Ricoh M281 Series Service Manual page 849

2. Connect the connector.
3. Attach the bracket [A].
14. Attach the flat cable [A] to CN603 of the new fax unit.
Make sure that the blue tape of the flat cable faces outward.
15. Remove the cap [A] from the controller box cover [B].
SM 15
FCU
D255/D256 FAX OPTION