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4.  Unscrew the two M3×6 screws to take out the ECG shield. 
 
 
 
 
 
NOTE 
z  Release the clamps before unplugging the cables. 
z  Make sure all the connectors have been removed before taking out the 
multi-parameter board. Take out the board carefully to avoid damage. 
z  When reinstalling the ECG shield, place it according to the positioning slot to avoid 
the short circuit between the shield and other components. 
z  Set the jumper as follows. S5 is OFF for CO2 and ON for AG.