Hello All, Your assistance in helping me resolve this error would be highly appreciated. Sharp MX-3640 showing "Call for service F2-40" this is a brand new copier. The toner cartridges were opened and installed first, and it was switched on without any developer in it. The user proceeded to install the developer and still the message was showing "Call for service F2-40" What can I do to resolve this? What sim can I run to clear the error? Or is the developer messed up due to toner mixing up in the developer?
Please kindly assist.