Epson C40UX Troubleshooting with LED Error Indications, Error Indicator of Operation Panel

Stylus C40UX/C40SX/C20UX/C20SX Revision A

3.2 Troubleshooting with LED Error Indications

This section describes how to troubleshoot the problem when the printer indicates an error at power on and can not print. The Stylus C40UX/C40SX/C20UX/C20SX can detect the following six errors and seven status, and indicates them with the LEDs, as shows below.

Table 3-3. Error Indicator of Operation Panel

Printer Status		Indicators			Priority
	Power		Error
Power ON condition	On		-		10
Ink sequence	Blink		-		6
Ink Cartridge change mode	Blink		-		5
Data processing	Blink		-		9
Paper Out	-		On		4
Paper jam condition	-		On		3
Ink end (Black)	-		On →	ON	8
Ink level low (Black)	-		Blink →	Blink	8
Ink end (Color)	-		On →	ON	8
Ink level low (Color)	-		Blink→	Blink	8
Ink end (Black and Color)	-		ON →	ON	8
No Ink Cartridge (Black and Color)	-		On		7
Maintenance request	Alt Blink		Alt Blink		2
(Ink Overflow Counter error)
Fatal error	Off		On		1

"- " : Indicator status don't change.

"A -> B " :A is a indicator condition when carriage is on Home Position. B is a indicator condition in Ink exchange sequence.

See the following tables which show the error conditions and corresponding possible causes:

Table 3-4. Error Condition and possible cause

Symptom		Possible Cause	Check table
	• The friction of the LD roller is lowered due
		to the paper dust.
Paper out error indication	•	The clutch mechanism is broken.	Table 3-5
	•	Tension spring 0.143 come off in the clutch	Table 3-6
(Paper is not loaded
		mechanism.	Table 3-7
correctly)
	• Compression spring 1.47 comes off.
	• Tip of Change lever has any damage.
	• PF motor is broken.
	• Star wheel assembly is not assembled on
		the Paper eject frame.
	• The Spur gear 10.8 is not assembled		Table 3-8
		correctly.
Paper jam error indication			Table 3-9
	• The paper guide front is not assembled
			Table 3-10
		correctly or has any damage.
	• The PE detection lever dose not move
		smoothly.
Multiple papers are always	•	The paper return plate dose not work	Table 3-13
loaded		correctly.
Paper is always loaded	•	The Change lever is broken in the Clutch	Table 3-14
without any print job		mechanism.
	• HP sensor lever or PE sensor lever dose not
		move smoothly.
	• HP/PE sensor is defective.		Table 3-14
	• CR motor is defective.
Fatal error indication			Table 3-15
	• PF motor is defective.
			Table 3-15
	• Main board is defective.
	• Printer Housing dose not secured with
		screw on -the printer mechanism.

Troubleshooting Troubleshooting with LED Error Indications 46