Ricoh D177 Service Training page 61

 When you install a new development unit or PCDU, the
counter is not reset automatically.
 Before replacing a PCDU, set SP3-701 to "1" for the PCU
that you will replace, and again for the development unit
that you will replace.
 SP3-701-002 PCU Bk
 SP3-701-003 Dev Bk
 SP3-701-025 PCU C
 SP3-701-026 Dev C
 SP3-701-048 PCU M
 SP3-701-049 Dev M
 SP3-701-071 PCU Y
 SP3-701-072 Dev Y
 Then switch the power OFF.
 Then replace the PCDU and switch the power ON.
 If you forget this procedure, the counter of the PCU will be
overwritten with the development unit value.
Slide 61
No additional notes
Replacing a PCDU - 1
61
Met-C1yz Training