Ricoh GR-C1 Series Service Training page 91

Don't forget to switch the FCU battery jumper switch [A] to
the "ON" position.
Also do these fax SPs after installation:
Slide 91
No additional notes
Fax Unit (1)
Do SP3102-000 in the fax SP mode and enter the serial
number for the fax unit.
Enter the correct country code with SP2103-001 (NCU
Country/ Area Code Setting).
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GR-C1 Training