Sharp FDD-412A Service Manual page 44

FDD4124/B
(12)
T; 2 100 ms T32 lus
T2 > 100 ms
This signal must not be issued during a read/write operation.
The door is locked while the head is engaged, independent of
this signal.
This signal can be nullified by switching a shorting-plug on
the PWB.
.
Fig. 2.51 DOOR LOCK SET/RESET Signal Timing
VFO SYNC-N
DATA AREA-N
See Figs. 2.52 and 2.53.
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