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EPL-N2700 Revision A
Operating Principles Printer Mechanism Operating Principles 55
2.1.3.1 Switches and Sensors
Table 2-1. Switches and Sensors
Location Name Function
Printer main body
S1 Main Switch Turns on/off power.
S2
Right Door Interlock
Switch
Detects open-close condition of the right
door. (The right door is opened when the
imaging cartridge is replaced.)
PC2
Timing Roller Front
Sensor
Detects the paper has been fed.
Signal is LOW when paper is detected.
PC3 Paper Eject Sensor
Detects the paper has been output.
Signal is Low when paper is detected.
PC4
MP Cassette Paper
Empty Sensor
Detects the paper empty condition for the
MP Cassette.
Signal is HIGH when no paper is in the
cassette.
PC5
MP Cassette Paper Near
Empty Sensor
Detects the paper near empty condition for
the MP Cassette.
Signal is LOW when no paper is in the
cassette.
PC6 MP Cassette Set Sensor
Detects the MP Cassette is installed.
Signal is HIGH with the cassette installed.
PWB-1 MP Cassette Size Sensor
Detects the size of the paper set in the MP
Cassette.
S3
MP Cassette Paper Size
Sensor
Detects the size of the paper set in the MP
Cassette is whether A4 or LETTER.
PWB-G Toner Empty Sensor
Detects the toner empty condition for the
imaging cartridge.
Signal is LOW when the toner has run out.
TH1 Fuser Thermistor
Cuts off the voltage for the heater lamp
when the upper fusing roller heats up
abnormally.
TS1 Fuser Thermostat
Cuts off the voltage for the heater lamp
when the upper fusing roller heats up
abnormally.
TF1 Fuser Temperature Fuse
The fuse is blown when the temperature of
the upper fusing roller has risen
abnormally.
Cassette 1
PC22
Cassette 1 Paper Empty
Sensor
Detects the paper empty condition for the
Cassette 1.
Signal is LOW when no paper is in the
cassette.
PC25
Cassette 1 Paper Near
Empty Sensor
Detects the paper near empty condition for
the Cassette 1.
Signal is LOW when no paper is in the
cassette.
PC23
Cassette 1 Right Door Set
Sensor
Detects open-close condition of the
Cassette 1 right door.
The signal is HIGH when the door is
closed.
Location Name Function