User's Manual

43 LS420 Universal User Manual V2.91 2003-01-21.doc
6.8 Radio Communication Problem
Radio communication between sensor(s) and cabin mounted display unit faulty.
Press the "Test" button and verify the sensor ID #. The ID # for each sensor can be found on the sensor itself or on any invoice
or shipping document for that sensor. Note that the ID # of older A2B switches is indicated on the A2B switch body in binary
form. The binary to decimel conversion procedure is detailed in the A2B calibration mode section of the distributor manual.
Does the
display unit indicate
the correct ID # for
the sensor?
Yes
No
Does the
display unit indicate
"0" or "5535" as the
sensor ID #?
Yes
The sensor chip's memory has been erased, please refer to
the technical manual or contact your service representative.
No
Visually inspect the antennas of the sensor
and the cabin mounted display unit.
Is there a clear and
direct line of sight between the sensor antenna and the
antenna of the display unit?
Yes
Are both the sensor and
the display unit antennas clear of all contact with any metal
object at all times?
Yes
Are both the sensor
and the display unit antennas complete and
undamaged?
Reinstall either the display unit, the
sensor or both such that there is a clear
and direct line of sight between the two
antennas at all times.
No
Reinstall either the display unit or
the sensor such that both antennas are
clear of all contact with any metal
including cables, chains, the boom,
or the cabin itself.
No
No
A damaged antenna may need replacing.
To replace the antenna of a load cell, an angle
sensor or a wind speed sensor please see the
appropriate section of the user manual. If an
A2B switch antenna needs to be replaced please
contact your service representative.
Yes
If it is safe to do so, verify that the sensor is operational by observing its red LED during a change
in condition (change the boom angle for an angle sensor, pull the wire whip for an A2B switch,
change the load for a load cell, change the apparent wind speed for a wind sensor).
If either the sensor or the display unit has
recently been installed or replaced, the display
unit may require recalibration. If display unit's
memory has been affected by a lightning strike or
other electrical event it may need reprogramming.
Refer to the technical manual or contact your
service representative.
Does the
sensor appear
operational?
No
Verify sensor batteries,
reinstall or replace if
necessary, see the
appropriate section of
the user manual.
Does the
sensor appear
operational?
There appears to be a
problem with the sensor,
please contact your service
representative.
No