IBM C79EGMST manual Problems, Troubleshooting Charts, Infrared

2. Close a parallel port panel.

1. Click onOK

to disable DMA for the infrared port.

You cannot use DMA If you enable ECP and choose DMA3 (default value) for the parallel po channels for both the might see the panel asking if you want to disable DMA for the infrar parallel port and the the following to use DMA channels for both parallel and infrared port: infrared port.

Communication can be affected by the light from the display on the c To avoid this, open the display to a wide angle.

The same communication application has to be running on your computer and the other computer. Refer to the application manuals for more informati

ThinkPad mode cannot be used if you are using a conventional communicati application that uses the serial port and cable for data exchange. ( the infrared port is a substitute for them.)

Incorrect data is sentMake sure that:

between your computer

The distance and angle between your computer and the device is w

and a communicating

set range.

device.

The communication speeds are the same.

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

You are not operating under direct sunlight.

No fluorescent lamps are near your computer or the communicating dev

Title: C79EGMST CreationDate: 02/10/98 09:24:42

Troubleshooting Charts

Infrared	Communication			Problems
Problem			Action
Your computer	cannot		Make	sure that:
communicate with other			The communication speeds are the same.
devices using	the
		infrared
port.			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 w
			set		range.
			The		other computer is the same			model	as	yours.
			You		are not operating under direct sunlight.
			The		infrared	ports are	directly	facing		each	other.

3. Click on theInfrared device button to open the infrared panel.

4. Choose DMA0 or DMA1 for infrared port on the panel.

5.If you see the panel prompting if you want to disable DMA for a device, clickOK .on

Chapter 4. Solving Computer Problems131