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1.3 Engine Controller Circuit
Engine
Controller
Circuit
Primary charging roller
MP Tray Pick-up Solenoid
Scanner Unit
High-Voltage
Power Supply
Assy
Paper Feeder
PCB
Detectors
Main Motor
Low-Voltage
Power Supply
Assy
Pick-up Motor
Fixing Unit
Transfer roller
Developing cylinder
Toner sensor
Pick-up Solenoid
Figure 3.5 Engine Controller Block Diagram
A. Engine Control CPU
B. Low-Voltage Power Supply Connector
C. Fuser Unit Control
C-1. Heater Drive Circuit
C-2. Heater Temperature Input Signal
C-3. Paper Eject Input Signal
D. Paper Feeder PCB Control Signals and Connector
E. Option Interface Circuit and Connector
F. High-Voltage Power Supply Control Circuit and Connector
G. Scanner Unit Control
G-1. Scanner Motor Control Circuit
G-2. Laser Diode Drive PCB Control Circuit
H. Fan Motor Drive Circuit
H-1. Fan Motor Drive Circuit
H-2. Scanner Fan Motor Drive Circuit
I. Main Motor Control Circuit
J. Cover Open Detect Circuit
K. Safety Door Switch Circuit
Components in the Circuit (refer to the next page)