Ricoh D177 Service Training page 60

Pressure
Release Filter
TD Sensor
 A two-component development system is used.
 One motor drives the K development motors, and another motor
drives the three color development units.
 The TD sensor is a non-contact type, containing an ID chip.
 Development bias is applied via a plate spring on the rear cover
of the PCDU.
 The pressure release filter is larger than the one in the Ap/At-C3
series.
Slide 60
In the ID chip, the following data is stored.
 Model series ID
 New PCDU information
 Color information
 Developer replacement information
 PCU replacement information
 Sensor serial no., date of manufacture
 Date of unit installation
 Unit total counter at installation (no. of sheets, travel distance)
 Date of unit operation
 Unit total counter during operation (no. of sheets, travel distance)
 Unit parts information
 Total counter
 Total color counter
Development
60
Met-C1yz Training
Development
Roller