Gestetner B070 Service Manual page 524

ELECTRICAL COMPONENT DESCRIPTIONS
Number
M38 Duplex Entrance Cooling Fan 2
M39 Controller Board Fan Motor
M40 Mother Board Fan Motor 1
M41 Mother Board Fan Motor 2
PCBs
PCB01 BCU
PCB02 PSU-E
PCB03 PSU-C
PCB04 IOB
PCB05 SBU
PCB06 MCU
PCB07 Lamp Regulator
PCB08 Polygon Mirror Motor Control Board
PCB09 LDB
PCB10 AC Drive
PCB11 Operation Panel
PCB12 Operation Switch Board
PCB13 Mother Board
B070/B071
CÓPIA NÃO CONTROLADA
Name
6-8
CÓPIA NÃO CONTROLADA
Description
Removes heat from around the entrance to
the duplex/inverter unit.
Removes heat from around the controller
board.
Removes heat from around the mother
board.
Removes heat from around the mother
board.
BCU (Base-Engine Control Unit): Main
control board, controls the engine sequence,
timing for peripherals, image processing,
and the video data path
PSU-E (Power Supply Unit-Engine):
Supplies DC power for the machine, and
controls the anti-condensation heaters.
PSU-C (Power Supply Unit-Controller):
Supplies DC power for the controller.
IOB (Input/Output Board): Performs three
functions (1) Continues conversion done in
the BCU of the sensor input from the main
unit paper trays, toner supply unit, and LCT,
(2) Converts serial data from the BCU to
parallel data for control of the man unit
paper trays, toner supply unit, and LCT
components (motors, solenoids, clutches),
(3) Routes the power supply from the PSU
in the BCU to the LCT, and routes power
interlock power supply to all the motors.
SBU (Sensor Board Unit): Contains the
CCD. Converts the CCD output to digital
before sensing it to the IPU (Image
Processing Unit).
MCU (Main Control Unit): Controls the
scanner motor with the commands from the
BCU. Also controls fusing lamp on/off
timing, APS detection, the fan motors,
generation of gate signals, and transmission
of serial data.
Controls the xenon exposure lamp in the flat
bed scanner
Controls the polygon motor.
LDB (Laser Diode Board) controls the laser
diodes. It also contains the laser diodes.
Drives the ac components (fusing lamps,
anti-condensation heaters).
Controls the operation panel and LCD
display panel.
Switches main power to the machine on/off.
MB (Mother Board): Interfaces the controller
and the IPU.
SM