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Maintenance and repair
Battery change
Note
Make sure that the surface of the device is dry and the
device is switched off.
A battery change is required when the error message INFO 203
appears on the display or when the device can no longer be
switched on (see chapter Inserting the batteries).
Cleaning
Clean the device with a soft, damp and lint-free cloth. Make
sure that no moisture enters the housing. Do not use any
sprays, solvents, alcohol-based cleaning agents or abrasive
cleaners, but only clean water to moisten the cloth.
Repair
Do not modify the device or install any spare parts. For repairs
or device testing, contact the manufacturer.
EN
Errors and faults
The device has been checked for proper functioning several
times during production. If malfunctions occur nonetheless,
check the device according to the following list.
The following fault indications can appear in the lower
measurement value display together with the word INFO:
Indicati
Cause
on
101
The reception of the
reflected signal is too
weak.
102
The reception of the
reflected signal is too
strong.
201
The ambient light is
too intense.
203
The batteries are
almost empty.
301
The temperature is
too high.
302
The temperature is
too low.
401
Hardware fault
402
Calculation error
laser distance measuring device BD21 / BD26
Remedy
Repeat measurement on
another surface with better
reflective properties or use a
target plate.
Change the ambient light
conditions for the
measurement.
Change the batteries, see
chapter Battery change.
Allow the device to cool down.
Observe the permissible
operating temperature
according to the Technical data
chapter.
Allow the device to warm up.
Observe the permissible
operating temperature
according to the Technical data
chapter.
Repeatedly switch the device
on and off. If the symbol does
not disappear, please contact
your retailer.
Repeat the measurement. Pay
attention to the measurement
sequence and position of the
device.
11
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