Prepared By: Peter Brandt Version: 08 – 20080415
Page
21 of 26
40-6640 Service Manual
4.2.2
Oblique error.
Either vertical or horizontal line is not plumb.
Adjustment required:
If the laser lines are perpendicular to each other and only a small adjustment is needed,
adjust the hexagonal nut shown (Fig. 4-2-E) using a hexagonal wrench key (3 mm).
NOTE: The nut can be accessed by removing the Plastic Screw (see Fig. 4-2-F and 4-2-G).
The outer housing on the instrument does NOT need to be removed.
Fig. 4-2-E
Hexagonal Nut (found inside hole)
Vertical
Reference Line
(COD)
Fig. 4-2-D
Oblique Error
Horizontal
Reference Line
(AOB)
