Hitachi UX Twin Nozzle - Page 269

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6.2.13b (N2)No Ink Drop Charge
(N2)No Ink Drop Charge
Is the nozzle2 clogged
or the ink stream bent?
Is the EZJ134 CN1, CN2, CN3, CN4, CN6 or
CN7 connector, or high-voltage power supply2
CN1 or CN2 connector disconnected?
Connect the connector.
Yes
No
Yes
No
END
Is the problem
fixed?
No
Yes
Replace the high-
voltage power supply2.
Is the ink stream
being ejected from
the nozzle2?
Refer to “6.5.8b No ink
ejection from nozzle2.”
Refer to “6.2.5b (N2)Ink
Drop Charge Too Low”.
Yes
No
END
Is the problem
fixed?
No
Yes
Replace the EZJ134 board*1.
Replace the print head. *4
END
Is the problem
fixed?
No
Yes
Replace the EZJ133 board.*2
Is the gutter section
soiled?
No
Refer to “6.2.5 b (N2) Ink
Drop Charge Too Low”.
Yes
END
Is the problem
fixed?
No
Yes
Replace the EZJ135 board.*3
Is the ink recovered without
filling the gutter hole with it?
Refer to “6.5.18 No ink
suction from gutter”.
Yes
No
(*1): When you replace EZJ134 board, refer to
[Replacement procedures of EZJ134 board] in
“3.3.6 EZJ134 board (Nozzle2 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”.
[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”.