Compaq Prosignia 170 Series Maintenance & Service Manual page 115

There is a parity
conflict.
Cannot transmit Direct sunlight,
data. fluorescent light, or
flashing incandescent
light is close to the
infrared connections.
There is interference
from other wireless
devices.
There is a physical
obstruction in the way.
One of the units was
moved during data
transmission.
The orientation of the
units is wrong.
The distance between
the units is too great.
Infrared port Direct sunlight,
doesn't work. fluorescent light, or
flashing incandescent
light is close to the
infrared connections.
There is interference
from other wireless
devices.
IR has been disabled.
Return to the top.
Troubleshooting without Diagnostics Continued
Select the same parity setting for
both computers
Remove the interfering light
source(s).
Keep remote control units such as
wireless headphones and other audio
devices away from the infrared
connections.
Do not place objects that will
interfere with a line-of-sight data
transmission between the two units.
Do not move either unit during data
transmission.
Adjust the devices so that they point
directly at each other.
Verify that devices are not more than
1.5 feet (0.5 meter) apart.
Remove the interfering light
source(s).
Keep remote control units such as
wireless headphones and other audio
devices away from the infrared
connections.
Run IR configuration utility in Control
Panel.
.