Replace the Touch Sensors

To replace Junior’s Touch Sensors you’ll need a Phillips head screwdriver, the flat-head screwdriver included in Junior’s box, and a new set of sensors.

Before starting any repair on Junior, turn his side power switch OFF and remove his dustbin.

Then, flip Junior over onto a flat surface and remove his main brush using the flat head screwdriver.

Keep all removed screws and parts safely aside, as they may be needed for later re-assembly. Use a Phillips head screwdriver to remove the 7 screws on Junior’s underside that hold him together.

There are 5 screws along the edges of Junior: One screw on each side of the front wheel.

One screw to the right of the main brush motor. And one screw on each side of the dustbin. The final two screws are in Junior’s brush compartment.

Junior’s cover is no longer secured, so hold the top and bottom together as you carefully flip him back onto his wheels.

Grip Junior’s cover from the back and lift up to expose the mainboard.

Slide the power inlet down and tuck it somewhere safe to avoid compressing its wires.

To detach Junior’s cover completely, disconnect 4 circuit plugs:
Two at the lower edge of the mainboard, near the wheels.
And two more at the top edge, near the bumper.

There are two touch sensors in Junior’s bumper that alert him when he touches obstacles in the course of his work.

Remove the screw on each sensor, and keep them safely aside for the next step.

Then lift each sensor up to remove.

Place your new sensors in the open spaces. The red-wired sensor should be on the left side and the black-wired sensor should be on the right.

Once the sensors sit flat, install one screw on each sensor.

When finished, you’re ready to reconnect Junior’s cover.

Reattach all 4 circuit plugs connecting Junior’s cover to the mainboard.

There are two that connect to the top edge of the mainboard. And two more that connect to the bottom edge.

Remember to slide the power inlet back into its space on Junior’s cover. Align the cover’s edges precisely. Then, flip Junior over onto a flat surface.

Reinstall all 7 screws previously removed from Junior’s underside.

Install the main brush and dustbin before your next use and Junior is completely re-assembled.

Turn the side power switch back on and congratulations! You’ve just replaced Junior’s Touch Sensors. Happy cleaning!

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