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 the PSA side.
(b) Start the spindle motor by key "5". (MON indicator turns on).
(c) Install an alignment disk.
(d) Execute drive select by key "0". (DSO indicator turns on).
(e) Key in "CO" and confirm that the TRACK indicator becomes "00".
(RECALIBRATE)
(f) Set the head to the index check track.
Key in "C2 01" and confirm that the TRACK indication becomes
"01" _
(g) Key in "EG". (INDEX TIMING)
The calibration value of the index timing should be set previously
in the SKA.
(h) Confirm that the DATA indicator []][JJ (~s) indicates the value within
the following range.
Index burst timing: 200±200~sec
(i) Key in "F". (STOP)
(j) If the value in item (h) is out of the specified range, adjust the
index sensor Ass'y position according to the following procedure.
i) Loosen the fixing screws (see Fig.43l) of the PCBA index sensor
and its position so that the DATA indication under execution shows
the median value in the specified range of item (h).
- 4088 -

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