Lenovo ThinkEdge SE70, User Manual, Page: 32 / 46

Audio problems (for selected models)
Problem Solution
The sound comes from one of the external
speakers.
• Ensure that the speaker cable is inserted completely into the
connector on the computer.
• Ensure that the cable that connects the left speaker to the right
speaker is securely connected.
• Ensure that the balance settings are set correctly.
Network problems
Note: The Wi-Fi
®
, Bluetooth, and Ethernet LAN features are optional.
Problem Solution
The computer cannot connect to an Ethernet
LAN.
• Connect the cable from the Ethernet connector to the RJ45
connector of the hub.
• Enable the Ethernet LAN adapter.
1. Go to System Settings and select Networks .
2. Ensure the Ethernet option is enabled.
• Update or reinstall the Ethernet LAN driver.
• Install all networking software that is necessary for your network
environment. Check with your LAN administrator for the necessary
networking software.
• Set the same duplex for the switch port and the adapter. If you
configured the adapter for full duplex, ensure that the switch port is
also configured for full duplex. Setting a wrong duplex mode might
degrade performance, cause data loss, or result in lost
connections.
When a Gigabit Ethernet model computer is
used at a speed of 1000 Mbps, the Ethernet
LAN connection fails or errors occur.
Connect the network cable to the Ethernet connector using Category
5 wiring and a 100 BASE-T hub/switch (not 100 BASE-X).
The Wi-Fi feature does not work.
• Enable all Wi-Fi devices.
1. Launch System Settings and select Networks .
2. Ensure the Wi-Fi option is enabled.
3. Make sure that Wi-Fi is enabled by the toggle at the top.
4. Select the settings cog next to each Wi-Fi device, and make
sure that it is configured and enabled.
• Update or reinstall the Wi-Fi driver.
The Bluetooth feature does not work.
• Enable all Bluetooth devices.
1. Launch System Settings and choose Bluetooth .
2. Make sure that Bluetooth is enabled by the toggle at the top.
3. Click on each device to enable and start pairing.
• Update or reinstall the Bluetooth driver.
Sound does not come from the Bluetooth
headset or headphones. Select the Bluetooth headset or headphones as the default audio
output device in advanced sound settings.
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ThinkEdge SE70 User Guide