Ricoh C252 Service Manual page 113

Boards
No. Component
13 Operation Panel Board
Main Processing Unit (MPU)
34
37 Power Supply Unit (PSU)
Motors
No. Component
2 Scanner Motor
4 Ink Pump Motor
5 Master Feed Motor
11 Cutter Motor
22 Master Eject Motor
Air Knife Fan Motor
23
Vacuum Fan Motor
26
27 Pressure Plate Motor
29 Clamper Motor
Main Motor
31
Registration Motor
33
Switches
No. Component
7 Right Side Cover Set Switch
14 Door Safety Switch
Solenoids
No. Component
Front Pressure Release
12
Solenoid
Rear Pressure Release
30
Solenoid
Counters
No. Component
20 Master Counter
21 Paper Counter
SM
MECHANISM OVERVIEW
Function
This board controls the operation panel.
Controls all machine functions, both directly and
through other boards.
Provides dc power to the machine.
Function
Drives the scanner.
Drives the ink pump.
Feeds the master to the drum.
Cuts the master.
Sends used masters into the master eject box.
Rotates the fan to provide air to separate the
leading edge of the paper from the drum.
Provides suction so that paper is held firmly on
the transport belt.
Drives the pressure plate.
Opens or closes the master clamper on the drum.
Rotates the drum, paper feed roller and transport
belts.
Feeds the paper to align it with the master on the
drum.
Function
Checks if the right side cover is closed.
Checks whether the front door is properly closed.
Function
Releases the press roller to apply printing
pressure.
Releases the press roller to apply printing
pressure.
Function
Keeps track of the total number of masters made.
Keeps track of the total number of copies.
6-3 C252