| 摘要 |
PURPOSE:To compensate variance of a cartridge disk for magnetic head adjustment by providing a correcting circuit corresponding to each cartridge disk for magnetic head adjustment, and connecting the correcting circuit to a printed board for the magnetic head adjustment detachably. CONSTITUTION:The deviation of each cartridge disk for magnetic head adjustment from a master cartridge disk for the magnetic head adjustment is measured previously, and the corrected value of a correcting circuit 1, i.e. the resistance value of a variable resistor is determined corresponding to each cartridge disk for magnetic head adjustment. This correcting circuit 1 is connected through a connector 3 to a printed board 2 for magnetic head adjustment which includes a plus peak holding circuit 4, a minus peak holding circuit 5, and an adder 6, and the voltage of either of the peak holding circuits 4 and 5, e.g. circuit 4 is corrected by the correcting circuit 1 and inputted to the adder 6. |
