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Troubleshooting
Problem
No Laser
Beam
Flashing
Beam
Power
LED glows
solid RED
Power LED
flashes
RED
Cannot
Switch the
Unit OFF
Contact ToughBuilt
support.
Possible Cause
Batteries are
not inserted
Instrument is
not powered-on
Low battery
charge or dead
batteries
Incorrect
battery polarity
Corroded
battery posts
Corroded
battery terminals
Instrument is in
the LOCKED
position
Voltage is lower
than 4.6 volts
Voltage is lower
than 4.1 volts
Pendulum
Lock/Unlock
Switch is in
the UNLOCKED
position
Customer Service for additional
®
Install 4 x AA alkaline
batteries
Push the Power Button
for 3 seconds
Replace batteries with
new alkaline batteries
Install batteries observing
polarity
Replace batteries
Clean terminals
In Locked and tilted mode,
it is normal for the laser
beam to fluctuate
5 seconds ON,
1 second OFF
Battery power is reaching
the depleted zone.
Replace batteries
Replace batteries with
new alkaline batteries
Rotate the Lock/Unlock
Switch switch to the
LOCKED position
24
Solution
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