Hitachi UX Twin Nozzle Service Manual page 262

6.2.10a (N1)Ink Heating Unit Too High
(N1)Ink Heating Unit Too
High
▪ Clear the fault.
▪ From the maintenance screen, place
the heating unit in the operating mode. *)
▪ Restart the IJ printer.
Does the ink jet out?
Yes
Disconnect EZJ125 board
CN7 connector and
reconnect it.
▪ Clear the fault.
▪ From the maintenance screen, place
the heating unit in the operating mode. *)
▪ Restart the IJ printer.
Does the fault recur?
Yes
Replace the heating unit*1.
▪ Clear the fault.
▪ From the maintenance screen, place
the heating unit in the operating mode. *)
▪ Restart the IJ printer.
Does the fault recur?
Yes
Replace the EZJ125 board.*2
・ Clear the fault.
・ From the maintenance screen, place
the heating unit in the operating mode. *)
・ Restart the IJ printer.
Does the fault recur?
Yes
Replace the EZJ133 board.*3
- On detecting this fault, the IJ printer automatically sets the "Ink temperature
correction" to (disable).
"System environment setup: Ink temperature correction (enable)  (disable)"
After getting rid of the fault, reset the Ink temperature correction to (enable).
"System environment setup: Ink temperature correction (disable)  (enable)"
- In the condition of the "Ink temperature correction (disable), " the "Ink Temperature
Correction Notice" message appears each time the power is turned on.
(See "1.6 Heating of Ink" in the Instruction manual. )
*) Refer to the following caution.
See Section "6.5.8a, No ink ejection
No
from nozzle1."
*) Refer to the following caution.
No
*) Refer to the following caution.
(*1): When you replace Heating unit, refer to "5.6 Heating unit
replacement".
(*2): When you replace EZJ125 board, refer to [Replacement
procedures of EZJ125 board] in "3.3.5 EZJ125 board (Nozzle1
drive board)".
No
(*3): When you replace EZJ133 board, refer to
procedures of EZJ133 board]
board)".
[Caution]
Be sure to check that there is no wrong connection of harnesses by
referring to
harnesses]
*) Refer to the following caution.
No
Resume the
operation.
Caution
!
6-20
in
[Connector numbers and Identifying method of
"3.3.20 Electrical Connection Diagram".
in
[Replacement
"3.3.1 EZJ133 board (MPU