OPTICAL DISC DRIVE (ODD)

INTRODUCTION

TYPES CONNECTING

AN ODD TROUBLESHOO

T

OBJECTIVES :

An optical disc drive (ODD) is a disk drive that uses laser light or electromagnetic waves  as part of the process of reading or writing data to or from optical discs.

Introduction

An ODD can work with multiple types of discs will therefore contain multiple lasers. The mechanism to read and write data consists of a laser, a lens to guide the laser beam, and photodiodes to detect the light reflection from the disc.

Some drives can only read from certain discs, but recent drives can both read and record, also called burners or writers.

Types

•CD DRIVE•DVD DRIVE •BLU-RAY DRIVE

CD Drives• A CD drive is a device a computer uses to read and write data

from or to a CD.

Types of CD Drives : 1. 2.

CD-ROM Drive CD-R Drive

3.

CD-RW Drive

CD-ROM drive – Reads data from a CD. CD-R drive – Reads data from CD and can also write to CD . CD-RW drive – Read , write and Rewrite. The speed of CD drive specifies the amount of data the CD drive reads

from the CD calles as Transfer Speed .• Speed of CD drive = 150kbps.

“X”- Specifies the number of times the original speed of CD drive must be multiplied with , to attach the speed of CD drive.

Ex :- 52X = 52x150=93,600 kbps.

Some time we find a specification as 52x/48x/52x which refers toWrite/Rewrite/Read .

CD (COMPACT DRIVE ) :

Storage device used to store and distribute various forms of data such as software,music,movies and applications CD are of two types . First an 12cm CD and 8 cm . An 12cm cd can store data upto 700 MB whereas the 8cm can only store an 80% Data of 12cm cd. Both of them have an 1.5 cm hole in the middle which is the size of a 5 rupee coin . This is an cheap an reliable media this is used to read and write data from or to a cd drive.

DVD Drive :

DVD Driven can different types of DVD’s. It can also accept an CD to read and write. The structure of DVD is differentiated as front panel and back panel .Front panel as an tray which accepts DVD . An eject button used to open an close the tray. The light indication of the CD or DVD status is also located in front panel.

The back panel has ports to connecting the DVD drive to the computer . It has an power, jumpers and IDE/SATA connectors. Speed of DVD drive can have two to three speed.

For example:- 1. “ 4x/24x ” 4x- max speed at which data is read from DVD. 2x- max speed at which data is read from CD. 2. “ 16x/6x/16x ” DVD- R write speed 16x DVD- RW write speed 6x DVD read speed 16x

[ NOTE : 1x=1352.54 KB/S ]

DVD ( Digital versatile/video disc )

DVD is a digital storage disc used to store music , video games , multimedia applications. DVD is similar to CD in appearance and

structure. It offers higher capacity and better quality as compared to CD. A DVD can store 4.7 GB of data.

A DVD drive is required to read or write data from or to a DVD.

Blu-ray Disc Drive

The is a player used to play only Blu-ray disc. It was developed by Blu-ray association, consumer electronics and media manufactures.Blu-ray disc enables to record up to 25 GB of data or up to 2 hour of high definition video on a single sided.It has single and double layer format and uses industry standard MPEG-2 compression technology.A single layered BD can store upto 25 GB and a double to layered BD can store upto 50 GB data.The re-writable Blu-ray disc has data transfer rate of 36 Mbps( 1Xspeed). [Here 1X=4.5 MB/s].The Blu-ray player only accepts Blu-ray disc . The cost of Blu-ray disc is more compared to CD and DVD’s.

Connecting an ODD to PC

To connect an ODD to PC we need an interface which is sub divided to:-

• Internal – IDE or SATA• External – USB or Fire wire

These are physical connectors to computer from ODD.

Few steps to be followed to connect an ODD to PC.They are as follows -

• Jumpers setting s• Connecting the cables properly • Detecting ODD through Bios• The setting should be manually checked before and after

connecting an ODD .if this all fails the problem is with ODD so, have to replace it. Jumper setting to be put in master before connecting to PC. Bios have to be set in default if ODD not detected

TROUBLESHOOT :Basically there are two possibilities of problems occurred by optical disc drive.

Window based problems Hardware based problems

Window Based

1. Your CD or DVD drive is not recognized by windows :

Check for scratches , check if it is clean. Use a soft liner cloth to clean it. Check with another disc, if it plays , the problem is with the disc. Check for light glow when disc is inserted. Access the BOIS Check the interface and power cables of drive and connect it properly.

2. BIOS connect detect the drive:

Restore the BIOs settings to factory default and then check if the drive is detected in the BIOS.

Check the interface cable is connected properly to motherboard. Check the cable supplying power to the drive is properly connected. Finally, check if the drive is detected by testing it on a different system.

HARDWARE BASED

1. Power LED is not glowing in the DVD drive :

Connect the different power supply to the drive Replace the LED, even after the replace of power supply. Check the LED and replace it. Replace the drive.

2. The tray of DVD is not opening :

• Restart the computer , then try to open the tray.• Check the BIOS setting to see whether the computer recognizes the drive.• Shut down the computer , use a paper clip to insert in the pinhole on the

front of the DVD drive. Push the paperclip in tray to open the tray a little and open with your finger.

3. Cleaning of DVD drive :

Shut down your computer. Remove the disc drive. Unplug the interfaces. Clean it using an lens cleaning kit.

By :T . NAGARAJANKT-1516-0100BATCH NO : 020

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