2A3/4
3-3-52
( 2 ) Adjusting the position of the magnetic brush (developing roller) (reference)
Perform the following adjustment if the image is abnormally dark or light.
• Before starting this adjustment, ensure that the doctor blade is installed correctly and
that the correct amount of developer is present.
<Procedure>
1. Loosen the hexagonal socket head screw holding the developing sleeve front
bushing using a hexagonal wrench.
2. Turn the developing roller shaft using a straight screwdriver until the distance
between the top of the magnetic brush and the bottom of the developing unit
housing is 15 mm (reference).
3. Tighten the hexagonal socket head screw to secure the developing roller shaft.
∗ If the distance is smaller than the specified value, carrier or background appears on
the copy image.
4. After adjustment, make a test copy to check for performance.
Developing sleeve front bushing
Developing roller shaft
Hexagonal socket head screw
A
A=15mm
Figure 3-3-62 Adjusting the position of the magnetic brush
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