Hitachi IJ PH Service Manual page 123

(6) Attach a new nozzle and fix the nozzle setscrew, (2 locations), the nozzle IN joint
presser foot (sealing valve side), the nozzle OUT joint and the excitation connector.
"Caution"
(A) Confirm that a filter is present in the terminal area (inside the sealing
valve) of the nozzle IN joint.
(B) Wet the insert portion inside the sealing valve with the intensifier
to make it slippery and then, connect the nozzle IN joint.
"Caution"
If connection is imperfect, ink will below off.
Sealing
valve
Nozzle out joint
Recovery side tube
The nozzle attachment position differs for different nozzle diameters as shown below:
(7) Cut the recovery side tube of the new nozzle into a suitable length and connect the
nozzle OUT joint.
"Caution"
(A) Get rid of the tube remaining on the joint in the (4).
(B) When the tube is hardly put in the joint because it slips, grasp the front
edge of the tube by a JK wiper or the like and put it in the joint.
(8) Put the charged electrode in the new nozzle and fix the video signal wire on the
charged electrode.
(9) Execute Ink stream alignment on the Circulation control screen.
"Caution"
(A) If you repeat Ink stream alignment, it will be diluted. Complete it by the third
time.
(10) Perform Excitation adjustment and Auto phase gain adjustment on the screen of
Adjustment/operation checkout.
Nozzle IN joint
Filter
presser foot
O-ring P3.9
Take in the stepped part
PH 65µm nozzle
attachment position
5-3
Nozzle setscrew
(2 locations)