Fujitsu MCE3064SS ユーザーズマニュアル

1 - 8

C156-E097-01EN

(4)

Separate optical sections

The optical head section is separated in such a way that the fixed optics section is separated from
the moving optics section to minimize seek time and positioning error.  (See Subsection 1.2.4 for
the fixed optical section.)  This reduces the weight of the moving parts.

The fixed optical section consists of the laser diodes, collimator lens, and optical detector.

The laser diode for recording and playback, and transmits one laser beam to the actuator section.

(5)

Panel

The central part of the panel is hollowed out deeply to provide pushing finger space for inserting
the cartridge, thereby facilitating the insertion.

The panel is also simply designed by making the eject button and LED light emitting part
integral with each other.

Figure 1.4 is the block diagram of the control circuit section.

The control circuit section is divided into two parts:  an SCSI controller section  which deals
with control between the SCSI interface and drive interface, and a drive circuit section which
controls the drive.

DE

SCSI
Interface

Actuator
   Focus Act.
   Track Act.
   Spindle Motor
Temperature Sensor

Head
   Laser Diode
   Photo Diode
   APC Amp
   LPC Amp
   Head Amp

Drive
   Read Amp
   Power Amp
   Filter
   Sensor
   Motor Driver

Main control
   MPU
   ODC
   DSP
   User Logic
   LSI i/f

D-RAM

F-ROM

Bias Coil
Eject Motor
Cartridge Sensor