GE M
EDICAL
S
YSTEMS
D
IRECTION
FK091075, R
EVISION
04
V
IVID
3N P
RO
/E
XPERT
S
ERVICE
M
ANUAL
Chapter 8 Replacement Procedures
8-41
8-3-7
Rotary Knob (External Keyboard) Replacement Procedure
NOTE:
This section describes the replacement procedure for a parameter adjustment Rotary Knob on the
external keyboard.
8-3-7-1
Tools
Use a small flat
screw driver, as indicated in the rotary knob replacement procedure.
8-3-7-2
Preparation
Shut down the Vivid 3N Pro/Expert ultrasound unit, as described in
Chapter 3 -
Installation
.
8-3-7-3
Rotary Knob Removal Procedure
1) Carefully place a small flat screw driver between the rotary knob you wish to remove and the
surface of the keyboard - see
Figure 8-39 "Keypad Replacement" on page 8-39
.
2) Use the screw driver to gently lever off the defective rotary knob, until it is completely loosened from
its base.
3.) Lift off and remove the defective knob - see
Figure 8-41
below.
4.) Carefully take out the metal tension plate from the centre of the knob (refer to
Figure 8-42 "Tension
Plate Fitted in Centre of Knob" on page 8-42
), before discarding the defective knob.
Do
not
discard
the tension plate
.
Figure 8-41 Rotary Knob Replacement
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