Craftsman CMHT77630 Instructions Manual page 14

Troubleshooting
E
The Laser Does Not Turn On
• Check the AA batteries to make sure:
• Each battery is installed correctly, according to (+)
and (–) listed inside the battery compartment.
• The battery contacts are clean and free of rust or
corrosion.
• The batteries are new, high-quality, name brand
batteries to reduce the chance of battery leakage.
• Make sure the AA batteries are in proper working
condition. If in doubt, try installing new batteries.
• When using rechargeable batteries, make sure the
batteries are fully charged.
• Be sure to keep the laser dry.
• If the laser unit is heated above 120 ˚F (50 ˚C), 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 using the Power/
Transport Lock switch before cooling to its proper
operating temperature.
The Laser Beams Flash
When in self-leveling mode, the lasers are designed
to self-level up to an average of 4° in all directions. If
the laser is tilted so much that the internal mechanism
cannot level itself (or the laser is not level when in
manual mode), the laser beams will flash indicating
that the tilt range has been exceeded.
THE FLASHING BEAMS CREATED BY THE LASER ARE
NOT LEVEL OR PLUMB AND SHOULD NOT BE USED
FOR DETERMINING OR MARKING LEVEL OR PLUMB. Try
repositioning the laser on a more level surface.
14
The Laser Beams Will Not Stop Moving
The laser is a precision instrument. Therefore, if it is
not positioned on a stable (and motionless) surface,
the laser will continue to try to find level. If the beam
will not stop moving, try placing the laser on a more
stable surface. Also, try to make sure that the surface is
relatively flat and level, so that the laser is stable.
Service and Repairs
Note: Disassembling the laser level will void all
warranties on the product.
To assure product SAFETY and RELIABILITY, repairs,
maintenance and adjustment should be performed by
authorized service centers. Service or maintenance
performed by unqualified personnel may result in a risk
of injury. To locate your nearest CRAFTSMAN service
center, go to www.CRAFTSMAN.com
Warranty
Go to www.CRAFTSMAN.com for the latest warranty
information..