60.2 is tray 2 lifting motor error.
Check for obstructions in the lifting assembly and then check J93 is seated correctly on the DC controller.
If no one has been workiing on the printer recently then the only two components that can be at fault are the DC controller or the liftin assembly.
If someone has been working on the printer then tray 2 lifting assembly has not been put back together correctly, take the covers off and you will be able to observe the lifting taking place, this may help you decide if the motor is rotating etc.
I have worked on the 4200/4300 and seen a colleague fit the assebembly incorrectly which caused this error, removal and correct fitting sorted it out.