Johnson JLX 40-6590 Quick Start Manual Download Page 2

www.johnsonlevel.com/manuals

DUAL-AXIS SLOPE MODE

Dual-axis slope mode angles the laser beam in X and Y directions, for 

example when sloping a concrete slab towards a single corner. 

Dual-slope mode may be used in either horizontal or vertical mode. 

Vertical slope mode can speed up the process of establishing 

reference lines. 

When in dual-slope mode, the tilt indicator will not be functional. 

Ensure the laser is not bumped while operating in dual-slope mode. 

To enter dual-slope mode:
1.  Tap      on the remote (not the detector) to start dual-slope mode. 
2.  The X axis indicator will blink. Use       and      to adjust the slope in 

the X axis. Tap for minor adjustments, or press and hold for larger 

adjustments. 

3.  Tap      on the remote to toggle axis and set slope in the Y 

direction. The Y axis indicator will blink. Use      and      to adjust 

the slope in the Y axis. 

4.  If the laser exceeds its slope range, the rotation will stop, the laser 

will flash, and the alarm will sound. If this happens, reduce the 

slope in either axis until the laser resumes operation. 

5.  Exit dual slope mode by holding      for 3 seconds. The laser will 

self level and begin to spin horizontally or vertically.

Pro Tip: 

Instead of setting slope manually, use the tracking function. 

In most cases, this will speed up the process of setting slope. 
If you’re using a different detector than the one that came with your 

rotary, you won’t be able to use the tracking function and manual 

slope mode will be required.
Also, in high wind with a grade rod, detector movement can cause  

instabilities in steadying the detector in tracking mode. Use manual 

slope mode instead. 

SCAN MODE

Scan mode can be used to simulate a laser line, or to emit a laser dot. 

Both modes increase the visibility of the laser when working without 

a detector. 
1.  While the laser is rotating, press      to change from a rotational 

laser to a long laser line, short laser line, or dot. 

2.  Rotate the line or dot using      or      . 
3.  To exit scan mode, press     . The laser will begin to rotate 

normally. 

We want to get you up and running as quickly as possible - but this quick start guide is not a replacement for reading and understanding your  

operator’s manual! For complete safety & operating instructions, refer to the operator’s manual included with your rotary laser, or scan the QR code.

TILT INDICATOR

The tilt indicator (tilt mode) disables the laser if it’s bumped while 

operating,  preventing you from taking inaccurate measurements.
Tilt mode is enabled by default, indicated by the tilt mode LED.
1.  The Tilt Mode LED will flash for 30 seconds. During this time, the 

laser will automatically re-level and restart if bumped. This gives 

you time to make any necessary final adjustments to the laser.

2.  After 30 seconds, the Tilt Mode LED will remain steady on, indi-

cating Tilt Mode is active. Any disturbance to the laser will cause it 

to stop spinning and flash to alert you. 

3.  Reset the laser after a tilt event or exit tilt mode by pressing     .

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