From Aibo To You; Lights - Sony AIBO Life Handbuch

From AIBO to you

AIBO expresses its emotions, desires and present condition to you through its
lights, sounds and gestures.

Lights

Mode indicator (located behind the horn)
The mode indicator indicates the current mode or condition of AIBO.
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Mode indicator
Off
Autonomous mode
Station mode
On
Rest mode
Pick-up condition
Flashing
Jam condition