Inspection apparatus and inspection method for magnetic head or magnetic disk and inspection method for magnetic head

An inspection method for a magnetic head or a magnetic disk, in which the magnetic disk is rotated by a spindle, a test signal is written into the magnetic disk by one magnetic head mounted in one carriage which moves in the radius direction of the magnetic disk, and the test signal of the magnetic disk is read by the other magnetic head mounted in the other carriage which moves in the radius direction of the magnetic disk to inspect the performance of the magnetic head or the magnetic disk using the read signal, wherein

• sector pulses to determine servo timing for reading servo burst signals preliminarily written into the disk are formed on the basis of a clock signal and an index signal generated along with the rotation of the spindle.

An inspection method for a magnetic head, in which the magnetic disk is rotated by a spindle, a test signal is written into the magnetic disk by one magnetic head mounted in one carriage which moves in the radius direction of the magnetic disk, and the test signal of the magnetic disk is read by the other magnetic head mounted in the other carriage which moves in the radius direction of the magnetic disk to inspect the performance of the magnetic head using the read signal, wherein

• the one magnetic head mounted in the one carriage or the other magnetic head mounted in the other carriage is continued to be mounted to replace remained magnetic head between the one magnetic head and the other magnetic head, and to conduct a test for the performance of the remained magnetic head.