Hitachi IJ PH Service Manual page 3

1. Introduction ····················································································································1-1
1.1 Safety precautions ·································································································1-1
1.2 Structure of each part in the main body ·································································1-7
1.2.1 External views (PH-D)·······················································································1-7
1.2.2 Main body internal (PH-D) ················································································1-8
1.2.3 Print head ········································································································1-9
1.3 Installation ··············································································································1-10
1.3.1 Wiring of power supply ····················································································1-10
1.3.2 Installation procedure (PH-D) ···········································································1-13
2. Maintenance work ·········································································································2-1
2.1 Setting of maintenance mode by service personnel ···············································2-1
2.2 System environment setup ······················································································2-4
2.3 Adjustment/operational checkout·············································································2-6
2.3.1 Excitation adjustment ························································································2-6
2.3.2 Charging voltage confirmation ········································································2-8
2.3.3 Phase margin test ···························································································2-9
2.3.4 Auto phase gain adjustment ············································································2-12
2.3.5 Level sensor confirmation ···············································································2-14
2.3.6 Heating unit confirmation ················································································2-15
2.4 Test of solenoid valve/pump ···················································································2-16
2.5 Download ···············································································································2-18
2.6 Calibration of viscometer ·······················································································2-20
2.6.1 Calibration of viscometer ·················································································2-20
2.6.2 Confirmation of the ink viscosity coefficient ····················································2-22
2.6.3 Operation test of viscometer ···········································································2-23
2.7 Ink concentration control ·······················································································2-24
2.8 System reset ·········································································································2-25
2.9 Back up ·················································································································2-26
2.10 Unit information ···································································································2-28
2.11 Handling of the warning "Product Speed Matching Error" ··································2-29
2.12 Language registration ·························································································2-30
2.13 Fault / Warning log management code ·······························································2-32
2.14 Software option set up ························································································2-34
2.15 Rescue Memory Card ························································································2-36
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