May 2014
Intermediate to advanced
320 pages
13h 41m
English
Content preview from Servicing Personal Computers, 3rd Edition
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164 Servicing Personal Computers
Figure 4.23. Partially disassembled printed motor drive assembly on a modern 5.25 inch disk drive
Tape and disk drives 165
Figure 4.24. Index hole sensor (accessible after dismantling the drive motor assembly -
see
Figure
4.21
)
The first mini-floppy disk drive to gain popularity was the SA400 from Shugart Associates.
This 35 (or 40) track drive provides an unformatted capacity of 125K bytes in single density
(FM) or 250K bytes in double density (MFM), the data transfer rates being respectively
125 Kbit/sec an ...