4.7 Pressure Sensor Replacement Procedure ···························································· 4-13
4.8 Circulation Unit Replacement Procedure ······························································ 4-14
4.9 Troubleshooting when Fault Occurs in Viscometer ··············································· 4-17
4.10 Print Head Replacement Procedure···································································· 4-23
4.11 Troubleshooting Procedure for the Circulation System········································ 4-25
4.12 Repairing Method When the Circulation Route Is Dry or Sticks ·························· 4-30
5. Maintenance of Circulation System (PXR-P) ···························································· 5-1
5.1 General Structure of Circulation System ······························································· 5-1
5.2 Main Ink Tank and Ink Reservoir Replacement Procedure···································· 5-4
5.3 Pressure Relief Valve Replacement Procedure ···················································· 5-7
5.4 Joint Structure and Handling ················································································· 5-7
5.5 Pump Unit Replacement Procedure······································································ 5-9
5.6 Solenoid Valves Replacement Procedure ····························································· 5-9
5.7 Replacement procedure for pressure sensor and pressure switch for air ············ 5-11
5.8 Circulation Unit Replacement Procedure ······························································ 5-13
5.9 Troubleshooting when Fault Occurs in Viscometer ··············································· 5-15
5.10 Stirrer replacement procedure ··········································································· 5-16
5.11 Print Head Replacement Procedure ···································································· 5-18
5.12 Troubleshooting Procedure for the Circulation System ······································· 5-18
5.13 Repairing Method When the Circulation Route Is Dry or Sticks ·························· 5-18
5.14 Repairing method for each solenoid valve and pump using solenoid pump········ 5-19
6. Print head-related maintenance·················································································· 6-1
6.1 Outline structure of print head and how to remove each cover ····························· 6-1
6.2 Nozzles Replacement Procedure (appendix: nozzle drive conditions)·················· 6-2
6.3 Deflecting base Replacement Procedure ······························································ 6-6
6.4 Cover switch Replacement Procedure ·································································· 6-9
6.5 Sealing valve (MV9) Replacement Procedure······················································· 6-10
6.6 Heating unit Replacement Procedure ··································································· 6-12
6.7 Gutter base group Replacement Procedure·························································· 6-13
6.8 Head base Replacement Procedure ····································································· 6-14
6.9 Replacing EZJ98 Board (APH Sensor Board)······················································· 6-16
7. Troubleshooting ·········································································································· 7-1
7.1 Troubleshooting List ······························································································ 7-1
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