2-13 
  2.3.4 Auto phase gain adjustment 
 ● The gain of the auto phase detection voltage is automatically adjusted. 
 ● Perform this adjustment after confirmation that the periphery of a gutter part within the nozzle   
          head is not made dirty with ink or the like and the printing head cover is correctly fixed. 
 ● Be sure to perform this adjustment in the case of replacing the boards (EZJ125, 128, 133, 134) , 
the nozzle (including the print head) or changing the ink type.   
 ● Perform this adjustment before “Excitation voltage setting”. After setting the optimum   
          excitation voltage, repeat this adjustment. 
 ● This adjustment is performed when the IJ printer is in “Drop adjust” or “Standby” state. 
 
  1 Press Adjustment/operational checkout on the maintenance menu. 
If  Adjustment/operational  checkout  is  not  displayed  on  the  maintenance  menu,  set  the 
service personnel maintenance mode on the login user selection screen. 
 
 
 
 
   The adjustment/operational checkout menu is then displayed. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  2 Press Auto-phase gain adjustment.   
   The auto-phase gain adjustment screen then appears. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
For information on changing to the service personnel maintenance mode, refer 
to “2.1 Setting of service personnel maintenance mode.”