Tandy 1000 Technical Reference Manual

Tandy 1000 Technical Reference Manual
When removing the band fixing plate A from the head carriage, it will
be removed easily if it is shifted toward the front bezel side and then
drawn out in a right angle
(7) Remove the belt fixing screw (Fig.SOS, 5B) on the capstan of the steppinc
motor ASs'y (Fig. 505, No.12) and then remove the band washer (Fig.SOS,
No.20) and the steel belt.
(B) Remove the stepping motor ASS'y by removing the fixing screws (Fig.SOS,
54) .
(9) Install a new stepping motor Ass'y as it was.
(10) Fix a new a-shape steel belt temporarily to the capstan of the new
stepping motor with the band washer and the screw in item (7).
Note: Fundamentally, the steel belt and the band spring should be replaced
with the stepping motor. However, if there is no inferior points
for these belt and spring, they may be used after cleaning the
surface carefully with alcohol and gauze.
(11) Connect the steel belt and the head carriage using the band fixing plate~
A and B and band spring in the reverse order of items (4) through (G).
(12) After moving the head carriage several times manually, tighten the
steel belt fixing screw in item (10) carefully with the specified
torque. At this time,be careful so that the belt is tensioned straightl)
Pay attention not to damage the surface of the belt or the capstan.
(13) Install the PCBA MFD control in the reverse order of items (2) and (3).
(14) Loosen the fixing screw (Fig.SOS, 54) of the track 00 stopper (Fig.50S,
No.G) and shift the stopper toward the rear side of the FDD.
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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