Hitachi IJ UX, Service Manual, Page: 26 / 308

2-6
3 Press Automatic adjustment.
During automatic adjustment, “in progress” is displayed as the processing status.
The excitation voltage is automatically adjusted inside the IJ printer.
The excitation voltage is gradually increased, and the adjustment is completed
at 360 V ± 20V p-p. (Excitation adjustment is automatically completed within 90 seconds.)
4 When completed, the processing status is displayed to be “Ended”.
5 If automatic adjustment fails, the Manual adjustment key is displayed.
Main causes of automatic adjustment failure
№
Cause
1
The connection of the EZJ126 board and EZJ125 board is insufficient.
2
The dip switch on the EZJ125 board is incorrectly set.
3
The connection of the coaxial cable connector for excitation (EZJ125 CN5) is
insufficient.
4
Replacement parts are out of order (EZJ126/EZJ125 board, nozzle, head
cable).
Proc. status: In progress
Proc. status: Ended
Adjust./oper. checkout
<Excitation adjustment>
0752
Excitation voltage value (0-2047)
Proc. status: Failed
[Stop ] 2015.07.07 12:45 Com=0
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Automatic
adjustment
Manual
adjustment
Manual adjustment