| 摘要 |
PURPOSE:To improve the quality of self-diagnoses such as adjustments of a magnetic disk unit and the detection of a fault point, by enabling a microcomputer to oherate as various mechanism parts of a microcomputer-control magnetic disk unit. CONSTITUTION:Part of the external access function of a microcomputer is allotted to ON-OFF states of various control information signals and the microcomputer is supplied with various information by the external access function of the microcomputer to generate false signals in accordance with signals from mechanisms to be controlled, so that a check on whether control over each mechanism is normal or not will be made. Control information and various detection signals generated by the servomechanism, mechanical control mechanism, abnormality detection mechanism 16, etc., of the magnetic disk unit are artificially generated, so that the operation of each part to those signals can be diagnosed. |
