2.
Trouble
Shooting
The following procedures are recommended to see if the drive is really faulty or not.
2-1
BEFORE TROUBLE SHOOTING
Incorrect operational procedure.
Program error of host system.
Poor connection with host system (e.g. GND-related connection, frame GND, etc.).
Defective disk; Check that same trouble occurs with other disks.
Environmental conditions (where electrical noise easily jumps into signal).
Influence of strong magnetic field.
Wrong supply voltage.
2-2
TYPES OF ERROR ON
A
SYSTEM LEVEL
2-2-1
Software Error
Software errors are caused by
Dirty heads.
Electrical noise.
Tracking error.
Poor connection with system (GND-related connection).
Incorrect motor speed.
Incorrect head compliance.
Clean the heads first. Check for index pulse interval and then read error spot more than several times.
If
not readable, confirm the heads alignment.
If alignment is wrong, adjust it and read again.
If still not readable, the error is not recoverable.
D-2
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