Epson DFX-8500 service manual Troubleshooting Information, Error Messages

TROUBLESHOOTING

5.1TROUBLESHOOTING INFORMATION

The information in this chapter makes troubleshooting easier to perform by listing various problems that can occur and providing possible solutions.

Note: For this printer, no special tools are necessary for troubleshooting to the unit level, with the exception of a digital multi-meter. Some component-level troubleshooting may require an oscilloscope.

5.1.1 Error Messages

The DFX-8500 indicates errors using beeps. Table 5-1 lists fatal errors.

Table 5-1. Fatal Error Information

Fatal Error	7-segment	Beeper *2)		Description	Note*3)
	LED *1)
CR motor	1	-	∙	The isolation resistance in the CR	Auto power off
circuit				motor is too low.	after 12 seconds
shortage error
Cutter error	2	- -	∙	Optional cutter cable is not connected	Auto power off
				firmly.	after 12 seconds
			∙ Optional cutter is defective.
Platen gap	3	- - -	∙	The PG home sensor is broken.	Auto power off
error			∙	The PG motor is broken.	after 12 seconds
			∙ The parallelism adjustment is
				incorrect.
			∙ PG adjustment values are incorrect.
			∙ PG backlash is too tight.
Carriage lock	4	- - - -	∙	The carriage is locked.	Auto power off
error			∙	The interlock switch doesn’t close	after 12 seconds
				exactly.
			∙ The parallelism adjustment is
				incorrect.
			∙ PG adjustment values are incorrect.
Carriage load	6	- - - - - -	∙	PW sensor is defective.	Auto power off
measurement			∙	The CR motor is defective.	after 12 seconds
error			∙	The CR encoder sensor is defective.
Head fan error	7	- - - - - - -	∙	The head fan driver IC is shorted.	Head power off
			∙	The head fan of the print head is	immediately
				defective.
Head circuit	8	- - - - - - - -	∙	The print head driver IC is shorted.	Head power off
shortage error			∙	The coil of the print head is defective.	immediately
RAM check	9	- - - - - - - - -	∙	DRAM of C204 MAIN board is	Auto power off
error				defective.	after 12 seconds
Paper memory	a	- - - - - - - - - -		-	-
setting error
EEPROM data	b	- - - - - - - - - - -	∙	EEPROM on the C204 MAIN board
compare error				is defective.
Tractor change	c	- - - - - - - - - - -	∙	Tractor select mechanism is	Auto power off
error		-		defective.	after 12 seconds
Watch dog	d		∙	C205 MAIN board has trouble.	Auto power off
error					after 12 seconds

Note 1: The 7 segment LED indicates error No. and “E” alternately.

Note 2: The descriptions “.”and “-“ show how the beeper sounds. “.”: Beeper sounds 100 ms and interval is 100 ms.

“-“ : Beeper sounds 500 ms and interval is 100 ms.

Note 3: Turn the printer power off while the 7 segment LED are on, or the printer shuts power down automatically. You can’t turn the printer back on for 5 minutes after the printer shuts power down automatically

Rev. B 5-1