Tandy 1400LT - VCC Detector

Standby
When the Motor On Signal becomes “High”, the power consumption is very little in the standby mode.
Vcc Detector.
The FDD has a Vcc detector in itself.
Figure
C-13 shows the operation of Vcc detector.
Write Possible
Seek Read I
Seek } Possi
Read
3.8 V(TY P)
moving
Level
Figure C-13. Vcc Detector
In Use Lamp
In Use Lamp lights when cartridge is incerted, and both DRIVE SELECT and MOTOR ON signals are low.
C-15