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81
Step Three: Touch and Bumper Sensors
To move on to this test, press the button on Bob’s cover twice. Bob’s screen will
go blank.
Press on the left side of Bob’s bumper and the battery bars should light up on his
screen; press on the right side and the word ERROR should light up. If you press the
center of the bumper, both the battery bars and ERROR should appear at the same
time. If either icon fails to light up, it is likely that Bob needs a new bumper.
AUTO
SPOT
DIRTYERROR
UV
TIME
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