Hitachi PB - Sealing Valve (MV9) Replacement Procedure

5-9
Makeup ink IN joint
Sealing valve presser foot
Sealing valve
Nozzle IN
j
oint
p
resser foot
Heating unit
5.5 Sealing valve (MV9) Replacement Procedure
(1) Depressurize the printer.
(2) Remove the head cover and the heater cover.
(3) Remove the head base rear cover and disassemble the connector of the sealing valve.
(4) Unloosen the nozzle IN joint presser foot and the sealing valve presser foot.
①A filter is put in the terminal area (inside the sealing valve) of the nozzle IN joint.
(5) Take up the sealing valve, remove the makeup ink IN joint and remove the sealing
valve.
①Lift the fore of the sealing valve as in the drawing.
②
When the O-ring (P2.2) is remained at the heating unit, remove it.
Sealing valve connector
Makeup ink IN joint
Sealing
O-ring P2.2
Heating unit
Filter
Sealing valve packing