WILLETT 430 - Page 3

430 Ink Jet Printer Service and Maintenance Manual
ii
Issue 2
Part No. 306-0430-102
I/O Board LED Check ........................................................................................................................................ 27
Voltage Checks.................................................................................................................................................. 28
Reset Run Hours ............................................................................................................................................... 28
Gutter Fault and Charge Error Disable.............................................................................................................. 29
Set EHT Range (preliminary settings for printhead and EHT table setup)........................................................ 29
Set EHT Trip Level (for printhead setup only) ................................................................................................... 29
Filling the Ink System......................................................................................................................................... 30
Fluid Identification Number (FIN)....................................................................................................................... 31
Fill Mixer Tank ................................................................................................................................................... 31
Calibrate 285 V Rail........................................................................................................................................... 32
VMS Calibration................................................................................................................................................. 32
Nozzle Flush ...................................................................................................................................................... 33
Strobe LED Check ............................................................................................................................................. 33
Ink Jet Alignment ............................................................................................................................................... 33
Head Heater Temperature and Ink Pressure .................................................................................................... 34
Modulation Calibration (Manual)........................................................................................................................ 35
Phase Profile Adjustment .................................................................................................................................. 37
Phase Offset Calibration.................................................................................................................................... 37
Print Charge Value Calibration .......................................................................................................................... 37
Setting EHT Tables for Printing ......................................................................................................................... 38
Clean Shutdown Check ..................................................................................................................................... 38
Set EHT Trip Level (Normal Operation) ............................................................................................................ 39
EHT Trip Test .................................................................................................................................................... 39
Print Height Test ................................................................................................................................................ 39
Restore Calibration Parameters ........................................................................................................................ 40
Enable Gutter Detect and Charge Check .......................................................................................................... 40
Ink Viscosity Measurement................................................................................................................................ 41
Temperature/Viscosity Graphs ...................................................................................................................... 41
CIJ MK 390ID Black....................................................................................................................................... 41
CIJ MK 3903F Red ........................................................................................................................................ 42
CIJ MK 3930F Black ...................................................................................................................................... 42
CIJ EA 3969H Black ...................................................................................................................................... 43
TECHNICAL DESCRIPTION................................................................................................................................ 45
Main Assemblies................................................................................................................................................ 46
Cabinet .............................................................................................................................................................. 46
Top Cover ...................................................................................................................................................... 46
Side Covers.................................................................................................................................................... 47
Base ............................................................................................................................................................... 47
Printhead ........................................................................................................................................................... 48
Construction ................................................................................................................................................... 49
Electronics System ............................................................................................................................................ 51
Control Panel ................................................................................................................................................. 51
Connector Panel ............................................................................................................................................ 53
Control Electronics............................................................................................................................................. 55
General .......................................................................................................................................................... 55
CPU Board ..................................................................................................................................................... 56
I/O Board........................................................................................................................................................ 62
Ink Pump Motor Driver Board ........................................................................................................................ 74
PSU Board......................................................................................................................................................... 77
General Specification..................................................................................................................................... 77
Output Specification....................................................................................................................................... 77
Electronics Modules........................................................................................................................................... 78
EHT Module ................................................................................................................................................... 78
Electronics Compartment Cooling Fan .......................................................................................................... 78
Ink System Pump........................................................................................................................................... 78
Mains Input Circuit ......................................................................................................................................... 79