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11.TROUBLESHOOTING
Check to see the instrument referring to the error list or the following troubleshooting list when you notice the
failure of the instrument.
If the instrument can't be recovered or the failure isn't written in the following list, please contact your local
dealer.
Conditions
Causes
Countermeasures
Laser beam does not
emit
1) Battery level is low.
2) The laser is turned off because the
laser ON/OFF switch of the remote
controller is pushed.
1) Recharge or replace the batteries
with new ones.
2) Push the laser ON/OFF switch of
the remote controller, then the
laser is turned on.
Laser beam blinks
1) When Level Warning Indicator blinks,
the instrument is tilted beyond the
self-leveling range (laser blinks
slowly).
2) Any shock or vibration to the unit
produces unstable condition causing
beam to blink.
1) Reposition the instrument until the
level warning indicator disappears.
2) Eliminate the source of
disturbance to the unit.
Laser beam emits but
grade setting is not
possible
1) The instrument is in lock mode.
2) The value entered is out of the grade
range.
3) When Level Warning Indicator blinks,
the instrument is tilted beyond the
self-leveling range (laser blinks
slowly).
4) Battery level is low.
1) Press the [Set/Lock] key on the
instrument to release the lock
function.
2) Grade entry must be in the range
of -15 to 40%.
3) Reposition the instrument until the
level warning indicator disappears.
4) Recharge or replace the batteries
with new ones.
Laser beam emits but
line setting is not
possible.
1) The instrument is in lock mode.
2) The laser beam has reached the limit
of line adjusting range.
1) Press the [Set/Lock] key on the
instrument to release the lock
function.
2) Center the line adjustment and aim
instrument so laser is roughly
aimed at target.
Remote control does
not function.
1) The instrument is in lock mode.
2) The battery power of remote control
is low.
1) Press the [Set/Lock] key on the
instrument to release the lock
function.
2) Replace the batteries.
The laser beam is
unstable.
1) The laser beam is refracted due to
temperature differences within the
pipe.
2) The laser beam is refracting and
reflecting due to fog and/or mist.
1) When the pipe is laid, the trench
must be backfilled immediately to
help maintain temperature stability.
2) Use a blower (commercially-
available) to move air through the
pipe to blend the air and remove
mist or fog.
• Cover the pipe to prevent heat
build up inside the pipe.
• Clear the mist or fog.
The laser position
shifts over time
passed.
1) The pipe may be sinking.
2) The target is not securely held.
1) Confirm the pipe grade setting
using a level.
2) Secure the target within its holder.
