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Bosch Power Tools 2 609 140 582 | (29.7.08)
Troubleshooting – Causes and
Corrective Measures
The measuring tool monitors the
correct function for each meas-
urement. When a defect is deter-
mined, only the symbol shown
aside flashes in the display. In this
case, or when the above mentioned corrective
measures cannot correct an error, 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 measur-
ing section with a length of approx. 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 measure-
ment must be smooth and reflect well.
– Measure the distance 10 times after another.
The measuring error must not amount to more
than a maximum of
± 2.0 mm. Keep a record of
the measurements in order to compare the ac-
curacy at a later time.
Cause Corrective
Measure
Temperature indicator (b) flashes; measure-
ment not possible
The measuring tool is
outside the operating
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 oper-
ating temperature
Battery indication (a) is indicated
Battery voltage decreas-
ing (measurement still
possible)
Replace batteries
Battery indication (a) flashes, measurement
not possible
Battery voltage too low Replace batteries
“Error” and “
––––” indication in display
The angle between the
laser beam and the target
is too acute.
Enlargen the angle
between the laser
beam and the
target
The target surface reflects
too intensely (e.g. a mir-
ror) or insufficiently (e.g.
black fabric), or the ambi-
ent light is too bright.
Work with the
laser target plate
22 (accessory)
The laser beam outlet 18
or the reception lens 19
are misted up (e.g. due to
a rapid temperature
change).
Wipe the laser
beam outlet 18
and/or the recep-
tion lens 19 dry
using a soft cloth
Calculated value is great-
er than 99999 m/m
2
/m
3
.
Divide calculation
into intermediate
steps
“Error” indication flashes at in display (top)
Addition/Subtraction of
measured values with dif-
ferent units of measure
Only add/subtract
measured values
with the same
units of measure
Unreliable measuring result
The target surface does
not reflect correctly
(e.g. water, glass).
Cover off the
target surface
The laser beam outlet 18
or the reception lens 19
are covered.
Make sure that the
laser beam outlet
18 or the recep-
tion lens 19 are un-
obstructed
Measuring result not plausible
Wrong reference level set Select reference
level that corre-
sponds to meas-
urement
Obstruction in path of
laser beam
Laser point must
be completely on
target surface.
Cause Corrective
Measure
OBJ_BUCH-724-001.book Page 21 Tuesday, July 29, 2008 1:25 PM
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