User's Manual

41 LS420 Universal User Manual V2.91 2003-01-21.doc
6.6 The Display Unit Is Always In Alarm Mode, the Limit+ or Limit-
warning light is flashing
The display is always
in alarm mode: the
" Limit + " warning
light is flashing.
Press the "Hoist" button until
the boom angle is displayed.
Does the angle
shown correspond to
actual boom angle.
The maximum angle limit
appears to be reached: press
the "Limit +" button to verify
that this limit has been
correctly set, refer to the
adjusting angle limit section of
the user manual.
Press the "Bypass" button to
return to the main operating
screen. Press the "Hoist"
button until the boom angle is
shown.
Verify the angle sensor
installation. Reinstall or
recalibrate if necessary, see
the angle sensor installation
section of the user manual.
Press the "Test" button to
verify battery status.
Is the
boom angle
shown less than the
maximum angle
limit set?
Is the
"Limit +" warning light
still flashing?
The maximum
angle limit warning
appears to be
functioning normally:
refer to the user
manual for a
description of this
warning.
Please contact your
service representative.
Yes
No
Yes
Yes
Are angle
sensor batteries
low?
Verify battery installation
or change batteries if
necessary, see the
changing angle sensor
batteries of the user
manual.
Yes
No
Verify
communication
between angle
sensor and display
unit (Section 6.4).
No
No
The display is always
in alarm mode: the
" Limit - " warning light
is flashing.
Press the "Hoist" button until
the boom angle is displayed.
Does the angle
shown correspond to
actual boom angle.
The minimum angle limit
appears to be reached: press
the "Limit -" button to verify
that this limit has been
correctly set, refer to the
adjusting angle limit section
of the user manual.
Press the "Bypass" button to
return to the main operating
screen. Press the "Hoist"
button until the boom angle
is shown.
Is the
boom angle
shown greater than the
maximum angle
limit set?
Is the
"Limit -" warning light still
flashing?
The minimum
angle limit warning
appears to be
functioning normally:
refer to the user
manual for a
description of this
warning.
Please contact your
service representative.
Yes
No
Yes
Yes
No
No