Ricoh B132 Service Manual page 880

SPECIFICATIONS
No.
PCBs
PCB1 PFC (Paper Feed Control)
PCB2 AC Drive Board
PCB3 PSU (Power Supply Unit)
PCB4 DRB (Drive Board)
PCB5 IOB (Input/Output Board)
PCB6 Power Pack: Development
Bias
PCB7 Power Pack: Charge
PCB8 Power Pack: Transfer
PCB9 Power Pack - Separation
PCB10 DMB (Drum Motor Board)
PCB11 TMB (Transfer Motor Board)
PCB12 Potential Sensor Board
PCB13 PPB (Peltier Board)
PCB14 CNB (Connector Board)
PCB15 IDCB - C1
PCB16 IDCB - M1
PCB17 IDCB - K1
PCB18 IDCB - Y1
PCB19 SBU (Sensor Board Unit)
PCB20 SIOB (Scanner Interface
Board)
PCB21 Lamp Regulator
B132/B200
Component Function
Controls paper feed.
Controls the power supply to the fusing lamps,
heaters, and PSU.
Supplies DC current to the machine and contains
the AC drive that controls the fusing lamp power
supply.
Contains the circuits for the stepping motors that
drive the printer engine, and distributes electrical
power to all other PCBs.
The I/O control board controls 1) Input and output
ports for all sensors, motors, solenoids of the
engine, 2) drivers, 3) high voltage power supply
for PWM, and 4) analog input signals.
Supplies the voltage for the bias applied to the
developer in the PCUs by the development rollers.
Supplies the voltage for the charge applied to the
OPC drums by the charge roller.
Supplies charge to 1) the four image transfer
rollers that pull the toner images from the four
from the four drums (Y, M, C, K), and 2) to the
paper transfer roller that pulls the image off the
ITB onto paper.
Supplies the dc/ac charges for paper separation.
Controls the motors that drive the OPC drums.
Controls the motor that drives the ITB.
Processes data from the Y, M, C, K, potential
sensors.
Controls the operation of the Peltier unit.
Sorts and routes signals to electrical components.
One of two ID control boards at the base of the
Cyan STC. The CPU reads the board to confirm
that the correct STC is inserted into the correct
bin.
One of two ID control boards at the base of the
Magenta STC. The CPU reads the board to
confirm that the correct STC is inserted into the
correct bin.
One of two ID control boards at the base of the
Black STC. The CPU reads the board to confirm
that the correct STC is inserted into the correct
bin.
One of two ID control boards at the base of the
Yellow STC. The CPU reads the board to confirm
that the correct STC is inserted into the correct
bin.
Contains the CCD. Converts CCD analog signals
to digital signals.
Controls all the sensors in the scanner unit and
controls the carriage drive stepping motors.
Converts the ac power input to a stable, high
frequency ac output to the exposure lamp.
7-22 SM