YE Data YD-380 5.25 inch HH HD Floppy.pdf
YE Data YD-380 5.25 inch HH HD Floppy.pdf
YE Data YD-380 5.25 inch HH HD Floppy.pdf
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4.9 Drive Motor Assembly (Refer to Chapter 5, figure 2)4.9.1 Service Check1. Power up the drive.2. Insert a disk and move the front lever to lock position.3. Set the MOTOR ON signal on the interface to Low Level inorder to start the drive motor.4. Load the read/write heads against the disk.5. Connect a counter to TP3 and GND on the PWB.6. Verify that the index pulse period (TP3) is within 166.7 mstl.5% (164.2 to 169.2 ms).____n166.7 ms ~ 1.5% D.... _Figur~ 4.9.1Variable ResistorDrive MotorRotorMotor Control P\lBFigure 4.9.2
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