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Replacing Edge Sensors - Bob PetHair Plus

To replace Bob's edge sensors, you’ll need a Phillips head screwdriver, a flat head screwdriver, and a new set of edge sensors.

Before starting any repair on Bob, turn his side power switch OFF.

Then, remove his dustbin.

Flip Bob over onto a flat surface and remove his main brush using the flat head screwdriver. Save all screws and parts for later reassembly.

Use a Phillips head screwdriver to remove the 6 screws on Bob's underside that hold him together.

Hold Bob's top and bottom together as you flip him onto his wheels. Grip Bob's cover from the back and lift up to expose his mainboard.

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

To detach Bob's cover completely, disconnect 4 circuit plugs:

  • 2 at the bottom of the mainboard
    • 1 on the far left
    • 1 with a thick white wire

  • 2 at the top of the mainboard
    • Disconnect the 2 center plugs

Bob's cover is now completely detached and can be set aside for the rest of the repair.

There are 4 edge sensors on Bob’s underside, along his front. 2 screws hold each sensor in place. Remove all 8 screws and save them for later reassembly.

Feed the wiring for the 2 outermost sensors out from under the mainboard, toward Bob’s front wheel.

Do not remove the black sensor covers. If a cover moves out of place, simply place it back in the appropriate spot.

Next, disconnect the sensors from the mainboard.

Plug the new edge sensors into the top of the mainboard. Feed the wires for the 2 outermost sensors underneath the mainboard and replace them with the green side facing up.

Replace the 2 screws on each sensor.

Once all the sensors are secured, you’re ready to close Bob’s cover.

Reattach all 4 circuit plugs connecting Bob's cover to the mainboard:

  • 2 at the top of the mainboard

  • 2 at the bottom of the mainboard

Remember to slide the power inlet back into its space on Bob's cover.

Align the cover’s edges precisely. Ensure that no wires are compressed in the main brush compartment or visible at the edges of the bumper. If so, take a step back and lift the cover to tuck the wires into the appropriate spaces inside Bob.

Then, flip Bob over onto a flat surface. Replace all 6 screws previously removed from Bob's underside.

Replace the main brush and dustbin before your next use and Bob is completely reassembled!

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