Orion SkyQuest XX12 Intelliscope Truss Tube Dobsonian 9793 Instruction Manual page 9

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Altitude bearing
cylinder screw
Figure 9.
Push a bearing cylinder through the side panel and
thread it into the altitude bearing cylinder. The beveled end of the
cylinder should be facing away from the side panel.
Left
panel
Azimuth encoder jack
Figure 10.
Attach the encoder connector board to the left panel
with four of the encoder board mounting screws.
board and into the pre-drilled pilot holes in the left panel
until tight (Figure 10).
16. The altitude encoder assembly and its mounting hard-
ware can be found in the box with the IntelliScope Object
Locator kit. The altitude encoder assembly is installed onto
the base's right side panel. Below the 5/8" through hole in
the right panel, there are two predrilled starter holes in
the inward-facing surface. Take two of the encoder wood
screws supplied in the IntelliScope kit and push them
through the two slotted holes in the bottom of the altitude
encoder's board. The screw heads should be on the same
side as the altitude encoder's modular jack. Now, place an
altitude encoder nylon spacer washer on the end of each
screw (Figure 11).
17. Thread the encoder wood screws into the starter holes
in the right side panel with a Phillips screwdriver (Figure
11). The shaft on the altitude encoder assembly should
protrude through the 5/8" through-hole in the right panel.
It will take a bit of dexterity to keep the nylon spacer wash-
ers on the ends of the screws when installing, so don't
Altitude
bearing
cylinder
Encoder wood
screws (4x)
Altitude
encoder
jack
Right panel
Altitude
encoder
assembly
Encoder
mounting screw
Figure 11.
To install the altitude encoder assembly onto
the interior surface of the right panel, insert two encoder board
mounting screws through the slotted holes in the board. Then, add
an altitude encoder spacer nylon washer onto each screw. Now,
insert the shaft of the altitude encoder through the hole in the right
side panel, and thread the screws into the two pilot holes using a
Phillips head screwdriver.
Encoder
wood screw
Figure 12.
Install the bumper into the pilot hole above the
altitude encoder assembly using one of the encoder wood screws.
get frustrated if it takes a couple tries. The screws should
not be fully tightened; they should be tight, but not tight
enough to prevent the altitude encoder from moving up
and down within the slots in the encoder board.
Note: The right panel does not have a white nylon bushing
pressed into its 5/8" through hole like the left panel does. This
is an intended design.
18. There is a pilot hole above the altitude encoder assembly;
this is where the plastic bumper (found in the IntelliScope
kit) which protects the altitude encoder assembly will be
installed. Take the remaining encoder wood screw from
the IntelliScope kit, push it through the bumper, and use a
Phillips screwdriver to thread it into the pilot hole until tight
(Figure 12).
Altitude encoder
spacer nylon
washer
Bumper
Altitude
encoder
assembly
9

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