Epson Scan 2500 Scanner Troubleshooting, User-level Scanner-Specific errors, Power problems

EPSON Stylus Scan 2500 Revision A

3.3 Scanner Troubleshooting

This section describes troubleshooting from the abnormal phenomenon. You can isolate the faulty unit based on the abnormal phenomenon. See

Table 3-6, “Service Level Troubleshooting Starts Here,” on page 69 to find the closest phenomenon and the corresponding table to refer to.

Table 3-5. User-level Scanner-Specific errors

Error	Cause	Solution
	• The lamp is broken.	Turn off the Stylus Scan and
	• Stylus Scan turned on before	turn it back on. If the error does
	the transportation screw was	not clear, service.
Fatal error	removed.	(Disposition)
	• System breakdown.	Turn off the lamp and stop
		operation. Set bit 7 of the
		status byte.
		After removing the document,
		turn the Stylus Scan off and
		back on, or send the ESC @
ADF paper		command.
	ADF fails to eject the document.	Parallel I/F init: active pulse
jam
		(Disposition)
		Turn off the lamp and stop
		operation. Set bit 7 of the
		status byte.
	Unidentified command detected.
	(Disposition)
Command	The scanner sent a NACK signal	Send a correct command to
	and is waiting for the next
error	command. If an incorrect	clear the error.
	command or parameter is
	received, it is disregarded and the
	previous value is maintained.
ADF cover	ADF cover open	Close the cover.
open
Maintenance	Maintenance cover open	Close the cover.
cover open

Table 3-6. Service Level Troubleshooting Starts Here

Phenomenon		Description	Ref, Table
	• The Operate light on the control
Scanner does not		panel does not come on.	Table 3-7
operate with power on.	•	Scanner does not operate the	Table 3-8
		initialization.
Fatal Error occurs and	•	Carriage unit does not operate.	Table 3-9
	•	Carriage unit crashes into the	Table 3-10
is not cleared after
turning off and back on		frame, and an error is indicated.
	•	The lamp does not light up.
the scanner.			Table 3-11
Scanned image is		---	Table 3-12
unclear.
“Interface Error” is	•	SCSI Interface Error	Table 3-13
indicated.	•	USB Interface Error	Table 3-14
“Option Error” occurs.	•	Optional unit does not operate
Optional unit(ADF/TPU)		correctly.	Table 3-15
do not operate.

Table 3-7. Power problems

Cause	Step	Checkpoint	Finding	Solution
Connector CN1 on		Is the connector
		CN1 on the power		Connect CN1
the power board is	1		Yes
		board		properly.
disconnected.
		disconnected?
Connector CN1 or		Is the connector
CN2 on the power	2	CN1 or CN2 on	Yes	Connect CN1 or 2
board		the power board		properly.
disconnected.		disconnected?
Fuse on the power		Has the fuse on
board has blown	3	the power board	Yes	Replace the fuse.
out.		blown out?

Troubleshooting Scanner Troubleshooting 70