Hitachi IJ PH Service Manual page 91

4.1.2 Approach to the parts on the front side of the equipment
1 Move the ink reservoir and the makeup ink reservoir to a safe place after
removing the connection tube block.
Connection tube block
Ink reservoir
2 Remove the ink filter from the fixture and draw it out.
3 Remove the fixing screws (2 pieces) of the reservoir base and remove
the reservoir base.
Fixing screw
Holder
4-2
Connection
tube block
Ink filter
Reservoir base
Makeup ink
reservoir