4-18 
4.8 Pump part replacement 
 
4.8.1  Pump Unit Replacement Procedure 
1 Perform “Ink drainage” to “Pressure relief”. 
 
2 Turn off the power supply. 
 
3  Perform  “4.1.3  Access  to the parts on the rear side of the equipment”,  “(1) Access 
method from the front” and open the unit door. 
   [Caution] Be careful not to catch the tubes. 
 
 
4 Remove the wire harness from the clamps (5 positions).  
 
 
 
 
 
 
 
 
 
 
 
 
 
5 Disengage the connectors of the electrical parts (6 positions) (pressure sensor,   
viscometer (3 positions), level sensor and float sensor). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5 positions 
1 position