Software Errors - AMSTRAD CPC6128 Service Manual

Software Errors
Detection and Correction of ''Soft Errors"
Soft errors are usually caused by the following reasons.
1) Random external noise of several usec or less.
3) Repeat the step 1.
4) If the data is not restored by the above steps, the error cannot be remedied
Write Error
Seek Error
1) Step motor or step motor drive circuit is defective.
2) The torque of the carriage is not correct.
Restoration procedures from the seek error.
Make the re-calibration to the track OO. Then, carry out the re-seek to the original track.
Notes:
1) Always ensure the head is clean.
2) Index/Sector Factor (Ready Defect)
As the unit has Optional Read Output
It is normally not ready until 2 revolutions are made after the disk insertion.