CARTRIDGE SCREENING TECHNIQUE USING ELECTRICAL DYNAMIC BEARING RESISTANCE

摘要

CARTRIDGE SCREENING TECHNIQUE USING ELECTRICAL DYNAMIC BEARING RESISTANCE Abstract of the Disclosure A method for characterizing a bearing cartridge based on a preloadapplied to the bearing cartridge used in a disc drive, to increase disc drive yield rates.The method begins by loading the bearing cartridge on to a and to an actuatorassembly such that the actuator is rotatably attached to the base by the bearingcartridge. Then, the method includes inducing a steady swing in the actuator. Then,the method includes measuring a voltage drop that occurs across the bearingcartridge during the steady swing to characterize the preload applied to the bearingcartridge.