
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Mount the new program unit
Mount the new CPU. Make sure that the guide pins (A) are in position.
A
fig.7511
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Connect the cables.
Mount the cover ring and the control knob
Mount the cover ring and rotate it clockwise until it is in position.
Rotate the inner knob until the locking device is pointing downwards.
Insert the screwdriver and press the locking device.
fig.7494
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