Compaq Armada E700 Armada E700 - Page 47

Table 2-13, Solving Infrared, Problems

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Problem Cannot communicate with another computer. Cannot communicate with another computer (cont.) Cannot transmit data. Table 2-13 Solving Infrared Problems Possible Cause Solution The appropriate software is Install the appropriate software not running on both on the second device, start the computers. second device, and start the program on both computers. The other computer does not Communication between infrared have an IrDA-compliant devices must use the same infrared port. Your Compaq communications protocol. Check computer uses the IrDA the manufacturer's instructions for communications protocol. connecting with infrared devices or try connecting with a device you know to be IrDA-compliant. The pathway between the Remove the obstruction, align infrared ports is obstructed, the infrared ports to within 30 one port is more than 30 degrees, and position computers degrees (plus or minus 15 within 1.5 feet (about 0.5 meter) degrees off the center line) of each other. from the other, or the ports are more than one meter apart. There is an interrupt request Check for IRQ conflicts in the (IRQ) conflict. Device Manager If two devices have the same IRQ address, reassign one of the devices. There is a baud rate conflict. Select the same baud rate for both computers. There is a conflict with the # Select the same # bits setting for bits. both computers. There is a stop byte conflict. Select the same stop byte for both computers. There is a parity conflict. Select the same parity setting for both computers. Direct sunlight, fluorescent Remove the interfering light light, or flashing incandescent source(s). light is close to the infrared connections. There is interference from Keep remote control units such other wireless devices. as wireless headphones and other audio devices away from the infrared connections. There is a physical Do not place objects that will obstruction in the way. interfere with a line-of-sight data transmission between the two units. One of the units was moved Do not move either unit during during data transmission. data transmission. The orientation of the units is Adjust the devices so that they wrong. point directly at each other. The distance between the Verify that devices are not more units is too great. than 1.5 feet (0.5 meter) apart. Continued 2-18 Troubleshooting

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2-18
Troubleshooting
Table 2-13
Solving Infrared
Problems
Problem
Possible Cause
Solution
Cannot communicate with
another computer
.
The appropriate software is
not running on both
computers.
Install the appropriate software
on the second device, start the
second device, and start the
program on both computers.
The other computer does not
have an IrDA-compliant
infrared port. Your Compaq
computer uses the IrDA
communications protocol.
Communication between infrared
devices must use the same
communications protocol. Check
the manufacturer’s instructions for
connecting with infrared devices
or try connecting with a device
you know to be IrDA-compliant.
Cannot communicate with
another computer
(cont.)
The pathway between the
infrared ports is obstructed,
one port is more than 30
degrees (plus or minus 15
degrees off the center line)
from the other, or the ports
are more than one meter
apart.
Remove the obstruction, align
the infrared ports to within 30
degrees, and position computers
within 1.5 feet (about 0.5 meter)
of each other.
There is an interrupt request
(IRQ) conflict.
Check for IRQ conflicts in the
Device Manager
If two devices
have the same IRQ address,
reassign one of the devices.
There is a baud rate conflict.
Select the same baud rate for
both computers.
There is a conflict with the #
bits.
Select the same # bits setting for
both computers.
There is a stop byte conflict.
Select the same stop byte for
both computers.
There is a parity conflict.
Select the same parity setting for
both computers.
Cannot transmit data.
Direct sunlight, fluorescent
light, or flashing incandescent
light is close to the infrared
connections.
Remove the interfering light
source(s).
There is interference from
other wireless devices.
Keep remote control units such
as wireless headphones and
other audio devices away from
the infrared connections.
There is a physical
obstruction in the way.
Do not place objects that will
interfere with a line-of-sight data
transmission between the two
units.
One of the units was moved
during data transmission.
Do not move either unit during
data transmission.
The orientation of the units is
wrong.
Adjust the devices so that they
point directly at each other.
The distance between the
units is too great.
Verify that devices are not more
than 1.5 feet (0.5 meter) apart.
Continued