2FM
2-3-2 Engine board
MP feed
clutch
Main motor
MP paper
sensor
2-3-2
Engine board
LED indicators
(DL1, DL2, DL3, DL4
Key switches
(SW1, SW2)
Reset IC
(U5)
Temperature
thermistor
(TH1)
Registration
clutch
Figure 2-3-2 Engine board circuit block diagram
Waste
toner
sensor
CPU
(U1)
Paper
sensor
Bias board
Eraser
LSU
lamp
EEPROM
(U2)
Switchback
solenoid
Main
board