Troubleshooting; The Laser Does Not Turn On - DeWalt DW089 Original Instruction

E NGL I S H
1. Set up the laser in one corner of the floor and turn on the forward
vertical beam.
2. Mark the centre of the beam at three locations (A, B and C) on the
floor along the laser line. Mark B should be at the midpoint of the
laser line.
3. Move the laser to mark B and turn on both vertical beams.
4. Position the beam crossing precisely at mark B, with the forward
beam aligned with mark C.
5. Mark a location (D) along the side vertical beam at least 5 m (18')
away from the unit.
6. Rotate the laser over mark B so that the forward vertical beam
now passes through mark D.
7. Mark the location (E) where the side vertical beam passes by
mark A.
8. Measure the distance between marks A and E. If the measurement
is greater than the values shown in Table 4, the laser must be
serviced at an authorised service centre.

Troubleshooting

THE LASER DOES NOT TURN ON

• Make sure batteries are installed according to (+) and (–) on the
inside of the battery door.
• Make sure the batteries are in proper working condition. If in
doubt, try installing new batteries.
• Make sure that the battery contacts are clean and free of rust or
corrosion. Be sure to keep the laser level dry and use only new,
high-quality, name brand batteries to reduce the chance of battery
leakage.
• If the laser unit is heated above 50 °C (120 °F), the unit will not
turn on. If the laser has been stored in extremely hot temperatures,
allow it to cool. The laser level will not be damaged by pressing the
on/off button before cooling to its proper operating temperature.
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