User's Manual

11. Switch the MBU battery jumper switch [A] to “ON” position.
Make sure that the MBU board is firmly connected to the FCU.
12. Reinstall the controller box.
13. Attach the handset support bracket and handset bracket to the copier, and then
connect the handset cord with the ferrite core to the "TEL" jack if you install the
handset to the machine.
For details, refer to the "Hand Set Installation" in the Service Manual for the Fax
Unit (D393).
14. Attach the ferrite core to the telephone cord.
15. Connect the telephone cord to the "LINE 1" jack.
InstallationInstallation-6
As for the Ferrite Core of the cable #2 in the test report's 4.2 Comfiguration of tested system, please see 14 of this page of the 
service manual (installation-6).
Because this cable is professional installation, the service manual is only for service men, and it is not supplied to the users.

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