unknown

asked Feb 23, 2010 at 5:02am
Lexmark Lexmark Optra R

lexmark all in one 3500-4500

the retaing clip which locks the cartridge in place has sprung out, it appears intact but I cannot replace it, I cannot use the printer at all , as the program won't continue with a cartridge missing, any advice as to how I can replace the clip, any suggestions are welcome. thank you.
r murray