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Text excerpt from page 4 (click to view)
DISC PULLEY INSTALLING POSITION
Note: The shaft on which the disc pulley is installed has a groove to determine the position (height). Install the disc pulley so that a setscrew can settle in this groove.
disc pulley set screw
disc pulley groove set screw (M2.6 � 4) groove
HOW TO OPEN DISC TRAY WHEN POWER IS OFF
Insert a flat-blade screwdriver into a hole at the bottom of the set, and rotate the pulley in the arrow direction to open the disc tray.