8
7. How to perform the repair
7.1 How to remove the casing (Pos. 3.12)
■Move the ARTROMOT®-K3 in a position of approximately
110 degrees.
■Turn the power OFF at the ARTROMOT®-K3 and remove
the power adapter.
■Hit the 4 pins of the split rivet (Pos. 3.24) inwards.
■Remove the 2 covering plates (Pos. 3.22)
■Loosen the 2 countersunk screws (Pos. 3.50) and remove
the casing.
■Remove the 4 pins of the split rivet, which are inside the
casing.
■If you have exchanged any of the printed circuit boards
including the knee elec-tronics and the hand held pro-
gramming unit or any parts of the drive technology (Pos.
3.x), you have to perform a reference run. See chapter 7.4
■Finally, a function- and safetytest has to be performed.
7.2 How to exchange the hand-held programming unit
(Pos. 1.2)
■Remove the casing. See chapter 7.1
■Pull out the connector of the hand held programming unit.
Attention: Use your ESD (Electro Static Discharge)-
equipment.
■Put in the connector of the new hand held programming
unit.
■Rebuild the casing.
■Perform a reference run. See chapter 7.4
■Finally, a function- and safetytest has to be performed.
7.3 How to exchange the motor electronics
(Pos. 1.3 and 1.6)
■Remove the casing. See chapter 7.1
■Pull out the required cables at the printed circuit board
(Pos. 1.6)
Attention: Use your ESD (Electro Static Discharge)-
equipment.
■Exchange the defect printed circuit board.
■Put in the cables at the same position. (Pay attention to
the code)
■Rebuild the casing.
■Perform a refernce run. See chapter 7.4
■Finally, a function- and safetytest has to be performed.
7.4 How to perform a reference run.
(Reference run connector: 0.0031.007)
■Move the ARTROMOT®-K3 in a position of approximately
10 degrees.
■Turn the power OFF at the ARTROMOT®-K3.
■Adjust a maximum femur length.
■Open the housing of the hand-held programming unit
vis-à-vis to the spiral cable side. At the printed circuit
board is an unused socket. Insert the reference run
connector at this socket. (Pay attention to the code)
■Turn the power ON at the ARTROMOT®-K3.
■The display shows „REFERENCE RUN"
■Press „START"
■After about 2 minutes, when the ARTROMOT®-K3
reached both points of changing direction, (first minimum
at EXTENSION = -5 degrees afterwards maximum at
FLEXION = 127 degrees) the ARTROMOT®-K3 will stop at
EXTENSION / FLEXION = 110 degrees.
Attention: It is important to push or pull at the femur
bow so that in direction Flexion the ARTROMOT®-K3
reach the mechanical stud. (approximately 3 cm in front of
the right/left cover). (Pos. 2.8/2.9)
■Pull out the reference run connector.
■Turn the power OFF at the ARTROMOT®-K3 and close
the housing of the hand-held programming unit.
■Finally, a function- and safetytest has to be performed.
