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5.3
Check and Adjustments
5.3.1 Diskette rotational cycle adjustments
1)
Equipment
CE Tester
Scratch Diskette
Universal Counter
VR Adjustment Driver
2)
Adjustment procedure
2)-1 Connect CE Tester to Drive then turn-on. power switch.
2)-2 Load diskette then turn-on motor with drive select.
2}-3 Make sure HLMG ON.
2)-4 Seek to TKOO.
2)-5 Connect universal counter to INDEX (interface signal!
and measure rotational cycle rate.
2)-6 Adjust counter reading until it comes within
specifications using SPM VR (see Figure 4).
2)-7 After this adjustment, Lock VR with white paint.
3)
Test specification
3)-1 Check: ±1.6% (196.8 - 203.2ms)
3)-2 Adjust:
±1.0% (198.0 - 202.0ms)
-6-
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