The functions of each part of the optical drive panel
1. Optical drive panel
a) The headphone jack, volume control knob, and optical drive logo are usually located on the upper left.
b) "CD play button" (its function is to play Audio CD directly without going through CPU processing) and "barrel door entry and exit switch" (control the entry and exit of the barn door).
c) "Emergency eject hole". When the optical drive cannot open the door, you can insert a small wire into the hole and push it with a little force to open the door.
d) Indicator light, this indicator light will be on when there is a disc in the optical drive, and it will flash when the disc is being read or written.
e) If it is a CD-RW burner, you may see words such as "48×24×48×" on the upper right side of the optical drive panel, indicating that the CD-ROM drive's writing speed is 48 speed. The writing speed of CD-R/RW discs is 24-speed, and the reading and writing speed is 48-speed.
2. Back interface
The interfaces of the optical drive mainly include audio interface, jumper interface, data interface and power interface.
The main function of the audio cable interface is to connect a 4-core or 3-core CD audio cable to the sound card, so that music CDs can be played directly through the optical drive.
On the right side of the audio cable interface is the jumper setting of the optical drive. Usually the optical drive has been set as the slave disk when it leaves the factory.
When there is only one hard disk and optical drive, it is recommended to connect the optical drive to the second IDE interface of the motherboard and set the optical drive jumper to the main disk position.
The data interface of the optical drive connects the optical drive to the IDE socket of the motherboard through a data cable. Needless to say, the power interface is used to power the optical drive.
3. Internal structure of the optical drive
The internal structure of the optical drive mainly includes the laser head, PCB board and mechanical part.
The laser optical head is responsible for reading and writing information from the optical disc. On the PCB circuit board are various circuits that control the reading and writing of information from the optical disc drive. In addition, the rotation of the optical disc in the optical drive, and the work of entering and exiting the optical drive must be completed by the mechanical part.
In addition to these main parts, don't ignore the "firmware" (Firmware) similar to the motherboard BIOS in the optical drive. We can improve the performance of the optical drive by refreshing the Firmware, and we can also solve region code restrictions for DVD-ROMs.
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