Hitachi UX Twin Nozzle - Faults - Print-Stop Type

6-47
6.3 Faults – Print-stop type
6.3.1a (N1) Ink Drop Charge Too High
(N1) 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 of nozzle1 hole
with it?
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; 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 supply1 high
voltage output FASTON terminal
disconnected?
Replace the high-voltage
power supply1.*5
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 EZJ133 board.*2
2.
Replace the print head.*4
If the problem is
not fixed:
No
No
Yes
Yes
Replace the EZJ125 board.*1
If the problem is
not fixed:
Replace the EZJ135 board.*3
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
Is the gutter of nozzle1
section soiled?
(*1): When you replace EZJ125 board,
refer to [Replacement procedures
of EZJ125 board] in “3.3.5
EZJ125 board (Nozzle1 drive
board)”.
(*2): When you replace EZJ133 board,
refer to [Replacement procedures
of EZJ133 board] in “3.3.1
EZJ133 board (MPU board)”.
(*3): When you replace EZJ135 board,
refer to “5.7 APH board
(EZJ135) replacement”.
(*4): When you replace the printhead,
refer to “4.13 Print Head
Replacement Procedure”.
(*5): When you replace High voltage
power supply 1, refer to
[Replacement procedures of high
voltage power supply] in “3.3.16
High Voltage Power Supply 1 and
2”.
[Caution]
Be sure to check that there is no
wrong connection of harnesses by
referring to [Connector numbers and
Identifying method of harnesses] in
“3.3.20 Electrical Connection
Diagram”.