Hitachi IJ PH Service Manual page 122

5.2 Nozzles Replacement Procedure
(1) Depressurize the printer.
(2) Unscrew the video signal wire setscrews and the charged electrode setscrews, and
remove the charged electrode.
(3) Remove the nozzle setscrew (2 locations), the nozzle IN joint presser foot
(sealing valve side) and the excitation connector.
"Caution" A filter is put in the terminal area (inside the sealing valve) of the nozzle IN
joint and therefore, be careful about dropout.
Sealing valve
(4) Cut off the nozzle side of the nozzle OUT joint by a cutter or the like.
"Caution" When removing the nozzle OUT joint, remove it so as not to
pull the main body side tube.
Nozzle OUT joint presser foot
Main body side
"Caution"
(A) If you scratch the coupling with a cutter or the like, it may cause an ink
leakage and so on.
(B) When removing a cut piece of the tube, cut the tube piece and pull it
off the coupling.
(5) Pull out the nozzle upward with a slope while taking up the front edge of the nozzle.
Pull out the nozzle upward with a slope
(appendix: nozzle drive conditions)
Nozzle OUT
joint
Filter
Excitation
Video signal
connector
wire setscrew
Cut off this part
5-2
Nozzle IN joint
Nozzle setscrew
presser foot
Charged electrode
Charged
electrode
setscrew
Nozzle side