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In case of uneven surface under the chair a safety switch is switched on
to stop the movement of the chair. This condition is indicated by a red
diode on the chair base (Fig. 1). To remedy the colliding condition the
chair feet must be screwed in so that the chair base is closer to the floor.
This will cause the safety switch to turn off and the chair will be switched
to normal operation.
In case that the chair collides with the video colposcope, the safety switch
is switched on to stop the movement of the chair. This condition is
indicated by a red diode on the chair base (Fig. 2). Remove the cause of
the collision. The switch will be turned off and the chair will be switched
to normal operation.