This repair guide explains how to replace Roomba 500 Series IR bumper sensor boards. For details on how to first disassemble your Roomba, please see Roomba 500 Series Servicing and Repair Guide Chapter 3: How to Open Up Roomba. Some of the 500 series Roombas are pictured below:
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This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/chapter-13-how-to-replace-roomba-500-series-ir-bumper-sensor-boards