Kyocera Mita Ecosys FS-1800+ Operation Manual page 229

12
If the duplexer is installed, secure the power cord to the duplexer.
Take care not to loosen the power cord.
13
If the duplexer is installed, remove the two cut-out portions from the
upper part of the duplexer rear cover removed in step 5.
14
Reinstall the duplexer rear cover.
D-13
Installing Option Units
Duplexer
Rear Cover