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.