Tandy 1000 Technical Reference Manual

Tandy 1000
(2) SKA method
Technical Reference Manual
(a) Connect the SKA referring to item 4-2-4 and set the FD PWR switch
to PSA side.
(b) Start the spindle motor by key "5". (MON indicator turns on).
(c) Insert a soft sectored work disk.
(d) Execute drive select by key "0". (DS 0 indicator turns on).
(e) Key in "CO" and confirm that TRACK indication becomes "00".
(RECALIBRATE)
(f) Key in "C3". (INDEX PERIOD)
(g) Confirm that the DATA indicator CIJC[J (ms) indicates a value within
the following range.
INDEX interval: 200.0±3.Omsec
(h) If the value in item (g) is out of the specified range, adjust the
variable resistor Rl on the PCBA DD motor servo to obtain the median
value in the specified range in item (g).
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Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200