Replace BObi Pet's Dock Sensor

If bObi Pet is having trouble finding her charging station in a wide open space, even after synchronizing the two, you may benefit form a dock sensor replacement.

Changing the dock sensor involves a few more steps than most of bObi Pet's repairs, including removal of the bumper to access the sensor. You will need a Phillips head screwdriver, a new sensor, and a new cover circuit board to complete this repair yourself.

Step 1: Turn BObi Pet Off

Before we get started, turn bObi Pet OFF and flip her over onto a flat surface.

Next, remove the dustbin. Grip the button on the back of the bin and pull to remove.

Step 2: Remove the Front Wheel

Then, remove bObi Pet’s front wheel. Grip the wheel with your hand and pull straight up, using the screwdriver for leverage.

Behind the wheel are two screws. Use the screwdriver to remove the larger screw set deeper in the wheel compartment.

Keep the wheel, its screw, and all other screws removed from bObi Pet for later reassembly.

Step 3: Remove the Dustbin Holders

For the next step, remove the screws on both sides of the dustbin.

Then, remove the corner pieces that were held down by the screws.

Grip the brush compartment and pull down to reveal two screws on a red fastener. Remove them with the screwdriver.

Pull the brush compartment up until it is freed from the red fastener. Then, detach the brush compartment and set it aside.

Step 4: Remove the Cover Screws

Remove the 4 screws located beneath the brush compartment.

Next, remove the 2 screws on the dustbin’s red fastener.

Remove the fastener and set it aside for reassembly.

bObi Pet's cover is no longer secured, so carefully flip her over onto her wheels.

Step 5: Disconnect the Cover

Lift the cover to reveal the main board underneath. Remove the two circuit plugs connecting the lid to the mainboard.

Now you're ready to start the dock sensor replacement.

Step 6: Remove the Circuit Plugs

Flip bObi Pet’s cover over onto a flat surface so that you see 2 green circuit boards positioned at the top.

There are 8 circuit plugs that you will need to remove. Leave the smallest circuit plug at the top in place for now.

If there is any glue holding down the other wires, you may scrape it off using a tool such as a screwdriver.

Step 7: Remove the Wire's Hook (Optional Step)

Remove the hook holding the yellow circuit plug against the lid. Keep the small hook and all screws safely aside for later reassembly.

Depending on your model, bObi Pet may have one of two hooks holding the yellow wire. In this case, remove and keep both aside for reassembly.

This step makes it easier to move the bumper aside. However, you may leave the yellow-wired circuit plug attached to bObi Pet as long as it is not attached to the cover's circuit board.

Step 8: Remove the Bumper Screws

Next, remove the 4 screws connecting the bumper to bObi Pet’s lid. (Highlighted Blue)

You may nudge 2 of the oblong wall sensors out of their spot on bObi Pet to make room for your screwdriver. Be sure to replace them when done.

Step 9: Remove the Bumper

On the left and right sides of the bumper are bObi Pet’s sensor strips. They connect to the circuit board by red and white wires.

The sensor strips may be glued to the inside of the cover. Use a tool like a screwdriver to break off the glue.

Then, lift the whole bumper up and out.

Step 10: Remove the Dock Sensor

Remove the dock sensor from the circuit board. Grip the small white tab on the side and pull up.

Remove the 3 screws from the circuit board on bObi Pet's cover.

Then lift the circuit board up.

Step 11: Place a New Dock Sensor

Lift bObi Pet slightly as you place the new circuit board. Make sure it lines up with the three screw posts inside bObi Pet.

Then install the 3 screws.

Step 12: Attach the Dock Sensor

Attach the new dock sensor to the circuit board.

Then, lay the bulb end down in the small space on bObi Pet's cover. (Highlighted Blue)

Next, line up the bumper up with the screw posts on the lid.

Step 13: Align the Bumper

As you lay the bumper back on bObi Pet, make sure the sensor strips slide in behind the screw posts on both ends of the bumper.

Step 14: Secure the Bumper

Once the bumper is positioned securely on the lid, reinstall the 4 screws around the inside of the bumper.

Once again, you may nudge 2 of the oblong wall sensors out to allow room for your screwdriver and then replace them when done.

Step 15: Start Reconnecting the Circuit Plugs

Next, you’ll need to replace the plastic hook removed previously. Place the yellow wire through it, and line the hook up with the screw post on the cover.

When aligned, install the screw on the hook. Then, attach the thick yellow wire to the lower edge of the circuit board.

Continue reconnecting all circuit plugs. In the middle of bObi Pet’s bumper is a circuit plug for one of the 5 wall sensors. Plug this one in at the topmost spot.

Step 16: Connect All Circuit Plugs

The rows on each side of the cover circuit board follow the same pattern for installation.

The left side of the circuit board has 3 spaces:

The top space corresponds to the wall sensor with the shortest wire and no tab on the circuit plug.

Just below that is where the leftmost wall sensor plugs in. It has a longer wire and a small white tab on its circuit plug.

The space on the very bottom is for bObi Pet’s sensor strips. They have red and white wires.

All circuit plugs should be attached correctly and there should be no open spaces in the cover's circuit board.

Step 17: Double Check Wiring

Repeat the previous process for the circuit plugs on the right and double check that all connections are secure.

Make sure the the red and white wires are tucked behind the screw posts at the ends of the bumper.

Make sure all the wires are tucked behind the black hooks lining the inside of the bumper before closing bObi Pet. (Highlighted Yellow)

Step 18: Connect the Cover

Attach the two circuit plugs from bObi Pet's cover back onto her main board.

The yellow-wired plug connects to the right side of the mainboard. (Highlighted Yellow)

The white-wired plug on bObi Pet’s lid connects to the middle of the mainboard. (Highlighted White)

Lay down bObi Pet's cover and line up the edges precisely.

While holding bObi Pet's top and bottom together, carefully flip her over onto a flat surface.

Step 19: Replace the Front Wheel

Reinstall the front wheel’s screw.

Then, place the front wheel on top and firmly push down to secure it.

Step 20: Secure BObi Pet's Cover

Replace the dustbin’s red fastener and install its two screws.

Install the four larger screws in the space beneath the brush compartment.

Step 21: Replace the Main Brushes

Plug in the brush compartment.

Then, replace its red brush fastener and install the two screws.

Step 22: Replace the Dustbin

Position the brush compartment back in its original place on bObi Pet.

Now reinsert the corner pieces on both sides of the dustbin, with the arms of the brush attachment linked.

Ensure the rubber strip near bObi Pet's dustbin is not stuck underneath the brush compartment. Then, reinstall the two screws in each of the corner pieces.

Make sure the bin can slide in easily before your next use and you've completed bObi Pet's dock sensor replacement.

Congratulations and happy cleaning!