Tandy 1000 HX Technical Reference Manual page 384

3.5 Power On and Power off Requirements
3.5.1 Data Protection
Turning power on or off does not cause any damage to
recorded data on the disk as the drive is not in the
midst of writing when the power is shut off or supplied.
3.5.2 Power Supply Sequencing
No special supply sequencing is required by the disk drive
as long as both the 5V and 12V power supplies have a
monotonic rise time of less than 100msec. When the power is
turned off, although there are no sequencing or timing
requirements, both power supplies must fall monotonically to
OV.
3.6 Disk motor rotation and Disk Insertion.
Even if the MOTOR ON signal is true (low) , the disk motor does
not rotate until a disk is inserted.
4. Safety
MP-F63W-00D will meet the following product safety regulations:
U.L. 478
C.S.A. C.22.2, No.154
U.L. 94V-0 for Front Bezel
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