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Removing and replacing the MLC 64 VCM module knob and
faceplate
The MLC 64 is provided with one black and one white VCM faceplate and volume control
knob. You can change the faceplate, knob, or both on the volume control module as
described in the following procedures.
Replacing the MLC 64 volume control knob
NOTE: It is not necessary to remove the faceplate or the board from the wallplate
in order to replace the knob.
1. Rotate the knob to its lowest setting (the dot on the knob should be aligned with the
bottom edge of the volume icon on the faceplate) to line up the notch in the edge
of the knob with the notch in the edge of the hole in the faceplate, enabling you to
access the hex screw on the knob.
2. Insert the small Allen wrench (provided) into the opening created by the two notches,
until it stops.
3. Give the Allen wrench a one-half turn counterclockwise to loosen the hex screw
holding the knob.
MUTE
VOLUME
Turn Knob to
Expose Screw
Use Allen Wrench
to Loosen Screw
Figure 16. Removing the Volume Knob
4. Lift off the knob.
5. Press the new knob onto the spindle of the VCM, making sure that the spindle is
turned all the way to the left and that the dot on the knob is aligned with the bottom
edge of the volume icon on the faceplate.
6. Tighten the hex nut by inserting the Allen wrench and giving it one-half turn
clockwise.
Replacing the MLC 64 volume control module faceplate
To change the faceplate on the MLC 64 volume control module, you must remove the
volume control module from the wallplate.
1. Remove the volume control knob from the faceplate (see “Replacing the MLC 64
volume control knob,” steps 1 through 4, above).
2. At the center top and bottom of the faceplate are tabs, which insert into slots on the
VCM module board and hold its faceplate in place. For each tab:
a. Insert the at end of the provided Extron Tweeker or other small screwdriver into
the hole above or below the tab (see the illustration on the next page).
b. Pressing each tab in and up, pry the top and bottom of the faceplate away from
the board.
MLC 60 Series MediaLink Controllers • Features, Installation, and Operation 19