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OBJ_DOKU-27449-001.fm Page 24 Monday, July 18, 2011 10:31 AM
24 | English
Troubleshooting
Causes and Corrective Measures
–
Cause
Temperature warning indicator (c) flashing; measurement not possible
The measuring tool is outside the oper-
ating temperature range from – 10 °C
to + 50 °C (in the function continuous
measurement up to +40 °C).
Battery low indicator (b) appears
Battery voltage decreasing (measure-
ment still possible)
Battery low indicator (b) flashing; measurement not possible
Battery voltage too low
"Error" and "––––" indication in display
The angle between the laser beam and
the target is too acute.
The target surface reflects too intense-
ly (e.g. a mirror) or insufficiently (e.g.
black fabric), or the ambient light is too
bright.
The laser beam outlet 19 or the recep-
tion lens 20 are misted up (e.g. due to
a rapid temperature change).
Calculated value is greater than
2
3
99999 m/m
/m
.
"Error" indication flashes at in display (top)
Addition/Subtraction of measured val-
ues with different units of measure
Unreliable measuring result
The target surface does not reflect cor-
rectly (e.g. water, glass).
The laser beam outlet 19 or the recep-
tion lens 20 are covered.
Measuring result not plausible
Wrong reference level set
Obstruction in path of laser beam
The measuring tool monitors the correct function for each
measurement. When a defect is determined, only the symbol
shown aside flashes in the display. In this case, or when the
above mentioned corrective measures cannot correct an er-
ror, have the measuring tool checked by an after-sales service
agent for Bosch power tools.
Accuracy Check of the Measuring Tool
The accuracy of the measuring tool can be checked as follows:
– Select a permanently unchangeable measuring section with a length of ap-
prox. 3 to 10 metres; its length must be precisely known (e.g. the width of a
room or a door opening). The measuring distance must be indoors; the target
surface for the measurement must be smooth and reflect well.
– Measure the distance 10 times after another.
2 609 140 621 | (18.7.11)
Corrective Measure
Wait until the measuring tool has
reached the operating temperature
Replace batteries/rechargeable bat-
teries
Replace batteries/rechargeable bat-
teries
Enlarge the angle between the laser
beam and the target
Work with the laser target plate 24 (ac-
cessory)
Wipe the laser beam outlet 19 and/or
the reception lens 20 dry using a soft
cloth
Divide calculation into intermediate
steps
Only add/subtract measured values
with the same units of measure
Cover off the target surface
Make sure that the laser beam outlet
19 or the reception lens 20 are unob-
structed
Select reference level that corre-
sponds to measurement
Laser point must be completely on tar-
get surface.
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