Ricoh Aficio MP 161SPF - Manual (Page 179)

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7
Programming the SUB Code
A
Press [Option].
B
Select [SUB Code] using {U} or {T}, and then press the {OK} key.
C
Enter the SUB Code using the number keys and then press the {OK} key.
D
Enter the password using the number keys and then press the {OK} key.
E
Press [Exit].