Epson N2700 manual Switches and Sensors, Location Name Function

EPL-N2700 Revision A

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.
		Right Door Interlock	Detects open-close condition of the right
	S2		door. (The right door is opened when the
		Switch
			imaging cartridge is replaced.)
	PC2	Timing Roller Front	Detects the paper has been fed.
		Sensor	Signal is LOW when paper is detected.
	PC3	Paper Eject Sensor	Detects the paper has been output.
			Signal is Low when paper is detected.
			Detects the paper empty condition for the
	PC4	MP Cassette Paper	MP Cassette.
		Empty Sensor	Signal is HIGH when no paper is in the
			cassette.
			Detects the paper near empty condition for
	PC5	MP Cassette Paper Near	the MP Cassette.
		Empty Sensor	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	Detects the size of the paper set in the MP
		Sensor	Cassette is whether A4 or LETTER.
			Detects the toner empty condition for the
	PWB-G	Toner Empty Sensor	imaging cartridge.
			Signal is LOW when the toner has run out.
			Cuts off the voltage for the heater lamp
	TH1	Fuser Thermistor	when the upper fusing roller heats up
			abnormally.

Location		Name	Function
			Cuts off the voltage for the heater lamp
	TS1	Fuser Thermostat	when the upper fusing roller heats up
			abnormally.
			The fuse is blown when the temperature of
	TF1	Fuser Temperature Fuse	the upper fusing roller has risen
			abnormally.
Cassette 1
			Detects the paper empty condition for the
	PC22	Cassette 1 Paper Empty	Cassette 1.
		Sensor	Signal is LOW when no paper is in the
			cassette.
			Detects the paper near empty condition for
	PC25	Cassette 1 Paper Near	the Cassette 1.
		Empty Sensor	Signal is LOW when no paper is in the
			cassette.
			Detects open-close condition of the
	PC23	Cassette 1 Right Door Set	Cassette 1 right door.
		Sensor	The signal is HIGH when the door is
			closed.

Operating Principles Printer Mechanism Operating Principles 55