Tektronix Phaser 540 Plus User Manual page 33

2.
Remove the imaging unit from its box and plastic bag, but leave
the protective cover on until immediately before you insert the
unit into the printer.
Caution
The imaging unit is extremely light-sensitive; make sure that it
is not exposed to light for more than 45 seconds or it may
damage the unit. Never expose it to direct sunlight.
Save all packing material in case you need to store the imaging
unit or if you need to return it for repair or replacement.
3.
On the imaging unit, turn the two outer blue knobs clockwise to
align the black triangles. (This tightens the internal belt to ready
the unit for printing.)
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Getting Set Up
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User Manual
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