English
•Replace the 9 volt battery. Turn the unit on.
•If the detector still does not turn on, take the detector to a DEWALT service center.
THE DETECTOR’S SPEAKER MAKES NO SOUND.
•Ensure that the detector is on.
•Press the power/volume button. It will toggle from high, to low, to mute.
•Ensure that the rotary laser is spinning and that it is emitting a laser beam.
•If the detector is still not making any sound, take it to a DEWALT service center.
THE DETECTOR DOES NOT RESPOND TO A STATIONARY LASER BEAM.
•The DEWALT Digital Laser Detector has been designed to work only with rotary lasers.
THE DETECTOR GIVES OFF A TONE BUT THE LCD DISPLAY WINDOW DOES NOT FUNCTION.
•If the detector is very cold, allow it to warm up in a heated area.
•If the LCD display window is still not functioning, take the detector to a DEWALT service center.
Construction Grade Rod
DANGER: NEVER attempt to use a grade rod in a storm or near overhanging electric wires. Death or serious personal injury will occur.
Some laser kits include a grade rod. The DEWALT Grade Rod is marked with measurement scales on both sides and is constructed in telescoping sections. A
The front of the grade rod has the measurement FIG. 13 scale starting at the bottom. Use this for measuring 
from the ground up when grading or leveling 
jobs.
The back of the grade rod is designed to measure 
the height of ceilings, joists, etc. Fully extend the top section of the grade rod until the button locks into the previous section. Extend that section either until it locks into the adjacent section or until the grade rod touches the ceiling or joist. The height is read where the last extended section exits the previous lower section, as shown in Figure 13.
Using the Laser with a Wall Mount (Fig. 14, 15)
Some laser kits include a Wall Mount. It can be used for attaching the tool to track or ceiling angle and to aid in acoustical ceiling installation. Follow the directions below for using the wall mount.
CAUTION: Before attaching the laser level to wall track or ceiling angle, be sure that the track or angle is properly secured.
1.Place the laser on the mounting base (KK) aligning the hole (LL) on the bottom of the laser with the hole (MM) in the mounting base. Turn the mounting knob (NN) to secure the laser.
2.With the wall mount measuring scale (OO) facing you, loosen the wall mount clamp locking knob (PP) to open the clamp jaws.
3.Position the clamp jaws around the wall track or ceiling angle and tighten the wall mount clamp locking knob (PP) to close the clamp jaws onto the track. Be sure that the wall mount clamp locking knob is securely tightened before proceeding.
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