Troubleshooting
Infrared Communication Problems
Problem Action
The computer cannot
communicate with other
devices using the infrared
port on the computer.
Verify that:
Power is supplied to the infrared port by the ThinkPad Features program
(click on the Infrared (
) icon).
The infrared function is enabled and other choices are set correctly in
ThinkPad Features program (click on the Infrared (
) icon in the
ThinkPad Features program).
The communicating device is using an equivalent communication speed
(see page 50).
The infrared ports are cleaned and do not have any spots.
No cable or electrical device is between the computer and the
communicating device.
The distance and angle between the computer and the communicating
device are correct.
The communicating distance might need to be less if:
– The other system is not the same model as your computer.
– There is interference from ambient light. It is recommended that you do
not use infrared communication in bright sunshine or artificial light
conditions.
– The infrared port is not directly facing the other communicating port.
Wireless headphones that use infrared may interfere with infrared
communications. You might hear noise through the headphones, or the
computer might not be able to communicate with other devices through the
infrared port.
Communication can be affected by the light from the LCD on the computer.
To avoid this, open the LCD to a wide angle.
You need to run the same communication application on both computers to
communicate between your computer and another computer device. Refer
to the application manuals for more information.
When using applications that use a conventional serial port and serial cable
to exchange data, your computer infrared ports are used as a replacement
for the serial port and cable. In this case, ThinkPad mode cannot be used.
Incorrect data is sent
between the computer
and device.
Verify that:
The distance and angle between the devices are correct.
The communicating device is using an equivalent communication speed.
There is no device radiating infrared rays, such as remote-controlled devices
or wireless headphones, near the computer or device.
Direct sunlight or fluorescent lamps are not near the computer or device.
250 IBM ThinkPad 760E, 760ED, or 760EL User's Guide
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