Adjustment
As described in the section “Checking spot calibration”, mark the deviation
of the laser using the points (1) and (3) on a wall. If no alterations have
been made to the laser beam, the corresponding target point is exactly
between the two points.
• Remove the cover plug (12). Secure the pendulum (4) using the
transport lock (position 4b).
• Use a screwdriver to adjust the adjusting screws through the opening.
Turning the adjusting screw in a clockwise direction moves the beam
upwards, while turning anticlockwise moves it downwards.
• Loosen the transport lock (4) and check the adjustment. If the centre-
point of the beam is exactly between the two points (1) and (3), the laser
is accurately adjusted.
• Check the calibration once again as described in the section “Checking
spot calibration”.
b) Checking line calibration
To perform this check, you must first generate a reference - for example,
by fixing a plumb line near to a wall or by marking several points vertically
below one another using the beam separator prism (optional extra) after
checking spot calibration.
Set up the unit in front of the reference mark (plumb line or points) and
compare the beam with the reference. The deviation between the centre of
the line and the reference mark should not exceed 1 mm over a line length
of 2 metres.
N.B.
If the deviation is excessive (e.g. following the effect of impact on the unit)
despite the fact that the spot calibration is inside the tolerance, the unit
should be taken to the dealer in the original case for repair.
15
Battery changing
Push the battery compartment cover in an upward direction and remove.
Slightly pull out the battery holder. Pull off the clip-on contacts and remove
the battery holder. Insert new batteries in accordance with the instructions
in the battery holder. Only use 1.5 V mignon (size AA) batteries.
