3-3
(Continued)
4. Tighten the locking nuts:
a. Rotate the Tubehead to its maximum position (until it stops).
b. Locate the first hex locking nut, and tighten it with the 4.5 mm hex
wrench.
Figure 3-2 Two of the Four Hex Locking Nuts
c. Rotate the Tubehead until you see the next hex locking nut. Tighten
the nut.
d. Repeat step c. for the remaining two hex nuts.
Note! Tighten all four hex nuts equally, to apply adequate friction to prevent
drifting.
5. Reposition the cover plate and snap it into place. Screw in the two
screws that secure the cover plate.
6. Restore power to the equipment:
– FOR A SYSTEM WITH A LINE CORD (120 V ac only), plug in the
line cord.
– FOR A HARD-WIRED SYSTEM, reconnect the mains supply
(external power source) and use a meter to verify the mains supply is
connected properly.
7. Turn ON the power switch.
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