Service manual
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MAC Aura XB - Revision A, 05-15-2017
Figure 35: Replacing pan positioning sensor
Figure 36: Yoke/head connection
Figure 37: Yoke
Replacing the pan positioning sensor PCB
1. Remove the yoke cover. See “Removing the yoke
cover” on page 17.
2.
Remove the two TX10 screws (1).
3.
Remove the pan positioning sensor PCB (2).
4. To install a new pan positioning sensor PCB,
follow the procedure in reverse order.
1
2
Replacing the yoke bracket
1. Remove the base covers. See “Replacing the
base fan” on page 21.
2. Remove the yoke covers. See “Removing the
yoke cover” on page 17.
3. Disconnect PL1, PL2 and PL22 from the
mainboard and drag them all the way back
through the yoke shaft. See fi gure 8
.
4. Disconnect the connectors on the thermo switch
and drag them all the way back through the yoke
shaft. See fi
gure 17.
5. Remove all wires from the two motors and the
four sensors.
6.
Cut all cable ties on the wires.
7.
Loosen the two M4 nuts (1) that secure the belt
tensioner.
8. Remove the TX20 screw (2) that fastens the
ground wire.
9.
Remove the four countersunk TX20 (3) that hold
the head to the yoke bracket to be able to remove
the head assembly.
10. Remove the head assembly away from the yoke
and base.
11.
Remove the pan belt tensioner (4) and the belt
(5).
12.
Remove the pan shaft wire guide (6) which is
mounted on the timing wheel (7).
13. Remove all the parts attached to the yoke bracket,
such as pan motor, tilt motor, belt tensioners,
rubber grommets and the two sensors.
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