iOptron GEM45 Instruction Manual
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Main board and RA board

1. Remove the two screws and take off the cover
2. Pull out the RA board carefully.
3. Carefully disconnect the wire harness from the
RA board.
4. Remove the screws and then remove the motor
Instruction for GEM45 board replacement
December 10, 2020
Internal Use Only
Ver. 1.1
5. Disconnect the wires from the main board and
remove the main board carefully.
6. Put in a new main board and connect the wires.
7. Put the motor back and install the three screws.
Make sure the belt is properly tightened. If
necessary, adjusted the three screws to make
the belt with proper tension (it can flex about 3
mm when press the middle of the belt).

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Summary of Contents for iOptron GEM45

  • Page 1 Internal Use Only Instruction for GEM45 board replacement Ver. 1.1 December 10, 2020 Main board and RA board 5. Disconnect the wires from the main board and 1. Remove the two screws and take off the cover remove the main board carefully.
  • Page 2 Internal Use Only 8. Put in a new RA board and connect the wires. 2. Remove the three screws and remove the motor. Please pay good attention to the connections between the main board and RA board 3. Do the same as removing the main board, disconnect the wires and remove the DEC board.

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