Hitachi IJ RX2 Service Manual page 5

4.6 Pressure Sensor Replacement Procedure ···························································· 4-13
4.7 Circulation Unit Replacement Procedure ····························································· 4-15
4.8 Pump Parts Replacement ···················································································· 4-17
4.9 Troubleshooting when Fault Occurs in Viscometer ··············································· 4-22
4.10 Print Head Replacement Procedure ···································································· 4-27
4.11 Troubleshooting Procedure for the Circulation System ········································ 4-30
4.12 Repairing Method When the Circulation Route Is Dry or Sticks ························· 4-35
4.13 Maintenance Work of Intake fan unit ································································· 4-37
4.14 R air filter Replacement Procedure ··································································· 4-39
4.15 Liquid Spill Check on Exhaust Duct ··································································· 4-41
5. Print head related maintenance ················································································ 5-1
5.1 Print head rough configuration ·············································································· 5-1
5.2 Cable running direction ························································································· 5-2
5.3 Gutter configuration and replacement method ······················································ 5-3
5.3.1 Gutter configuration ························································································ 5-3
5.3.2 Replacement method ······················································································ 5-3
5.4 MGV filter replacement ·························································································· 5-4
5.5 Shutoff valve (MV9) replacement ·········································································· 5-6
5.6 Heating unit replacement ······················································································ 5-8
5.7 APH board replacement ························································································ 5-10
5.8 Nozzle replacement ······························································································ 5-11
5.9 Nozzle Orifice Cleaning ························································································· 5-13
6. Troubleshooting ·········································································································· 6-1
6.1 Troubleshooting List ······························································································ 6-1
6.2 Faults - Ink-stop type ··························································································· 6-3
6.3 Faults - Print-stop type ·························································································· 6-25
6.4 Warning conditions (printing continuously performed) ··········································· 6-37
6.5 Faults - No on-screen indications ·········································································· 6-47
7. Attached Drawing ········································································································ 7-1
7.1 Circulation system diagram ················································································· 7-1
7.2 Electrical Connection Diagram ············································································ 7-2
7.3 Circulation sequence ····························································································· 7-4
7.4 Dimensions around charge electrode and deflection electrode ····························· 7-6