Posts Tagged ‘hdd Components’

Platter Scratch Repairing

December 12th, 2008 Comments off

Hard Disk Drive Crash Take the case of computer systems. We become so used to working on the computer on a regular basis that we are rarely ready to face the consequences if things go wrong. This is truer of a computer hard disk drive crash than of anything else. Hard drive malfunction can be divided into two types: one is the so called Firmware Level malfunction that can be …

Data Interface Connector or Card

December 11th, 2008 Comments off

Modern hard disk drives use one of two interfaces: IDE (ATA) – Integrated Drive Electronics (also called ST506 drives) and its variants (EIDE – Enhanced Integrated Drive Electronics, or the SCSI (Small Computer System Interface). You can tell immediately by looking at the back of the hard disk which interface is being used.

1. IDE hard disks use a 40-pin connector, and SCSI hard disks normally use either a 50-pin …

Hard Drive Power Connector

December 11th, 2008 Comments off

Hard disk drives use a standard, 4-pin male connector plug that takes one of the power connectors coming from the power supply. This keyed, 4-wire plastic connector provides +5 and +12 voltage to the hard disk.

PCBA, control circuitry (Printed Circuit Board Assembly)

December 11th, 2008 Comments off

All modern hard disks are made with an intelligent circuit board integrated into the hard disk unit. Early hard disks were virtually all of the control logic for controlling the hard disk itself was placed into the controller plugged into the PC; there were little smarts on the drive itself, which had to be told specifically how to perform every action.

As newer drives were introduced with more features and …

Hard Disk Drive Controller

December 11th, 2008 Comments off

Since digital information is a stream of ones and zeros, hard disks store information in the form of magnetic pulses. In order for the PC’s data to be stored on the hard disk, therefore, it must be converted to magnetic information. When it is read from the disk, it must be converted back to digital information. This work is done by the integrated controller built into the hard drive, in …

Hard Drive Spindle Motor

December 10th, 2008 Comments off

The spindle motor, also sometimes called the spindle shaft, is responsible for turning the hard disk platters, allowing the hard drive to operate. The spindle motor is sort of a “work horse” of the hard disk, like a heart of human, it give the motivity of power to the HDD. It’s not flashy, but it must provide stable, reliable and consistent turning power for thousands of hours of often continuous …