Inch Floppy Disk Drive - Toshiba 730CDT Maintenance Manual

1.3

3.5-inch Floppy Disk Drive

The removable 3.5-inch FDD is a thin, high-performance, reliable drive that supports 720-KB
(formatted) 2DD and 1.44-MB (formatted) 2HD disks. When a CD-ROM is installed in the
Selectable Bay, an FDD attachment can be used to connect the FDD to the external FDD
port.
The FDD is shown in Figure 1-4, and its specifications are listed in Table 1-1.
Item
Storage capacity (KB)
Unformatted
Formatted
Number of heads
Number of cylinders
Access time (ms)
Track to track
Average
Head settling time
Recording track density (tpi)
Data transfer rate (Kbps)
Rotation speed (rpm)
Recording method
730CDT
Figure 1-4 3.5-inch FDD
Table 1-1 3.5-inch FDD specifications
2-MB mode
Modified Frequency Modulation (MFM)
1-MB mode
2,000 1,000
1,440 720
2
80 80
3
181 181
15 15
135 135
500 250
300 300
2
3
1-9