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TS3400 Tape Library Maintenance Information
Accessor
Figure 2-12. Accessor assembly
The Accessor assembly ( in Figure 2-12) contains the library robotic system and the
tape cartridge bar code reader. The Accessor moves cartridges between:
• I/O Station
• Storage slots
• Tape drives
The Accessor moves back and forth along an X-axis rail using a rack and pinion gear
driven by the X-axis motor. The Accessor moves the Picker ( in Figure 2-12) unit up
and down along the Y-axis using a belt driven by the Y-axis motor. The Picker is
guided by two vertical guide shafts, and its tilt is controlled using three sets of rack
and pinion gearing with synchronized rotation.
The Picker ( in Figure 2-12) rotates or swivels on a swivel plate assembly using a
combination of swivel motor and gears. The Picker has a finger that enables it to grab
tape cartridges and move them to and from the I/O Station, storage slots, and drives.
The Bar Code Reader ( in Figure 2-12) is an integral part of the library Accessor. The
Bar Code Reader reads each cartridge bar code label and the fiducial labels that
identify the types of cartridge magazines and tape drives installed in the library and
provides inventory feedback to the host application, Operator Panel, and Web User
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