1.2 Configuration of Optical Disk Drive
1.2.2 Configuration
Figure 1.3 shows the configuration of the optical disk drive.
The optical disk drive consists of a mechanical section, a fixed optics section, a control circuit section, and an actuator.
The mechanical section includes the spindle motor, actuator section, bias magnet, and cartridge holder vertical motion mechanism.
The fixed optics section consists of the optical components, position detector, and LD controller.
The control circuit section includes the drive control circuit section and I/F circuit section.
Mechanical section | Control circuit section |
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Spindle motor | Actuator | Fixed optics section | |
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Figure 1.3 Configuration of optical disk drive
1.2.3 Mechanical section
(1) Loading and ejecting an optical disk cartridge
The optical disk drive includes a cartridge load mechanism and an auto eject mechanism. If an optical disk cartridge is manually inserted in the drive's slot as far as it will go, the cartridge load mechanism automatically lowers the cartridge and mounts it on the spindle motor. If the Eject button on the front panel is pressed, the auto eject mechanism automatically ejects the cartridge.
(2) Spindle motor
An optical disk cartridge hub and the spindle motor shaft are magnetically combined. Therefore, a disk rotates as fast as the spindle motor shaft rotates. The spindle motor, a DC brushless motor, provides
