Trouble Shooting - Leibinger JET3 UP Service Manual

Service Manual JET3

6 Trouble shooting

6.1 Trouble shooting
Problem
Ink build-up on the gutter
Ink stream is jumping
Ink build-up on the deflection
plates
Reason
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
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
Head filter clogged
The position of the ink stream in the gutter
tube is not correct
Service is due
Hydraulic pressure too low"
Solution
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.
Clean nozzle
Clean print head
Exchange oscillator
Exchange head filter
Adjust print head
Check nominal hydraulic settings for
nozzle type.
Remarks
See service document "print head
adjustment".
See service document "cleaning of
nozzle".
See service document "head
adjustment".
Check viscosity with nominal setting.
Exchange oscillator => see service
document "exchange oscillator".
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