5. TROUBLESHOOTING
5. Position the instrument on the other side of the door opening directly behind point b . Allow the instrument to self-level and ensure the vertical laser line aligns with points a and b. 6. Mark the center of the vertical line at the upper edge of the door opening (point c2).
Problem
Possible Cause
Solution
Batteries are not inserted Incorrect battery polarity
Insert 3 x AA batteries Check battery polarity
c1
c2
No Laser Beam
Low charge or depleted batteries
Replace with new batteries
Corroded battery terminals
Clean the battery terminals
b
Contact ToughBuilt ® Customer Service
Defective Instrument
Instrument tilted beyond its ± 4° self-leveling range
Reposition the instrument
a
Depleted batteries
Replace with new batteries
Fluctuating Beam
Allow the instrument to cool down or warm up Clean the window with a damp lint-free cloth
Temperature is too low or too high
Debris on the Laser Beam Window 1 Instrument is placed on an inclined surface (beyond ± 4°)
7. Measure the distance between points c1 and c2 at the upper edge of the door opening that indicates the actual deviation of the instrument from the vertical plane. If the actual deviation is greater than the allowable deviation for the corresponding Ceiling Height in the table below, the instrument must be serviced. Ceiling Height Allowable Deviation 7' (2.1m) 1/16" (1.6mm) 10' (3m) 1/8" (3.2mm) 15' (4.5m) 3/16" (4.78mm)
Does Not Self-Level Cannot Power-OFF Out of Level Laser Beam
Place the instrument on a level surface
Slide the Pendulum Switch 2 to the LOCK position, then press the Power ON/OFF button 5 . Perform the accuracy check (see the Accuracy check section)
Pendulum Switch 2 is in the UNLOCK position. Laser Beam out of leveling calibration
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