Kyocera KM-4230 Service Manual page 362

( 3 ) 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 two screws holding the developing unit upper seal, and then the seal.
∗ When refitting the seal, fit while holding it upward.
2. Remove the two screws, disengage the two hooks and detach the developing unit
upper cover.
Developing unit upper cover
Developing unit upper seal
Screws
Figure 3-3-63 Detaching the developing unit upper cover
Screws
Hook
Hook
3-3-53
2A3/4