Troubleshooting Theory

1. Troubleshooting Theory

2. Ask the customer about the problem. Analyze and define the problem. Loading problem Quality problem Electronics problem Mechanical problem Ink system problem Troubleshooting Confidential

3. Printing Quality Problems Ask to see printed samples. Check IJ driver board – amplitude and rise time with a ‘Scope’. Print samples yourself. Check bridge temperature. Check Bridge movement (Mechanically). Print “movall” + Nozzles status Files. Check Bridge DST. Check if the problem is “local”. For example if it is a particularly bad IJ head or IJ driver –replace It. Check Bridge Concentricity. Check Timer parameters for resolution. Check the ink level. Check LPAP pressure and PA filter. Check Ink flow. Check ink Filters. Check Ink Viscosity. Printing Quality Problems Confidential

4. Mechanical Problems Perform full printing cycle in order to determine where 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 component or replace if needed. Perform full printing cycle In order to verify that the problem is resolved. Mechanical Problems Confidential

5. Ink System Problems Waste pump problem Ink leakage problem Waste pump can not pumpwaste fluids. Tighten screws and replace O-rings if needed. 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. Ink System Problems Confidential

6. 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 motor Power. Check motor Power. Check buffer and roller sensors. Check humidity level in the room. Check roller Pistons pressure. Check that the loader is leveled and aligned tothe drum. Check motor’s Pulley. Check motor’s Pulley. Clean paper sensors. Check roller and Buffer pulleys. Check Gripper piston Position. Check Paper Left & right Sensors. Check cutter sensors and Flags in the I/O. Check Buffer and Roller timing belts tension. Clean Gripper teeth. Check idler’s gap between the 2 Rolls and perform adjustments if Needed. Check that the cutter is moving mechanically. Check that there are no scraps of paper inside the Buffer – clean it if needed. Cutting media only to One side –check that The Cutter profiles are Aligned. Clean the Cutter’s round knife with alcohol as part of maintenance. Loading Problems Confidential

7. Electronic Problems Data channel DMC motor does not move. Print sample Check tension of Timing belt for the relevant motor. All colors 1 color all over the bridge. Local problem C,M,Y,K or CL,ML problem. Check Pulleys of the relevant Motor. Check IJ Driver Board. Check TLPB board. Check PFM boards. Check relevant timer board. Check power for relevant motor. Check MTFM board. Swap with another board and verify that the problem shifts to another color. Swap with another board and verify that the problem shifts to another Color. Swap with another board and verify that the problem shifts to another color. Check the motor’s Driver. Check that Encoder readings are OK. Check MC controller board. Check IJ Head. Check GALIL board. If problem is not Resolved, replace the PFM. Check Cables between the Components. Electronic Problems Confidential