HP Surestore 160ex - Optical Jukebox, Service Manual

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Theory of Operation
Optical Drive Mechanism
Chapter 6 6-21
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Optical Drive Mechanism
Figure 6-8 provides an overview of the optical drive mechanism.
Figure 6-8 Optical Drive Functional Diagram
Controller
The controller is a highly-specialized integrated circuit that handles
SCSI control, data buffering, and encode/decode.
The data buffer function provides a buffer to match transfers to and from
the host computer and the optical disk. The data buffer provides a cache
for read and write operations, optimizing the speed of these transfers.
This controller provides the SCSI interface connection to the host
computer that consists of the electrical signals and the firmware, which