Case:
After the customer’s Samsung notebook hard disk is powered on, the motor rises. After reaching the constant value, the magnetic head cannot be reset. Start knocking on the disk and stop rotating three or four times.
Solution:
Most of these faults are related to the firmware and magnetic head, and the specific situation must be excluded one by one.Because this disk is used for a long time, and the physical injury is found at the end of the communication with the user, the failure is first set on the hardware, that is, the magnetic head.Then consider the problem of firmware.There are just accessories on hand. First, find a model to replace the magnetic head. After opening the hard disk, it is found that there is a difference between the coil of the magnetic group.When the magnetic head was replaced, some small places were also found. The start -stop frame of the fault disk was automatically in and out of the magnetic head, while the preparation was not.Only when the magnetic head was changed, I found that the magnetic head of the preparation can not be installed in the fault disk. Once the magnetic head fixed screw is tight, the magnetic group is stuck. It seems that the two magnetic groups are not produced by the same manufacturer.Find another hard disk, which can be matched normally after changing this magnetic head. After the power is charged, there is a knocking sound, but then the magnetic head can be ready. The hard disk can be recognized by DE. Other things are data.