Kyocera Mita KM-4530, Service Manual

Page: 251 / 384

2BC/D
1-6-47
(4) Adjusting the position of the doctor blade (reference)
Perform the following adjustment if carrier or background appears on the copy image.
Procedure
1. Remove the developing unit (see page 1-6-
44).
2. Remove the two screws holding the
developing unit upper seal and then the seal
(see page 1-6-46).
3. Measure the distance between the
developing roller and the doctor blade with a
thickness gauge as shown in Figure, and
adjust the doctor blade until the correct
distances are obtained at the center and ends
of the developing unit housing; the 0.50 mm
gauge should go into the gap and the 0.55
mm one should not.
* The smaller the distance, the lighter the
image; the larger the distance, the darker the
image.
4. Refit all the removed parts.
5. After adjustment, make a test copy to check
for performance.
Figure 1-6-85
(5) Detaching and refitting the developing duct filter
Follow the procedure below to replace the developing duct filter.
Procedure
1. Remove the screw and disconnect the
connector, and then remove the developing
duct cover.
2. Replace the developing duct filter and refit all
the removed parts.
Figure 1-6-86
Adjustment screw Adjustment screw
Adjustment screw
Developing
duct filter