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Siemens Microfloppy FDD100-5 Operating And Maintenance Manual
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3.4 LOADING THE DISKETTETo load the diskette, open the door on the front panel of the Model FDD100-5 Disk Drive, insertthe diskette, and close the door. A door interlock mechanism prevents the door from closing if thediskette is not properly loaded. The door may be closed without a diskette being loaded.3.5 WRITE PROTECT FEATUREThe diskette is protected from being written on when a Write Protect tab is used. Figure 3-1 showsan unprotected (Read and Write), and a Write-protected (Read-only) diskette. A photoelectricsensor detects the presence or absence of a notch in the side of the diskette. When the open notchis sensed, writing is allowed. When the notch is not sensed (covered with a tab), writing is inhibited,and a status signal informs the controller that a Write Protect condition exists. Optional modifica-tion to the disk drive electronics may cause the Write Protect signal to go only to the disk drivelcontroller interface which will not inhibit writing on the diskette.WRITEPROTECT__llTCHUNPROTECTEDWRITEPROTECTI TAB'-----------le /©ooWRITE PROTECTEDFigure 3-1. Write Protect Feature3-2 |
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