Ricoh Aficio MP 161SPF - Manual (Page 162)

Registering Addresses and Users for Facsimile/Scanner Functions
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7
F
Press the {OK} key.
G
Press [Details].
H
Select [Auth. Info] using {U} or {T}, and then press the {OK} key.
I
Select [User Code] using {U} or {T}, and then press the {OK} key.
J
Press the {Clear/Stop} to delete the user code, and then press the {OK} key.
K
Press the {Escape} key.