Alert Symptom Possible causes and solu-
tions
Negative grade entry is not
possible.
The negative grade function is
disabled. Only positive grade
can be entered in the Zone80
DG. To enter negative grade,
enable the negative grade
function. Refer to " Negative
grade - enable/disable".
The “empty battery” icon
flashes.
The Zone80 DG has reached a
low battery condition and
changes the head speed to
7rps. If the receiver detects
the Zone80 DG rotating at
7 rps, it displays a small flash-
ing Zone80 DG.
☞
Check the battery
of the Zone80 DG.
The beam is not emitting from
all sides of the laser.
Beam masking is activated for
two or more sides of the laser.
To de-activate or change beam
masking, refer to " Beam
masking".
It is not possible to enter
grade greater than 10.00% or
3.000%.
The Zone80 DG allows for up
to 10% grade entry in both
axes simultaneously. If the
grade entry for one axis is
greater than 10%, the cross
axis is limited to 3%.
The Zone80 DG is not commu-
nicating with the remote con-
trol.
The Zone80 DG has lost the
communication link to the
remote control.
☞
Ensure that you
are within clear
sight of the
Zone80 DG and
that you have not
exceeded the
100 m (300’)
working range.
Problem Possible Causes Suggested Solutions
The Zone80 DG does not
turn on.
The batteries are low or
dead.
Check the batteries and change or
charge the batteries if necessary. If
the problem continues, return the
Zone80 DG to an authorised service
centre for service.
Troubleshooting
Troubleshooting 55
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