Siemens ACUSON Cypress Operator's Manual page 280

Maintenance, Care, and Service
11-10
Place your hand over the Trackball and lift the keyboard until the Trackball
3.
falls into your hand.
Clean the ball with the lint-free cloth by rubbing it carefully. Remove any oil or
4.
dust and set the ball aside until it is time to re-assemble the device. Do NOT
use alcohol, soap, or any other cleaning material on the ball.
BALL
BEARINGS
(THREE)
Blow carefully into the ball-cage to dislodge dust and lint that may have
5.
accumulated on the surface or on the lens.
Dip the lint-free swab in alcohol. Use the alcohol sparingly; it should not sat-
6.
urate the swab. If necessary, reduce the amount of alcohol on the swab by
applying it to the lint-free cloth or by squeezing the swab tip with tweezers.
You may use any method for reducing the amount of alcohol on the swab as
long as the swab and alcohol are not contaminated.
Once the proper amount of alcohol is on the swab, lightly rub the swab on
7.
the inside surface of the ball-cage to remove any contaminants. Look for a
build-up of dirt on the ball bearings. Inspect the surface for cleanliness as
you go. After cleaning, be sure that fluff from the swab is not left on the sur-
face of the ball-cage or optical lens.
When all areas have dried completely, replace the previously cleaned ball.
8.
Replace the retaining ring.
9.
ACUSON Cypress™ Operator's Manual
OPTICAL LENS
ONCE THE BALL IS
REMOVED, CAREFULLY
CLEAN THE
FOLLOWING:
THE INSIDE SURFACE
BALL BEARINGS (3)
LENS