18
Failed BiT 1 – Bumpers
Roomba Symptom: Roomba may back up and circle
with no error code.
BiT REPAIR STEPS
Æ Clean area where bumper arms meet the IR sensor
housing on pcb with compressed air. If test still fails
remove arms (see Appendix M) and wipe sensors in
housing with alcohol.
Æ Make sure the front caster is properly inserted and
that the connectors are secure.
Æ Inspect the bumper springs and ensure they spring
back and that there are no wires or obstructions as
they compress.
Æ Check for broken bumper arms.
Main PCB
REPLACEMENT PART
Inner Bumper Module
QC
o When reattaching the outer bumper verify that
wires are not being pinched and that the springs
are free to compress.
o Ensure BiT passes.
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