Orion STARBLAST 6/6I Manual page 9

Figure 10. Installing the encoder connector board. There is
a washer on each screw, between the encoder board and the
side panel.
13. To attach the altitude encoder board and altitude encoder
disk, you must first remove the telescope mounting
bracket. Rotate the altitude axis tensioning knob
counterclockwise and remove it completely. You'll see
two flat washers and a ball bearing ring remaining on the
mounting bracket's shaft. To remove them you have to
rotate the outer washer counterclockwise to "unthread"
it from the bolt shaft, then slide the ball bearing ring and
inside washer off of the shaft. Now remove the telescope
mounting bracket from the side panel.
14. Insert the compression spring into the hole just below the
hole for the altitude axis bolt on the inside surface of the
side panel. When inserted as far as it will go, the spring
will still protrude from the hole by several millimeters
(Figure 11).
15. Now you will install the altitude encoder board. Place
two wood screws through the mounting holes in the
board, and then place two washers over the screw tips
as shown in Figure 12a. Thread the screws into the pre-
drilled mounting holes with a Phillips screwdriver until
the board is secured, making sure that the large hole in
the encoder board is aligned with the hole in the side
panel and the board is pressing squarely against the
compression spring that you installed in the previous step
(Figure 12b). 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.
Compression
spring
Figure 11. Insert the compression spring into the small
hole just below the larger hole for the altitude axis bolt.
a
b
Figure 12. (a) Installing the altitude encoder board. Place
a washer on each screw, as shown. (b) The altitude encoder
board installed.
Altitude
encoder board
Washers
Wood screws
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