2-5
2.3 Adjustment/operational checkout
2.3.1 Excitation adjustment
● Adjust the drive conditions of nozzles.
● This adjustment is performed in a state other than the IJ printer “ready” state.
● Be sure to perform this adjustment in the case of replacing the board (EZJ125, 128, 133, 134), or
the nozzle (including the print head) or changing the ink type.
In addition, when this adjustment is performed, be sure to carry out “2.3.4 Auto phase gain
adjustment.”
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.
For information on changing to the service personnel maintenance mode, refer
to “2.1 Setting of service personnel maintenance mode.”
When you make adjustment or operation check of EZJ125 board, turn IJP power OFF once, and then
remove EZJ 134 board with fixing bracket attached.
Before the operation check is started, attach Oscilloscope probes in advance to TP12 (Charge signal)
and TP14 (Excitation signal) on EZJ125 board. (Refer to [EZJ125 board external view] in “3.3.5 EZJ125
board (Nozzle1 drive board)” to see the locations of the board and test pins.)
And then, reassemble EZJ134 board with fixing bracket, and turn IJP power ON. (Refer to [Replacement
procedures of EZJ134 board], step (1) to step (4) in “3.3.6 EZJ134 board (Nozzle2 drive board)” when
you remove/reassemble EZJ134 board.)
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