Hitachi IJ UX Service Manual page 236

6.2.14 Ink Heating Unit Temperature Sensor Fault
Ink Heating Unit
Temperature Sensor
Fault
Disconnect the 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?
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?
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?
Replace the EZJ126 board.
- 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.
No
Yes
No
Yes
No
Yes
Caution
!
6-18
*) Refer to the
following caution.
*) Refer to the
following caution.
Resume the
operation.