Hitachi IJ UX - Page 269

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6.4.13 Ink Pressure Low
Ink Pressure Low
Resume the operation.
Yes
Adjust the pressure to standard value
by the pressure reducing valve.
Does MV1, 2, 4, 9 operate?
Replace or repair the troubled
solenoid.
Replace the pressure reducing valve.
Replace the pressure sensor.
Is the warning released?
No
No
Yes
No
Replace or repair the
supply pump
Does ink flow into main ink tank
when operating pump, MV1 &
MV6?
No
Does ink flow into main tank when
operating pump, MV2 & MV6?
Replace or repair the CV assembly.
Replace the three-way valve filter.
Yes
Replace the viscometer filter.
No
No
Yes
Can the pressure be adjusted by
the pressure reducing valve?
No
No
Yes
Yes
Can the pressure be adjusted by
the pressure reducing valve?
Can the pressure be adjusted by
the pressure reducing valve?
Can the pressure be adjusted by
the pressure reducing valve?
Yes
Yes