Tandy 1400LT - Timing of the Spindle Motor Rotation; Power Supply and Current

POWER INTERFACE
The power supply and current are shown in Table C-2.
4.4v
TYP
I MAX
5v
5.5v
TYP
I MAX TYP MAX
Standby
Read/Write
Seek
* (AVE.)
Motor Start *2
* 1 : Spindle Motor on.
*2: For about 100 msec from Motor on.
5.6 (6) 6.5 (7) 7.0
(8)
280 340
300 360 3 20 380
440
500
490 550 530 590
710 750
750 790 780 870
Table C-2. Power Supply and Current
Run
SPINDLE MOTOR
OTHER FUNCTIONAL CHARACTERISTICS
Automatic Motor On/Off
The Spindle Motor starts when both of the following conditions are satisfied.
a) The cartridge is correctly loaded.
b) The MOTOR
ON signal is “Low”.
Run Stop
Stop
The Sindle Motor stops when either of the above is not satisfied.
Figure C-12 shows the timing of the spindle motor rotation.
High
MOTOR ON
LOW
J High I LOW 1
DRIVE SELECT
Low
1 t 1
CARTRIDGE
I Looding I OUT
Loading
Figure C-12. Timing of the Spindle Motor Rotation
C-14