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Printed Circuit Boards
Symbol
Name
PCB1
PSU
Lamp regulator
PCB 2
SBU
PCB3
Scanner IPU board
PCB4
Scanner motor drive
PCB 5
board
I/O control board
PCB6
High voltage supply
PCB7
board: C, G
High voltage supply
PC8
board: T1, PCC
High voltage supply
PCB9
board: T2, D
High voltage supply
PCB10
board: B
PCB11 Main control board
Laser synchronizing
PCB12
detector board 1
Laser synchronizing
PCB13
detector board 2
Revolver motor drive
PCB14
board
Interface board:
PCB15
CSS/Bank
PCB16 LD drive board
LD main control board Controls the laser power, main scan
PCB17
By-pass paper width
PCB18
detection board
PCB19 Operation panel board Used to operate the copier.
Duplex control board
PCB20
PCB21 IDU
Polygon mirror motor
PCB22
drive board
Temperature and
PCB23
humidity sensor board
Function
Supplies AC and DC power.
Supplies AC power to the exposure
lamp.
Converts the light reflected from the
original into video signals.
Converts the RGB image signal from the
CCD to a KCMY signal and sends it to
the LD main control board.
Supplies DC power to the scanner
motor.
Interfaces the sensors, clutches,
solenoids, and motors in the printer
module with the main control board.
Supplies power to the charge corona
wire and grid.
Supplies power to the transfer belt and
pre-cleaning corona unit.
Supplies power to the paper transfer
bias roller and paper separation corona
unit.
Supplies power to the development
rollers.
Controls the printer sequence.
Detects laser main scan synchronization
while the latent image is being written to
the drum.
Detects laser main scan synchronization
while the latent image is being written to
the drum.
Controls the revolver motor.
Connects to the CSS unit and optional
paper tray unit.
Drives the laser diode.
synchronizing sensors, and process
control gamma correction.
Detects the paper width on the by-pass
feed table.
Controls the duplex unit.
Analyzes images for anti-counterfeiting.
Controls the polygon mirror motor.
Detects the ambient temperature and
humidity.
1
Fig. No.-
Location
Index No.
7-4
K4
1-6
O7
1-8
J9
1-9
L8
1-1
M7
7-11
D14
7-1
A14
7-9
A2
7-5
A1
5-9
A3
1-10
J12
1-16
O15
1-12
O15
7-7
F5
7-6
J9
1-15
O17
1-11
M16
3-7
A10
4-1
H19
F20
4-18
(A259/A260
copiers only)
1-4
M14
1-13
O15
3-16
E19
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