T4900CT
1-9
1.3
3.5-inch Floppy Disk Drive
The T4900CT 3.5-inch Floppy Disk Drive (FDD) is a thin, high-performance reliable drive
that supports 720-KB (formatted) 2DD and 1.44-MB (formatted) 2HD 3.5-inch floppy disks.
The T4900CT FDD is shown in figure 1-4. The specifications for the FDD are described in
table 1-1.
Figure 1-4 3.5-inch FDD
Table 1-1 3.5-inch FDD specifications
Item
2-MB mode
1-MB mode
Storage capacity (KB)
Unformatted
2,000
1,000
Formatted
1,475
737
Number of heads
2
2
Number of cylinders
80
80
Access time (ms)
Track to track
3
3
Average
94
94
Head settling time
15
15
Recording track density (tpi)
135
135
Data transfer rate (Kbps)
500
250
Rotation speed (rpm)
300
300
Recording method
Modified Frequency Modulation (MFM)
Summary of Contents for T-Series T4900CT
Page 20: ...T4900CT 2 3 Figure 2 1 Troubleshooting flowchart 1 2 ...
Page 176: ...B 2 T4900CT Figure B 2 Upper system board back ...
Page 178: ...B 4 T4900CT B 2 Lower System Board Figure B 3 Lower system board front ...
Page 179: ...T4900CT B 5 Figure B 4 Lower system board back ...
Page 199: ...T4900CT D 1 Appendix D USA Display Codes Table D 1 USA display codes ...
