Compaq Armada M700 Series Maintenance And Service Manual page 50

Table 2-13
continued
Problem
Cannot communicate
with another computer
(continued).
Cannot transmit data.
Infrared port doesn't
work.
Problem
Screen is blank and
keyboard is working.
Embedded numeric
keypad on computer
keyboard is disabled.
Possible Cause
There is a conflict with the #
bits.
There is a stop byte conflict.
There is a parity conflict.
Direct sunlight, 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.
Direct sunlight, fluorescent
light, or flashing incandescent
light is close to the infrared
connections.
There is interference from
other wireless devices.
IR has been disabled.
Table 2-14
Solving Keyboard Problems
Possible Cause
A screen timeout has
been initiated..
QuickLock/QuickBlank
has been initiated
LCD has been disabled.
Num Lock function is not
turned on
Solution
Select the same # bits setting for
both computers.
Select the same stop byte for both
computers.
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.
Solution
Press any key to refresh the screen.
To enable the keyboard and return
your information to the screen, enter
your power-on password.
Press Fn+F4 to cycle from external
monitor to internal LCD.
Press Fn + Num Lk to enable the
Num Lock function and embedded
numeric keypad.
Troubleshooting 2-19