Specifications

EPL-5700 Chapter2 Operating Principles
Rev. A
2-1
5
Table 2-6. Function of Each Electric Parts(Cont.)
Name Function
Inter lock switch
(S2)
Detects open/close condition of the upper
cover and blocks output power except DC5V,
when the cover is opened.
• Cover is closed; On
Laser diode
control board
Detects printing start position by emission of
the laser diode and SOS sensor, and emits
the laser beam to the OPC drum by image
signal.
Paper feed
solenoid (SL1)
Transmits driving power of the main motor to
the paper feed roller.
Thermister (TH1) Detects the surface temperature of the heat
roller and feeds back to the main control
board.
Thermostat(TS1) Blocks electricity to the heater lamp when the
temperature of the fusing part increases
abnormally.(195 °C)
Following shows position of electric parts functions of the optional second
paper feed unit.
Paper Feed Solenoid
Cassette Type Sensor
Switch
Relay Board
Paper Empty Sensor
Figure 2-18. Locaion of Electric Parts in the Second Paper Feed
Cassette
Table 2-7. Function of Electric Parts of Second Paper Feed Cassette
Name Function
Paper feed
solenoid
(SL21)
Controls gear/clutch, which transmits driving
force of the main motor to the paper feed roller.
• Solenoid On: Transmission of driving force.
Cassette type
sensor switch
3 consecutive switches detect the difference of
the cassette type determined by paper size.
Paper empty
sensor(on the
relay board)
Detects paper empty.
• Paper in: LOW.
Relay board Receives control signal or power supply from the
printer body and sends them to the electric parts
in the second paper feed unit.