Epson gt-20000 password - Ricoh IS300e Flatbed Scanner

https://www.scribd.com/doc/202820693/Epson-GT-S80-GT-S50-Service-Manual

https://www.scribd.com/doc/202820693/Epson-GT-S80-GT-S50-Service-Manual

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You connect to your wifi from your printer settings > WiFi setup wizard. It should ask your wifi password when connecting.
Check your manual. If you don't have one here's the link.
Epson WorkForce 435 All in One Printer

problem avec imp epson m2000

click here>>>>>>>http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?oid=90754&infoType=Downloads

click here >>>>>http://www.epson.co.uk/gb/en/viewcon/corporatesite/products/mainunits/faq/11446/5690

Try uninstalling then reinstall first. Did you buy it new? Which os are you using?

epson support>>>>>>
colour r200... http://www.epson.co.uk/Printers-and-All-In-Ones/Inkjet/Epson-Stylus-Color-200/Drivers-Support?supportLandingPage=true
photo r200 ... http://www.epson.co.uk/Printers-and-All-In-Ones/Inkjet/Epson-Stylus-Photo-R200/Drivers-Support?supportLandingPage=true

Use SSC Utility of Adjusment program to check waste ink counter. If it reach maximum value, you must reset waste ink counter.