Ricoh D146 Service Manual page 1803

13. Reinstall the rear cover and controller box cover.
14. Attach the two ferrite cores to the telephone cords for double-SG3 board installation.
15. Connect the telephone cords to the "LINE2" and "LINE3" jacks.
16. Connect the power plug to a power outlet and turn on the main power switch.
17. Enter the service mode. Set bit 1 of communication switch 16 to "1" (SP1-104-023).
18. Set bit 3 of communication switch 16 to "1" (SP1-104-023).
19. Exit the service mode.
20. Turn the main power switch off and on.
21. Print out the system parameter list. Then check that "G3" shows as an option.
22. Set up and program the items required for PSTN-2 communications.
SM 27 D163