Do you want a manual for the printer ?
OK, it means you can print in b&w from your PC ?
This is a strange problem, can you tell me which version of Windows do you use ?
Do you have tried to copy a color document by pressing the Color start button on the printer ?
I don't think you have done anything wrong, as the printer is copying is b&w , is this a new printer ?
Are you facing this problem from the day one of the printer or it just started to do this ?
Then, why do you have waited for this long time, this is a logic board problem and unforutnately it cannot be solved without replacing the board and as the printer is under warranty period, Epson will replace the printer free of cost.
Yes, unfortunately it is true, as this is a hardware fault of the printer and you should not spend money to repair the printer.