Pressure Mechanism - Ricoh FT7770 Service Manual

30 April, '89
hot roller and the pressure roller have stripper pawls to prevent
Both the
wrap-around jams.
Related Service Call Conditions: See FIELD MANUAL for details.
Thermistor Circuit Open
SC 5:
Low Hot Roller Temperature
SC 6:
SC 7: Hot Roller Overheating
SC 8:
Thermofuse Circuit Open

Pressure Mechanism

2.
Generally, pressure is constantly applied between the hot and pressure rol-
lers.
However, the fusing pressure can be released by turning the pressure
cam shaft.
Release the pressure when replacing the fusing rollers or when transporting
the copier to prevent the pressure roller from being indented by the hot
roller during transportation.
Lower Pressure Arm
2-82