Hitachi UX Twin Nozzle Service Manual page 268

6.2.13a (N1)No Ink Drop Charge
(N1)No Ink Drop Charge
Is the ink stream
being ejected from
the nozzle1?
Yes
Is the nozzle1 clogged
or the ink stream bent?
No
Is the gutter section
soiled?
No
Is the ink recovered without
filling the gutter hole with it?
Yes
Is the EZJ125 CN2, CN3, CN4, CN5, CN6 or
CN7 connector, or high-voltage power supply1
CN1 or CN2 connector disconnected?
No
Replace the high-
voltage power supply1.
Is the problem
fixed?
No
Replace the EZJ125 board*1.
Is the problem
fixed?
No
Replace the EZJ133 board.*2
Is the problem
fixed?
No
Replace the EZJ135 board.*3
Is the problem
fixed?
No
Replace the print head. *4
No
Yes
Yes
No
Yes
Yes
END
Yes
END
Yes
END
Yes
END
6-26
Refer to "6.5.8a No ink
ejection from nozzle1."
Refer to "6.2.5a (N1)Ink
Drop Charge Too Low".
Refer to "6.2.5 a (N1) Ink
Drop Charge Too Low".
Refer to "6.5.18 No ink
suction from gutter".
Connect the connector.
(*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]
"3.3.1 EZJ133 board (MPU board)".
(*3): When you replace EZJ135 board, refer to
board (EZJ135) replacement".
(*4)： When you replace the printhead, refer to
Print Head Replacement Procedure".
[Caution]
Be sure to check that there is no wrong connection of
harnesses by referring to
Identifying method of harnesses]
Connection Diagram".
in
"5.7 APH
"4.13
[Connector numbers and
"3.3.20 Electrical
in