Kyocera KM-4230 Service Manual page 339

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( 4 ) Replacing the ISU (reference)
Take the following procedure when the ISU is to be checked or replaced.
Caution: After fitting the ISU, proceed to (5-2) Adjusting the position of the ISU.
<Procedure>
1. Remove the upper right cover.
2. While taking care not to touch the shading plate or rear face of the contact glass,
remove the contact glass.
3. Remove the ISU and lower ISU covers, and detach the two connectors.
Screws
Screws
ISU
Figure 3-3-36 Detaching the ISU and lower ISU covers
4. Remove the four screws holding the ISU and then the ISU.
5. Check or replace the ISU.
6. Refit all removed parts.
3-3-30
ISU cover
Screws
Screws
Lower ISU cover
Screws
Connectors