Ricoh Aficio MP C3001 Service Manual page 1914

Bit Switches
Communication Switch 15 – Not used (do not change the settings)
Communication Switch 16 (SP No. 1-104-023)
No Function
0 Not used
Optional G3 unit (G3-2)
1 0: Not installed
1: Installed
2 Not used
Select PSTN connection
3 0: Off
1: On
4-7 Not used
D545
Comments
Do not change the settings.
Change this bit to 1 when installing the first
optional G3 unit.
This switch enables the G3-2.
0: Off, no connection
1: Recognizes and enables G3-2.
This switch can be used only after G3-2 has been
installed.
Do not change the settings.
110 SM