Hitachi IJ UX Service Manual page 297

6.5.23 Liquid dripping from Air Exhaust
Liquid dripping from Air Exhaust
No
Do MV11and MV12 operate?
Yes
Replace MV11 and/or MV12 or clean any
ink build up or other foreign matters on
MV11/MV12.
No
Is the problem fixed?
Yes
Perform air exhaust washing by pressing "Air
exhaust vent backwash "button. Follow the
instructions and sprinkle makeup over the
opening of Air exhaust of mist separator.
Yes
Is Makeup suctioned?
No
Replace the pump unit. Resume the operation.
6-79