4.6.1 Pressure Sensor (Nozzle 1) Replacement Procedure ······························· 4-18
4.6.2 Pressure Sensor (Nozzle 2) Replacement Procedure ······························· 4-20
4.7 Circulation Unit Replacement Procedure ···················································· 4-23
4.8 Pump Parts Replacement ······································································· 4-25
4.8.1 Pump Unit Replacement Procedure ······················································ 4-25
4.8.2 Drive unit replacement procedure ························································· 4-28
4.8.3 Pump head replacement ····································································· 4-30
4.8.4 Motor replacement ············································································ 4-32
4.8.5 Gear replacement ············································································· 4-34
4.8.6 Recovery pump2 drive unit replacement procedure ·································· 4-35
4.8.7 Recovery pump2 pump head replacement ············································· 4-37
4.8.8 Recovery pump2 motor replacement procedure ······································ 4-39
4.8.9 Recovery pump2 gear replacement ······················································ 4-41
4.9 Circulation Filter and Makeup Filter Replacement Procedure ··························· 4-43
4.9.1 Circulation Filter and Makeup Filter
in Nozzle 1 path Replacement Procedure··············································· 4-43
4.9.2 Circulation Filter and Makeup Filter
in Nozzle 2 path Replacement Procedure··············································· 4-44
4.10 Ink Reservoir/Makeup Reservoir Replacement Procedure ····························· 4-45
4.10.1 Ink Reservoir replacement ································································· 4-45
4.10.2 Makeup Reservoir replacement ·························································· 4-47
4.11 Solenoid Replacement Procedure ···························································· 4-49
4.12 Troubleshooting when Fault Occurs in Viscometer ······································· 4-52
4.12.1 Viscometer removal procedure ··························································· 4-52
4.12.2 Disassembling and washing viscometer ·············································· 4-54
4.12.3 Viscometer assembly procedure ························································· 4-55
4.12.4 Viscometer attaching procedure ························································· 4-55
4.12.5 Replacing thermistor ········································································ 4-56
4.13 Print Head Replacement Procedure ·························································· 4-57
4.14 Troubleshooting Procedure for the Circulation System ·································· 4-63
4.15 Repairing Method When the Circulation Route Is Dry or Sticks ····················· 4-73
4.15.1 Recovery method when solenoid valve is stuck ····································· 4-73
4.15.2 Repairing method for the supply pump ················································· 4-73
4.15.3 Repairing method for the makeup pump ··············································· 4-74
4.15.4 Repairing method for the circulation pump ············································ 4-74
4.15.5 Repairing method for the recovery pump ·············································· 4-75
4.15.6 Recovery method when the CV assembly is drying/clogging ···················· 4-76
4.16 Maintenance Work of Intake fan unit ························································ 4-77
4.16.1 Structure of Intake fan unit ································································ 4-77
4.16.2 Replacement of Intake fan unit ··························································· 4-77
4.17 R air filter Replacement Procedure ·························································· 4-79
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