2-8
Confidential
2.4 Block Diagram
Fig. 2-4
Engine PCB
Front cover sensor
Develop drive motor
PF drive motor
Drum drive motor
Develop release motor
T1 paper pick-up solenoid
MP paper pick-up solenoid
Registration solenoid
Mono solenoid
Paper eject motor
Waste toner sensor
Fuser fan
Power fan
Back cover sensor
Paper eject unit
EL emission circuit
Toner sensor
(emission)
External temperature/
humidity sensor
CPU
High-voltage
power supply PCB
Toner/New sensor PCB
Drum position sensor PCB
Develop release sensor PCB
T1 registration front/rear sensor PCB
MP paper empty/registration front sensor PCB
T1 paper edge sensor PCB
Belt unit temperature sensor
Back light module
LCD
Panel PCB
Registration mark R PCB
Registration mark L PCB
Wireless LAN PCB
USB host relay PCB
Internal temperature sensor
Center thermistor
Paper eject
sensor PCB
Side thermistor
Low-voltage power supply PCB
T2 sensor PCB
T2 Relay
PCB ASSY
T2 registration sensor PCB
Polygon motor LD PCB
Plate motor
T2 solenoid
Paper tray 2
Laser unit
Fuser unit
Main PCB
Shutter solenoid
Blower
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