Epson GT-6500 EN - Manual (Page 83)

The communications (interface) settings are incorrect.
Scanner’s response:
The lamps turn off and the scanner stops moving.
The scanner stops accepting commands.
Error recovery procedure:
After correcting the communications problem, perform one of the
following.
Turn the scanner off and then back on again.
Press the reset button (if the scanner model has a reset button).
Set the parallel interface’s INIT signal to LOW.
Send a device reset message on your SCSI line.
Set the SCSI’s reset line to active.
System error
The scanner itself is not functioning properly.
Cause:
The lamps are disconnected or burned out.
The shipping screw has not been removed from the carriage (the
scanner cannot perform the carriage initialization procedure).
The scanner is broken.
During scanning, an option error was detected (cover open, paper jam,
etc.).
Scanner’s response:
The lamps turn off and the scanner stops moving.
Command Usage 2-45