Tandy 1400LT - Functional Diagram

FUNCTIONAL CHARACTERISTICS
General Operation
The FDD consists of:
(1) Read/Write and Control Electronics
(2) Drive Mechanism
(3) Precision Track Positioning Mechanism
(4) Read/Write Head (s)
READ
READ DATA
4 -CIRCUIT
-
WRITE HEAD -
WRITE
WRITE DATA
Fig. C-1 shows interface signals for the internal functions of the FDD
0
STEP
4
DIRECTION
DRIVE SELECT
-
TRACK 00
4
4
4
INDEX
READY
CONTROL
CIRCUIT
m
INDEX
MOTOR ON
-
-
STEPPING MOTOR -
TRACK 00
-
*
CASETTE IN
WRITE PROTECT
0
Figure C-1. Functional Diagram
c-3