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12. Trouble Shooting
Symptom
Laser will not turn on
Laser turns off after a
short time
Laser is not accurately
reading level
Laser light appears dim
Laser light is blinking
Laser will not self-level
©2023 Johnson Level & Tool
Possible Cause
Batteries missing or
depleted
Alkaline battery
polarity incorrect
Batteries depleted
Laser is out of
calibration MORE
THAN 1/8" at 35'
Batteries are weak
Improper battery type
Ambient temperature
too high/low
Laser is out of
self-leveling range
Laser is out of
self-leveling range
Compensator is locked
Solution
Change the batteries
Check battery polarity
Change or charge the
batteries
Return to Johnson
dealer for service
Change or charge the
batteries
Ensure high quality
Alkaline batteries are
used
Ensure temperature
is within operating
range listed under
specifications
Position laser within 4°
of level so that it can
self-level
Position laser within 4°
of level so that it can
self-level
Unlock compensator to
allow the pendulum to
self-level
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