Ricoh LDD250, Service Manual

Page: 329 / 459

MECHANISM OVERVIEW
SM 6-7 C262/C265
Detailed
Des
cription
s
Index No. Name Function
63 Image Shift Motor Makes a phase difference between the positions of
the drum and pressure cylinder for the up/down
image shifting mode.
69 Clamper Motor Opens or closes the drum master clamper.
73 Printing Pressure
Adjustment Motor Adjusts the printing pressure to the correct value
for the current temperature and speed of printing.
This is done to prevent changes in image density.
79 Main Motor
Drives the drum, pressure cylinder, and paper
delivery unit components.
83 Pressure Plate Motor Raises and lowers the pressure plate in the master
eject box.
89 Wing Guide Motor Changes the position of the paper wing guides in
the paper delivery unit.
92 Pressure Cam Shift
Motor Switches the cams for the small master and full
size master to apply the appropriate printing
pressure.
95 Slider Lift Motor Moves the sliding arm in the job separator unit up
or down.
98 Job Separator Motor Drives the sliding arm in the job separator unit.
99 Transport Vacuum Fan Provides suction so that paper is held firmly on the
transport belts.
102 Air Knife Fans Three fans provide air to separate the paper
leading edge from the drum.
103 Master Feed Control
Motor Controls the master feed control roller operation to
feed the master.
105 Cutter Motor Cuts the master after completing the master
making.
108 Platen Release Motor
Applies or releases the pressure between the
platen roller and the thermal head.
110 Master Feed Motor Feeds the master to the drum.
111 Master Suction Fans Three fans provide suction to guide the master into
the buffer duct.
116 Master Buffer Fans Two fans make sure that the folds of the master do
not stick together in the master buffer duct.
Switches
Index No. Name Function
23 Master Making Unit Set
Switch Checks if the master making unit is set.
44 Paper Table Lowering
Switch Lowers the paper table.
56 Ink Cartridge Set Switch Detects if the ink cartridge is in place.
80 Cover Safety Switch Checks if the front door is set correctly.
84 Main Switch Turns the power on or off.
87 Eject Box Set Switch Checks if the master eject box is installed.
104 Cutter HP Switch Detects when the cutter is at the home position.