Maxtor 52049H3 - Manual (Page 14)

PRODUCT DESCRIPTION
2 – 4
Major HDA Components Major HDA Components Major HDA Components Major HDA Components Major HDA Components
Drive Mechanism Drive Mechanism Drive Mechanism Drive Mechanism Drive Mechanism
A brush-less DC direct drive motor rotates the spindle at 7200 RPM (±0.1%). The dynamically balanced
motor/spindle assembly ensures minimal mechanical run-out to the disks. A dynamic brake provides a fast
stop to the spindle motor upon power removal. The speed tolerance includes motor performance and motor
circuit tolerances.
Rotary Actuator Rotary Actuator Rotary Actuator Rotary Actuator Rotary Actuator
All Maxtor hard drives employ a rotary voice coil actuator which consists of a moving coil, an actuator arm
assembly and stationary magnets. The actuator moves on a low-mass, low-friction center shaft. The low
friction contributes to fast access times and low power consumption.
Read/Write Electronics Read/Write Electronics Read/Write Electronics Read/Write Electronics Read/Write Electronics
An integrated circuit mounted within the sealed head disk assembly (near the read/write heads) provides up
to eight head selection (depending on the model), read pre-amplification and write drive circuitry.
Read/Write Heads and Media Read/Write Heads and Media Read/Write Heads and Media Read/Write Heads and Media Read/Write Heads and Media
Low mass, low force giant magneto-resistive read/write heads record data on 3.5-inch diameter disks. Maxtor
uses a sputtered thin film medium on all disks for all Maxtor hard drives.
Air Filtration System Air Filtration System Air Filtration System Air Filtration System Air Filtration System
All Maxtor hard drives are assembled in a Class 100 controlled environment. Over the life of the drive, a 0.1
micron filter and breather filter located within the sealed head disk assembly (HDA) maintain a clean
environment to the heads and disks. All DiamondMax drives are designed to operate in a typical office
environment with minimum environmental control.
Microprocessor Microprocessor Microprocessor Microprocessor Microprocessor
The microprocessor controls the following functions for the drive electronics:
Command execution
Cache management
Data correction and error recovery
Diagnostic execution
Data sequencing
Head positioning (including error recovery)
Host interface
Index detection
Spin speed control
Seeks
Servo
S.M.A.R.T.