Hitachi IJ PH Service Manual page 5

5. Print head-related maintenance ····················································································5-1
5.1 Outline structure of print head and how to remove each cover ······························5-1
5.2 Nozzles Replacement Procedure (appendix: nozzle drive conditions) ···················5-2
5.3 Deflecting base Replacement Procedure································································5-6
5.4 Cover switch Replacement Procedure ····································································5-9
5.5 Sealing valve (MV9) Replacement Procedure ························································5-10
5.6 Heating unit Replacement Procedure······································································5-12
5.7 Gutter base group Replacement Procedure····························································5-13
5.8 Head base Replacement Procedure ·······································································5-14
5.9 Replacing EZJ98 Board (APH Sensor Board)·························································5-16
6. Troubleshooting ·············································································································6-1
6.1 Troubleshooting List·································································································6-1
6.2 Faults - Ink-stop type ·····························································································6-3
6.3 Faults - Print-stop type·····························································································6-22
6.4 Warning conditions (printing continuously performed) ············································6-33
6.5 Faults - No on-screen indications ············································································6-43
6.6 Miscellaneous ··········································································································6-53
7. Attached Drawing ··········································································································7-1
7.1 Circulation system diagram ····················································································7-1
7.2 Electrical Connection Diagram ··············································································7-2
7.3 Circulation sequence ·······························································································7-3
7.4 Dimensions around charge electrode and deflection electrode ······························7-5
7.5 Excitation curve ······································································································7-6