Tandy 1000 Technical Reference Manual

Tandy 1000
TP4 (Index)
Technical Reference Manual
TP7 or TP8
t
Index burst delay
(Fig.430) Index burst timing
(f) Confirm that the true value of the index burst timing is within the
following range.
Index burst timing 200±200~sec
(g) If the value in item (f) 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.431) of the PCBA index sensor
and adjust its position to make the true value of the index burst
timing gall in the specified range in item (f).
ii) Repeat the adjustment so that the true value of the index burst
timing falls in the range of item (f) when the fixing screw has
been tightened with the specified torque.
iii) Apply a drop of locking paint on the fixing screw head.
(h) Remove the alignment disk.
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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