KLA-Tencor Critical Dimensions Scanning Electron Microscope (CD-SEM) models 8100, 8250, 8300, 8450 can suffer from imaging malfunctions as the result of a failed Column Control Chassis II (CCC2) unit – part number 720-06884-002. The observed failure mechanism is usually a ripple distortion effect along one or more view axes (see below images for clear examples). GetSpares maintains fully operational KLA SEMs in their warehouse, as well as the ability to repair these critical electronics. This means parts sent in for repair get fully tested in a functional tool before being sent out – so you can be assured of top quality service. Contact GetSpares today for replacement/repair solutions!