Lenovo ThinkPad 390X User's Reference for ThinkPad 390 - Page 121
Infrared Communication Problems
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Troubleshooting Charts Infrared Communication Problems Problem You computer cannot communicate with other devices using the infrared port. Incorrect data is sent between your computer and a communicating device. Action Make sure that: The communication speeds are the same. The infrared ports are clean. No objects are between the computer and the communicating device. The distance and angle between your computer and the device is within the set range. The other computer's infrared port complies to the same standard as yours. You are not operating under direct sunlight. The infrared ports are directly facing each other. Communication can be affected by the light from the display on the computer. To avoid this, open the display to a wide angle. The same communications application has to be running on your computer and the other computer. Refer to the application manuals for more information. Make sure that: The distance and angle between your computer and the device is within the set range. The communication speeds are the same. There are no other devices that radiate infrared rays, such as remotecontrolled devices or wireless headphones, near your computer or the communicating device. You are not operating under direct sunlight. No fluorescent lamps are near your computer or the communicating device. Chapter 4. Solving Computer Problems 105