Ricoh C231 Service Manual page 634

Boards
Index No.
18 LCD
19 Operation Panel Boards
21 Lamp Stabilizer
25 SBU
43 Main Processing Unit
(MPU)
48 Power Supply Unit
Motors
Index No.
1 Scanner Motor
4 Master Feed Motor
11 Paper Table Motor
15 Cutter Motor
29 Master Eject Motor
30 Air Knife Fan Motor
32 Vacuum Fan Motor
34 Pressure Plate Motor
36 Clamper Motor
40 Main Motor
41 Registration Motor
45 Original Feed Motor
Solenoids
Index No.
13 Front Pressure Release
Solenoid
38 Rear Pressure Release
Solenoid
Switches
Index No.
9, 14 Master making unit set
switches
12 Paper Table Lowering
Switch
16 Master eject unit safety
switch
17 Door Safety Switches
24 Cutter HP Switch
SM
Name
Displays messages for the operator
These boards control the operation panel.
This supplies power to the xenon lamp.
Makes a video signal from the scanned original.
Controls all machine functions both directly and
through other boards.
Provides dc power to the system.
Name
Stepper motor drives the book scanner.
Feeds the master to the drum.
Raises and lowers the paper table.
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.
Raises and lowers the pressure plate.
Opens or closes the drum master clamper.
Drives paper feed mechanisms, the drum, and the
paper delivery unit.
Feeds the paper to align it with the master on the
drum.
Stepper motor drives the book scanner.
Name
Releases the press roller to apply printing
pressure.
Releases the press roller to apply printing
pressure.
Name
The machine does not work until the two set
switches turn on.
Lowers the paper table.
Checks whether the master eject unit is properly
closed.
Checks whether the front door is properly closed.
Detects when the cutter is at the home position
6-3
ELECTRICAL COMPONENT LAYOUT
Function
Function
Function
Function
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