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©2018 Johnson Level & Tool
8. Troubleshooting
Symptom
Unit will not power on
Possible Cause
Batteries depleted
Battery case not secure
Polarity reversed
Solution
Replace batteries
Secure battery case
with set screw
Install batteries with
proper polarity
Unit powers on briefly
Batteries depleted
Replace batteries
Unit will not turn off
Incorrect power button
operation
Press and hold power
button for 3 seconds to
power off the level
Battery indicator
flashing
Batteries are low
Replace batteries
Display reads “OUT”
Unit tilted forward /
backwards in excess of
allowable range
Do not tilt the level
beyond its allowable
range
Backlight not on
Backlight is off
Backlight timed out
Turn on backlight
Turn on backlight or
move level to reactivate
the backlight
2842i_Manuals 4/27/18 2:09 PM Page 18