Amprobe LM631A, User Manual, Page: 9 / 14

3
that the light source has remained stable.
• Avoid flexing the cable excessively at either end of the cable.
MAINTENANCE
In Case of Difficulties: In the case of improper operation of
the light meter, first review the operating instructions for possible errors
in operation. Check the condition of the batteries. The battery “
+ -
”
symbol appears when the voltage falls below the level where accuracy is
guaranteed. Replace the batteries immediately.
Battery Replacement
To replace the batteries ( 4 – AAA) unscrew the battery hatch screw
and remove the old batteries. Install the new batteries observing the
diagram in the battery area.
Cleaning Procedure
Gently wipe dirt from the surface of the unit with a soft cloth moistened
with a small amount of water or neutral cleanser. Do not use benzene,
alcohol, acetone, ether, paint thinner, lacquer or ketone solvents on
the units, under any circumstances as these may cause deformation or
discoloration.
REPAIR
Read the warranty located at the front of this manual before requesting
warranty or non-warranty repairs. For warranty repairs, any lightmeter
claimed to be defective can be returned to any Amprobe Test Tools
authorized distributor or to a Amprobe Test Tools Service Center for an
over-the-counter exchange for the same or like product. Non-warranty
repairs should be sent to a Amprobe Test Tools Service Center. Please call
Amprobe Test Tools or enquire at your point of purchase for the nearest
location and current repair rates. All light meters returned for warranty
or non-warranty repair or for calibration should be accompanied by
the following information or items: company name, customer’s name,
address, telephone number, proof of purchase (warranty repairs), a