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Identify the green Assembly Template. It has the part number TD-UCSE-D-AT printed on it.
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Note the orientation of the board. The standoffs will be installed on the side that has THIS SIDE FACES DOWN printed on it.
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Locate two M2.5 × 10 mm female standoffs.
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Secure each standoff using one M2.5 × 6 mm pan head machine screw in each of the two locations shown.
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Flip over the completed Assembly Template. It is now ready to be used.
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Identify the bare Control Board PCB. It has part number TD-UCSE-D-CB printed on its bottom side.
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For ease of access to the solder pads, place and solder the four through-hole components H1-4 before continuing this process.
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Place the spacer onto switch component S1.
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Place the combined spacer and switch onto the Control Board.
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Place the four spacer components DS1-4 onto LED components D1-4.
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Place the four combined spacers and LEDs onto the Control Board.
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Place all of the remaining components onto the Control Board:
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Place the twelve jack components J1-12.
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Place the two button components S2 and S3.
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Place the six potentiometer components P1-2 and P4-7.
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Place the dual-gang potentiometer component P3.
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Locate the white plastic Assembly Spacer part.
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Position the Assembly Spacer above the nine components P1-7 and S2-3 and slide it down onto them.
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The Assembly Spacer should rest on top of the nine components with no gaps. All nine component shafts should be extending upwards through the Assembly Spacer as shown.
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Position the prepared Assembly Template above the Control Board as shown.
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Gently slide the Assembly Template down over all the loose components and the Assembly Spacer.
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Verify that all components are seated correctly and are sticking out through the top surface of the Assembly Template as shown.
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Grip the pair of boards and flip them over while applying slight pressure, holding them together so that none of the components become unseated.
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Locate and fasten two M2.5 × 6 mm pan head machine screws to secure the Assembly Template to the Control Board, sandwiching all of the loose components and the Assembly Spacer solidly in-between them.
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Locate the white plastic Assembly Cap part.
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Position the Assembly Cap above the eleven components P1-7 and D1-4 and slide it down onto them.
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The Assembly Cap should rest flush up against the Assembly Template with no gaps between them.
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Now solder all of the loose through-hole components in place. There are a total of 26 components with 92 solder joints.
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Separate the Control Board from the Assembly Cap by applying gentle pressure.
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Put the Assembly Cap aside for use on the next iteration.
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Remove the two M2.5 × 6 mm pan head machine screws from the Control Board side of the assembly and put them aside for the next iteration.
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Gently lift the Control Board away from the Assembly Template and the Assembly Spacer. They should both slide off easily without applying much force.
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Inspect the Control Board assembly and verify that all of the following statements are true:
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There are no gaps between the plastic bases of components J1-12 and the top surface of the Control Board.
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The shafts of components P1-7 and S2-3 rise perpendicularly (at a 90º angle) compared to the top surface of the Control Board.
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The spacer beneath component S1 is seated flush against the top surface of the Control Board.
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This completes the process.
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Almost done!
Finish Line