Hitachi IJ UX, Service Manual, Page: 247 / 308

6-29
6.3 Faults – Print-stop type
6.3.1 Ink Drop Charge Too High
Ink Drop Charge
Too High
Resume the
operation.
Does the IJ printer
become ready for
printing when you
initiate ink ejection
and start it?
Yes
No
Yes
Yes
No
No
No
Yes
Is the ink
recovered without
filling the gutter
hole with it?
Is the gutter
section soiled?
Clean the gutter section and its surrounding
area with a cleaning solution. (When using
carbon type ink, remove the deflection plate,
charge plate and gutter, then clean the
mounting base surface as mentioned on
“Handling guidance of each ink; item 6, Print
head cleaning”.
Is the ink drop
shape good?
Change the excitation
voltage setting to assure
proper ink drop shape.
Refer to “6.5.18 No ink
suction from gutter”.
No
Eliminate the cause of
vibration or shock.
Does the IJ printer become ready
for printing when you eject ink
and start the IJ printer with the
high voltage power supply unit
high voltage output FASTON
terminal disconnected?
Replace the high-voltage
power supply unit.
Has the ink/makeup entered inside
the print head rear cover?
(See the section on print head
operation and replacement.)
Wipe the entered
ink/makeup away with
JK wiper and allow the
print head rear surface to
thoroughly dry.
Replace the EZJ126 board.
Replace the print head.
If the problem is
not fixed:
No
No
Yes
Yes
Replace the EZJ125 board.
If the problem is
not fixed:
Replace the EZJ112 board.
If the problem is
not fixed:
Is any vibration or shock applied
to the IJ printer, print head, or
print head cable during operation
or startup?
Yes