IBM R30 manual Infrared port problems, Solving computer problems

Solving computer problems

Problem: The cursor does not move after the computer awakens from one of the power management modes.

Solution: Make sure you followed the instructions in the on-board help, Access ThinkPad correctly if you reinstalled Windows with the Advanced Power Management (APM) option.

Infrared port problems

Problem: Your computer cannot communicate with other devices through the infrared port.

Solution: Make sure that:

vThe communication speeds are the same.

vThe infrared ports are clean.

vNo objects are between the computer and the communicating device.

vThe distance and angle between your computer and the device are within the specified ranges.

vYou are not operating under direct sunlight.

vThe infrared port is directly facing the other communication port.

vThe communication application running on your computer is compatible with that running on the other computer. Refer to the application manuals for more information.

Problem: Incorrect data is sent between your computer and a communicating device.

Solution: Make sure that:

vThe distance and angle between your computer and the device are within the ranges.

vThe communication speeds are the same.

vThere are no other devices that radiate infrared rays, such as remote-controlled devices or wireless headphones, near your computer or the communicating device.

vYou are not operating under direct sunlight.

vNo fluorescent lamps are near your computer or the communicating device.

Problem: You cannot use DMA channels for both the parallel connector and the infrared port.

Solution: If you enable ECP and choose DMA3 (the default value) for the parallel connector in the ThinkPad Configuration program, you might be asked whether you want to disable DMA for the infrared port. To use DMA channels for both the parallel and infrared ports, do the following:

22ThinkPad® R30 Series Service and Troubleshooting Guide