Leibinger JET3 up, Service Manual

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28
Service Manual JET3
6 Trouble shooting
6.1 Trouble shooting
Problem Reason Solution Remarks
Ink build-up on the gutter
Print height is too small
Wrong position of the ink stream in the
gutter
Viscosity is too thin
HV module on controller board is defective
Increase print height in job parameter.
Adjust print head.
Leave printer on with open nozzle and
check until viscosity matches with
nominal visco setting
Exchange power supply.
See service document “print head
adjustment”.
Ink stream is jumping
Dirt inside the nozzle
The position of the ink stream inside the
charging electrode or gutter is not correct.
Incorrect hydraulic pressure setting
Viscosity does not match with default value
Oscillator defect
Clean nozzle
Clean print head
Exchange oscillator
See service document “cleaning of
nozzle
”.
See service document “head
adjustment”.
Check viscosity with nominal setting.
Exchange oscillator => see service
document “exchange oscillator”.
Ink build-up on the deflection
plates
Head filter clogged
The position of the ink stream in the gutter
tube is not correct
Service is due
Hydraulic pressure too low"
Exchange head filter
Adjust print head
Check nominal hydraulic settings for
nozzle type.