original roomba does not respond when the bumper hits anythi

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Re: original roomba does not respond when the bumper hits an

Postby vic7767 » April 29th, 2019, 5:07 pm

jomo wrote:How can I tell if one of them is bad??
You can tell if the IR emitter is working by using a digital camera or cell phone camera and observe a dim blue light when the Roomba is powered on.

It's going to take a little more time to come up with a disassembly procedure. Tied up with other issues.
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Re: original roomba does not respond when the bumper hits an

Postby vic7767 » June 10th, 2019, 8:17 pm

OK, found a solution to at least gain access to the two bump sensors. With screws removed that secured the top you can move it around enough to free it from the Roomba bottom assembly. A 90 degree short bit phillips driver is used to remove phillips head screws that secure the front bumper to the internal black assembly. Remove the bottom front bumper plate. Then remove the 2 inch long brush assembly from the left front of the bottom assembly and then remove the side brush motor and then the side brush motor mount from the right side of the Roomba base. Now there are three circuit board mounts that secure the circuit board. Remove the left and right mounts. Once those two mounts are removed you can press outward away from the Roomba body the two white arms that connect from the bumper into the bump sensor assemblies. Each assembly has an opening that allows the arm to be pressed outward and away from the IR units. Now the center circuit board mount bracket can be removed that secures the board and the deck height string assembly. Now the board can be lifted to access the Bump sensor IREDs and receiver. If one or both IREDs are defective they can be removed and replaced but all connectors on the board will need to be removed. I recommend that one should take some digital pictures of the connectors on the board prior to removal.
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Original Silver with Bump Sensors exposed
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