Appendix 4. Selecting A Donor Heads Stack - ACE Lab PC-3000 Express Manual

PC-3000 EXPRESS / UDMA / PORTABLE 
 ACE Lab
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12. ppendix 4. Selecting a donor heads stack
To select a suitable donor heads stack, the following criteria should be used:
♦
Names of the donor and patient drives must match to ensure that the drive family and the number of used
magnetic heads are the same
♦
The number of magnetic heads and their map in the patient and donor drives must match.
♦
To test suitability of the donor heads, install the original controller board from the patient drive onto the
potential donor HDA, switch on the power and watch over the start of the produced "hybrid" device. If the
HDD produces strong and quick knocking sounds with the heads and stops the spindle motor, these heads
are incompatible. If the drive does not stop and recalibration attempts are noticeable, you can try using the
set as a donor part. Unfortunately, success cannot be guaranteed in all cases because the parameters of
heads vary widely not only between different HDD, but even within a single magnetic heads stack. Still,
the heads stack selected using this method will have the highest chance of compatibility.
Attention! Back up the ROM content prior to any modification! ROM contains unique settings of the drive, their loss
or corruption will result in irreversible damage to the HDD.
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Smaller drives belonging to the same family may be used, but in that case you will have to perform additional steps
for modification of information in ROM and some work with the HDA mechanics. If you have no successful
practical experience of such operations, using donor HDD with fewer magnetic heads than in the patient drive is
strongly discouraged.
Technical support: ts@acelab.ru
Phone: +7 863 201 50 06
ts.acelaboratory.com
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