ThinkSystem SE350 and ThinkSystem SE350 Enclosures Maintenance Manual
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