Ricoh D124 Detailed Descriptions Manual page 173

Note: The following boards are not assigned numbers in the circuit diagram.
No. Component
PCB CCB (OT1)
PCB Copy Data Security Card
PCB Gigabit Ethernet
PCB LCDC
PCB MLB
PCB NVRAM
PCB OP-L
PCB OP-R
No. Component
Sensors
S01 Exit Sensor
S02 Vertical Encoder Sensor
S03 Vertical Encoder HP Sensor
S04 Roll Unit Exit Sensor: RU1
S05 Paper Entrance Sensor: RU1
S06 Encoder Sensor 1: RU1
S07 Encoder Sensor 2: RU1
S08 Paper Release Sensor: RU1
S09 Roll End Sensor (Roll Unit 1)
S10 Roll End Sensor (Roll Unit 2)
S11 Encoder Sensor 2: RU2
Detailed Descriptions
Function
Cartridge Control Board. Located behind the ink supply unit.
Relays the ink cartridge ID chip signals that confirm whether the
ink cartridges are installed correctly in the ink cartridge holder.
Also called ICIB-3. This is the PCB that holds the firmware for
the prohibit copy function that stops copying of currency, bank
bonds, etc. This board is an option for this machine.
Slot C. For installation of the Gigabit Ethernet board.
LCD Controller. Controls the operation panel.
Media Link Board (File Format Converter). An option.
Documents saved with the copy/printer function can be received
from your client computer via a network, using Desk Top Binder,
for example.
Stores non-volatile machine settings.
Operation Panel - Left. This is board that holds the function key
LEDs and contacts on the left side of the operation panel.
Operation Panel – Right. This is the board that holds the 10-key
pad and operation keys on the right side of the operation panel.
Function
Located at the paper exit of the main machine, detects the
leading and trailing edges of the paper. Signals an error if
the paper fails to arrive or leave the sensor location within
the prescribed time.
The rim of the vertical encoder wheel on the left side of the
machine is centered in the gap of this sensor. The sensor
reads the code on the rim of the vertical encoder wheel as
it rotates to control the operation of the vertical motor
during paper feed.
Mounted opposite and lower than the vertical encoder
sensor on the left side of the machine, this sensor also
reads the code on the rim of the vertical encoder wheel
and detects when the wheel reaches the home position
and switches off the vertical motor. This sets the encoder
wheel at the start position for every job.
Detects the leading edge of the roll paper as it leaves Roll
Unit 1.
Detects the edge of the roll paper when it leaves Roll Unit
1 and enters the main paper path.
Monitors the rotation of the roll core driven by the roll feed
motor in Roll Unit 1. This pulse count is used to calculate
the operation time of the roll feed motor.
Monitors rotation of the outer circumference of the paper
roll in Roll Unit 1. This count is used in a calculation to
determine the amount of paper remaining on the roll.
Controls the raising and lowering of the roll feed roller idle
rollers during paper feed from Roll Unit 1.
Detects when the paper roll in Roll Unit 1 runs out of
paper.
Detects when the paper roll in Roll Unit 2 runs out of
paper.
Monitors rotation of the outer circumference of the paper
roll in Roll Unit 2. This count is used in a calculation to
determine the amount of paper remaining on the roll.
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