Printers being a technical machine cannot really avoid getting into technical errors but yes if you are technically sound enough to handle these issues then your working will not be effected but if in case you are not it might hinder your work to get error B203 fixed turn off the printer open the front cover now turn on the printer and wait for the ink head to start moving shut the cover back wait for a minute or two your printer will be back to normal menu go to settings let the process finish and follow the steps if they appear your printer will be back to normal for more info you can visit the website or talk to http://printerhelpsupport.co.uk/canon-printer-help-number.html