5. TROUBLESHOOTING Problem Possible Cause
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).
Solution
Batteries are not inserted Incorrect battery polarity Low charge or depleted batteries
Insert 3 x AA batteries Check battery polarity
No Laser Beam
c1
Replace with new batteries
c2
Corroded battery terminals Clean the battery terminals Defective Instrument
Contact ToughBuilt ® Customer Service
Instrument tilted beyond its ± 4° self-leveling range
Reposition the instrument
b
Depleted batteries
Replace with new batteries
Fluctuating Beam
Temperature is too low or too high Debris on the Laser Beam Window 1 Instrument is placed on an inclined surface (beyond ± 4°) Pendulum Switch 2 is in the UNLOCK position.
Allow the instrument to cool down or warm up
a
Clean the window with a damp lint-free cloth
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 .
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) ± 1/32" (± 0.79mm) 16' (4.8m) ± 1/16” (± 1.6mm) 33' (10m) ± 3/16” (± 4.78mm)
Laser Beam out of leveling calibration
Perform the accuracy check (see the Accuracy check section)
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