Hitachi IJ UX Service Manual page 238

6.2.18 Ink Heating Unit Over Current
Ink Heating Unit
Over Current
Is the PTC resistance
measured (between the
EZJ125 board TP3 and TP15)
lower than 23 Ω?
Yes
Replace the heating unit.
▪ 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.
▪ 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 EZJ126 board.
▪ 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 print head.
- 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".)
No
*) Refer to the
following caution.
No
*) Refer to the
following caution.
No
*) Refer to the
following caution.
No
Resume the
operation.
Caution
!
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