How do I scan? I placed a report on the printer, pressed "Scan" and it does nothing. It flashes "1 E 3". What does this mean?
There is a big troubleshooting page created to diagnose this error. I recommend checking the page for further information. The error you receive is specific to Canon printers.
Troubleshooting page: http://kbsupport.cusa.canon.com/system/selfservice.controller?CONFIGURATION=1011&PARTITION_ID=1&secureFlag=false&TIMEZONE_OFFSET=&CMD=VIEW_ARTICLE&ARTICLE_ID=61212
Typically, the error can be passed using Black, Color or Stop/Reset button.