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Final Assembly

Motherboard Assembly

  • Plug the peel-motor-asm and drive-motor to their respective pins.

  • Press drive-motor into its cavity while ensuring it is flush with the back of feeder-frame. This helps drive-motor stay stable as we place the board into the frame.

  • Twist feeder-mobo once to help guide wires into their cavity.

  • Slide the peel-motor-asm into its corresponding cavity in the feeder-frame.

    • Tuck the excess cable into the empty region behind the peel-motor-asm.

  • Press the PCB flat into feeder-frame.

    • Make sure the cable is not caught between them - it should lay flush.

  • Insert 4x M3x12mm flathead screws into the holes in the PCB as shown below.

    • Use the torque driver with power set to 3.

QC Check - Test if the buttons on feeder-frame can easily click the switches on the PCB before proceeding

  1. Install a drive-motor-bracket

  2. Insert 2x M3x12mm flathead screws

    • Turn the screws in equal amounts before tightening them both to the final torque spec
    • Tighten the 2x M3x12mm flathead screws to 55 cN.m (5.5 N.m) with a 2mm hex head driver

    DO NOT OVER-TIGHTEN

    Over-tightening can lead to bracket damage and motor skewing in the feeder-frame-8mm

  3. Check that the drive-motor is still flush and hasn't skewed because of tightening

    • If it appears crooked or not flush, loosen the screws and readjust the drive-motor

Install the release-lever

Wearing safety glasses is required while installing springs

  1. Install the spring

    • Grab a spring and a release-lever, and hold the spring in the release-lever as shown
    • Match the other end of the spring up with the circular cutout in the feeder-frame-8mm print
    • Finally, drop the release-lever into the feeder-frame-8mm

  2. Insert an M3x15mm flathead screw from the backside and drive it in using the torque driver on the 6 setting.

    • Make sure the arm can still swivel easily. It should snap back smoothly.
    • Make sure that the arm does not have any lateral movement.

    If there is lateral movement, try using a 2.0mm screwdriver to manually drive the screw to the end point of the release-lever. Once you've screwed about as far it can be screwed, loosen it a bit, and test the lever for: a clean swivel, the snap back, and lateral movement again.

Install the peel-gear-box

  1. Obtain peel-gear-box.

  2. Place peel-gear-box in place, engaging with the worm-gear in peel-motor-asm.

  3. Insert 2x M3x12mm flathead screws into the locations shown using the torque driver set to 3.

Install the drive-wheel-asm

Note on drive-motor shaft angle

Drive-motor units may come from factory with a shaft rotated at an angle that's not ideal for set-screw tightening. If this applies to the feeder you are handling, follow the steps below:

  • Power up to the affected units by plugging it into Gundam jig at the desk.

  • Press the feeder's jog-forward button until the shaft is at an optimal angle for subsequent assembly work

Hold it Partner

  • Note what sounds the motor make. Does it click? Does it sounds smooth? Is it quiet then loud? It's important to note for when you QC the wheel placement.

  1. Place the Drive Wheel Shims in the drive-wheel-asm cavity as shown, with the drive-motor shaft sticking through it

  2. Drop the drive-wheel-asm onto the drive-motor shaft

  3. With one hand, press down firmly on drive-wheel-asm while using your free hand to tighten the shaft-collar-asm set-screw

    • Tighten the M2.5x3mm-set-screw to 30 cN.m (0.3 N.m) with a 1.27mm or 1.3mm hex head driver

  4. Remove the Drive Wheel Shims

Hold it Partner

  • Make sure to QC the wheel before moving on to the drive-motor-cover. Place the feeder with the set wheel back onto the gundam jig, hold the forward button, and listen/look for friction from the wheel as it cycles.

  • Remember that the drive motors can also make strange sounds from its own gears. Note what sounds come from the motor.

  • The wheel will visible slow down if it is experencing friction. You'll have to re-adjust.

  • If the wheel is moving too diagonally, you'll have to re-adjust.

  • This part does take some extra time and can be tricky to get right. Take your time, go slow to start, and do what you can.

Install drive-motor-cover

  1. Place a drive-motor-cover over the drive-wheel-asm

    • The drive-motor-cover should lay flat with none of the cables preventing it from being flush against feeder-frame-8mm

  2. Insert 3x M3x12mm flathead screws in the locations shown below

    • Use automatic screwdriver set to 6

You may now proceed to OQC