Ricoh B132 Service Manual page 223

COMMON REMOVAL PROCEDURES
To remove a PCU
[A]
[B]
B132R202A.WMF
Important: To prevent damage to the drum potential sensor and its relay board,
always make sure that the machine is turned off and that the power cord is
disconnected from the power source before you remove a PCU.
13. While pressing down the release tab [A] above the PCU, pull the PCU [B] out of
the machine.
SM 3-13 B132/B200