Patent ID: 8228085

Claim:
A method of testing an integrated circuit of a device, comprising: removing a first cartridge from an apparatus frame, wherein the first cartridge includes a common subassembly, including a cartridge frame, and a first unique contactor subassembly mounted to the common subassembly; replacing the first unique contactor subassembly with a second unique contactor subassembly by removing the first unique contactor subassembly from the common subassembly and mounting the second unique contactor subassembly to the common subassembly in a position previously taken by the first unique contactor subassembly so that the common subassembly and second unique contactor subassembly jointly form a second cartridge; removably mounting the second cartridge to the apparatus frame by securing the cartridge frame of the common subassembly removably to the apparatus frame; connecting a surface of a connector interface to a surface of a contactor interface of a contactor board assembly forming part of the second unique contactor subassembly of the second cartridge; holding the device against a surface of a holder; moving the contactor board assembly relative to the holder to bring terminals of the contactor board assembly into contact with contacts on the device; and providing signals through the connector surface, the contactor interface, the terminals and the contacts to the integrated circuit.