Table of Contents
Advertisement
2.0 Functional Characteristics
2.1 General Operation:
The STS06 disc drive consists of read, write, and control electronics,
read/write heads, track positioning actuator, media, and air filtration
system. The components perform the following functions:
1. Interpret and generate control signals.
2. Position the heads over the desired track.
3. Read and Write data.
4. Provide a contamination free environment.
2.2 Read/Write and Control Electronics
The electronic are packaged on two printed circuit boards. The Main
Control PC Board, to which power, control, and data signals are con-
nected includes:
1. Index detection circuit.
2. Head position/actuator circuit.
3. Drive up-to-speed circuit.
4. Drive select circuit.
5.
Read/write circuits.
6. Head select circuit.
7. Write fault detection circuit.
8.
Stepper motor drive circuit.
9.
Track 0 detector circuit.
The Motor Control PCB provides the speed, power and braking con-
trols for the spindle motor. The Motor Control PCB derives its' power
from and is mounted below the Main Control PC Board.
2.3 Drive Mechanism
A direct drive brushless DC motor rotates the spindle at 3600RPM.
The spindle motor is thermally isolated from the HeadlDisc assembly
(HDA) to minimize temperature rise within the sealed HDA chamber.
The motor and spindle are dynamically balanced to ensure a low
vibration level. The HDA is shock mounted to minimize transmission
of vibration from the chassis or frame.
-4-
Advertisement
Table of Contents
