A self-balancing, shoulder type elevator is comprised of two opposing jaws pivotally connected to a hinge plate. One embodiment of an e-fuse structure includes: a silicon structure; a pair of silicide contact regions overlying the silicon structure; and a silicide link overlying the silicon structure and connecting the pair of silicide regions, the silicide link having a depth less than a depth of each of the pair of silicide contact regions. Then, the mobile device rotates in a second direction opposite to the first direction until the detector fails to detect the navigating signal, and a second time point is set at this time. The communication line on which the maintenance operation is performed, is changed after the operation is complete, so that all of the N+1 communication lines are periodically maintained, without interfering with communications on N of the N+1 communication lines. Similarly the jitter in the output signal of a phase locked loop, using the charge pump, can be reduced.