engineer training troubleshooting theory tj8300 / tj8500 troubleshooting theory
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Engineer Training
Troubleshooting Theory
TJ8300 / TJ8500
Troubleshooting Theory
Confidential 2
Engineer Training
Troubleshooting Theory
TJ8300 / TJ8500Troubleshooting
Ask the customer about the problem.
Analyze and define the problem.
Loading problem
Ink systemproblem
Mechanicalproblem
Electronicsproblem
Qualityproblem
Confidential 3
Engineer Training
Troubleshooting Theory
TJ8300 / TJ8500Printing Quality ProblemsPrinting Quality Problems
Ask to see printed samples.
Print samples yourself.
Check bridge temperature.
Print “movall” + Nozzles status Files.
Check if the problem is “local”. For example if it is a particularly bad IJ head
or IJ driver –replace It.
Check the ink level.
Check LPAP pressure and PA filter.
Check Ink flow.
Check ink Filters.
Check Ink Viscosity.
Check IJ driver board – amplitude and rise time with a ‘Scope’.
Check Bridge movement(Mechanically).
Check Bridge DST.
Check Bridge Concentricity.
Check Timer parameters for resolution.
Confidential 4
Engineer Training
Troubleshooting Theory
TJ8300 / TJ8500Mechanical Problems
Mechanical Problems
Perform full printing cycle in order to determinewhere the problem is located.
Verify that the suspected component is causing the problem.For example: un-loader/ loose screw/ pulley/ timing belt.
Adjust the suspected componentor replace if needed.
Perform full printing cycle In order to verifythat the problem is resolved.
Confidential 5
Engineer Training
Troubleshooting Theory
TJ8300 / TJ8500Ink System Problems
Ink System Problems
Ink leakage problemWaste pump problem
Tighten screws and replace O-rings if needed.
Waste pump can not pumpwaste fluids.
Check the main waste bath filterand clean it if needed.
Check the waste pump filter – clean it if needed.
Perform waste pump cleaning Procedures.
Check the air pressure supplied tothe waste pump (2-3 bars for normal
operation). Adjust it if needed.
Confidential 6
Engineer Training
Troubleshooting Theory
TJ8300 / TJ8500Loading Problems
Loading Problems
Paper is missing the Grippers
Registration problem
Cutter problems
Not recognizing paper in the buffer
Paper stuck in the buffer
Un parallel loading to drum
Check buffer load Position in the
RT-Run software.
Check Gripper piston Position.
Clean Gripper teeth.
Check motor’sPulley.
Check Paper Left & rightSensors.
Check motorPower.
Check cutter sensors and Flags in the I/O.
Check that the cutter is moving mechanically.
Check motorPower.
Check motor’sPulley.
Cutting media only toOne side –check that The Cutter profiles are
Aligned.
Clean the Cutter’s round knife with
alcohol as part of maintenance.
Check buffer and roller sensors.
Clean paper sensors.
Check humiditylevel in the room.
Check roller andBuffer pulleys.
Check Buffer and Roller timing belts
tension.
Check that thereare no scraps of paper inside theBuffer – clean it
if needed.
Check roller Pistons pressure.
Check that theloader is leveledand aligned to
the drum.
Check idler’s gapbetween the 2
Rolls and performadjustments if
Needed.
Confidential 7
Engineer Training
Troubleshooting Theory
TJ8300 / TJ8500Electronic Problems
DMC motor does not move.
Electronic Problems
Data channel
Print sample
Local problem1 color all over the bridge.All colors
Check TLPB board.
C,M,Y,K or CL,ML problem.
Check MTFM board.
Check PFM boards.
Swap with another board and verify
that the problem shifts to another color.
Check IJ Driver Board.
Swap with another board and verify that the problem shifts to another
Color.
Check IJ Head.
Check relevant timer board.
Swap with another board and verify
that the problem shifts to another color.
If problem is not Resolved, replace
the PFM.
Check power for relevant motor.
Check that Encoder readings are OK.
Check MC controller board.
Check GALIL board.
Check Pulleys of the relevant Motor.
Check tension of Timing beltfor the relevant motor.
Check Cables between the Components.
Check the motor’s Driver.
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