Pressure Sensor Replacement Procedure - Hitachi IJ PH Service Manual

4.7 Pressure Sensor Replacement Procedure

1 Perform "Nozzle Backwash". (At the end of automatic stop without pouring
the makeup ink to the gutter)
2 Turn off the power supply.
3 Perform "4.1.3 Approach to the parts on the rear side of the equipment".
(The reason is that the connector is provided on the rear side of the
equipment.)
4 Remove the connector of the pressure sensor.
Connector for the pressure
sensor
5 Remove the screws (2 positions) that fix the pressure sensor.
The pressure sensor can be removed.
"Caution" Put wiping paper under the solenoid valve to provide for an ink
drip.
6 Clean the portion stained with ink and then install a pressure sensor by
reversing the above procedure.
Fixing screw
4-14
Pressure sensor
Unit door
Pressure sensor