Ricoh GR-C1 Series Service Training page 16

In this fax unit, the FCU and MBU boards have
been combined. Because of this, the data backup
procedure has been changed.
The FCU contains the ROM, SRAM and NCU
circuits.
Options for fax:
Slide 16
No additional notes
Controller Options
Fax Unit
Handset (for the USA): This is a new model.
There is no optional memory.
There is no optional extra G3 interface unit.
Fax Connection Unit: This is needed for the
Remote Fax function.
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GR-C1 Training