Kyocera KM-4230 Service Manual page 337

2A3/4
( 3 ) Replacing the laser scanner unit
Take the following procedure when the laser scanner unit is to be checked or replaced.
Caution: After replacing the laser scanner unit, proceed to (5) Adjusting scanner image
lateral squareness (reference).
<Procedure>
1. Remove the SRDF, rear cover, upper rear cover, upper right cover and upper left
cover.
2. Remove the screws holding the front cover and then the cover.
3. Pull the image formation unit out.
4. Remove the four screws holding the operation unit lower and inner covers and then
the covers.
5. Detach the three connectors and clamp from under the operation unit main PCB.
6. Remove the six screws holding the operation unit and then the unit.
7. Remove the five clamps and two connectors at the front of the scanner unit.
8. Remove the five clamps and twelve connectors at the rear of the scanner unit.
9. Remove the screw holding the two grounding wires at the rear of the scanner unit
and then the wires.
10. Remove the wires detached in steps 7, 8 and 9 from the scanner unit.
11. While taking care not to touch the shading plate or rear face of the contact glass,
remove the contact glass.
12. Remove the ISU and lower ISU covers, and detach the three connectors.
13. Remove the four screws with rubber mounts and then the scanner unit.
Screws
Screws
3-3-28
Screws
Figure 3-3-34 Detaching the scanner unit
ISU cover
Scanner unit
Screws
Lower ISU cover
Screws
Connectors