24 | English
2 609 140 621 | (18.7.11) Bosch Power Tools
Troubleshooting –Causes and Corrective Measures
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.
Cause Corrective Measure
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).
Wait until the measuring tool has
reached the operating temperature
Battery low indicator (b) appears
Battery voltage decreasing (measure-
ment still possible)
Replace batteries/rechargeable bat-
teries
Battery low indicator (b) flashing; measurement not possible
Battery voltage too low Replace batteries/rechargeable bat-
teries
“Error”and“––––”indicationindisplay
The angle between the laser beam and
the target is too acute.
Enlarge the angle between the laser
beam and the target
The target surface reflects too intense-
ly (e.g. a mirror) or insufficiently (e.g.
blackfabric),ortheambientlightis too
bright.
Work with the laser target plate 24 (ac-
cessory)
The laser beam outlet 19 or the recep-
tion lens 20 are misted up (e.g. due to
a rapid temperature change).
Wipe the laser beam outlet 19 and/or
the reception lens 20 dry using a soft
cloth
Calculated value is greater than
99999 m/m2/m3.
Divide calculation into intermediate
steps
“Error” indication flashes at in display (top)
Addition/Subtraction of measured val-
ues with different units of measure
Only add/subtract measured values
with the same units of measure
Unreliable measuring result
The target surface does not reflect cor-
rectly (e.g. water, glass).
Cover off the target surface
The laser beam outlet 19 or the recep-
tion lens 20 are covered.
Make sure that the laser beam outlet
19 or the reception lens 20 are unob-
structed
Measuring result not plausible
Wrong reference level set Select reference level that corre-
sponds to measurement
Obstruction in path of laser beam Laser point must be completely on tar-
get surface.
OBJ_DOKU-27449-001.fm Page 24 Monday, July 18, 2011 10:31 AM