According to the shape of the joint that shown in the following figure, refer to each procedure.
Removing the Purge Unit (when the joint [A] has been attached.)
1) Turn off the power, and then move the carriage onto the platen. Refer to "Disassembly/Reassembly > Points to Note on Disassembly and Reassembly > Opening
the Cap/Moving the Wiper Unit".
2) Remove the right cover.
3) Remove five screws [1] and disconnect five connectors [2], and then remove the cable from the cable guide to remove the right side plate unit [3].