1. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Inkjet Head Cleaning

2. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 2 Cleaning Unit When installing new/used inkjet heads on the machine or handling clogged heads, it is necessary to use the cleaning unit.

3. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 3 Cleaning Unit (Cont.)  Cleaning the inkjet heads is performed on an as-needed basis, or before inserting a new inkjet head into the system.  Inkjet heads are cleaned one at a time.  Before using the cleaning unit, make sure that:  Filter is clean.  Solvent is clean.  Container is full.

4. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 4 Washing Unit (Cont.) Before performing the cleaning procedure, ensure that the following materials are prepared:  Cleaning unit  Four liters of ink solvent  Large plastic container

5. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 5 Inkjet Head Preparations – Visual Check Two 50-pin flat cables Mounting holes Orifice plate

6. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 6 Preparation of the Cleaning Unit 1.Fill the large plastic container with ink solvent. 2.Place the plastic container in the back of the cleaning unit. 3.Insert the two tubes from the back of the bath into the plastic container. Plastic container Tubes

7. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 7 Preparation of the Cleaning Unit (Cont.) TAB 4 TAB 3 TAB 2 TAB 1 Venting screw

8. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 8 Mechanical Stage Tighten mounting screws Inkjet head in the cleaning unit bracket Venting screw Let the washing unit work for 2-5 minutes with cover closed. Tap 2 Tap 3 Tap 4 Venting Screw

9. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 9 Mechanical Stage (Cont.) The mechanical stage flushes the inkjet head. This step should be performed while the cleaning unit cover remains closed. 1.Place the inkjet head in the bracket on the cleaning unit, using the two mounting screws. Make sure there are two rubber seals on the bracket. 2.Open Taps #2 and #4. 3.Turn on the pump for 30 to 60 seconds and release air bubbles from the filter. 4.Open Tap #3.

10. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 10 Mechanical Stage (Cont.) 5.Turn on the pump. 6.Allow the cleaning unit to operate for 2 to 5 minutes. 7.If some nozzles are not spraying, rub your finger over the orifice plate using recommended gloves. 8.If there are still some spraying problems, change the flushing pressure. 9.If there are still nozzle problems, perform the ultrasonic bath procedure.

11. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 11 Electrical Stage The electrical stage checks the electrical function of the nozzles in the inkjet head. Tap 2 Tap 3 Tap 4 Venting Screw

12. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 12 Electrical Stage (Cont.) The electrical stage checks the electrical function of the nozzles in the inkjet head. 1.Close tap #2. 2.Verify that the pump is off. 3.Close Tap #4 and open Tap #1. 4.Connect a flat cable to the cleaning unit and close the latches. 5.Allow the cleaning unit to operate for 2 to 5 minutes. 6.Turn on the pulse generator. 7.Tune the pulse generator to the highest frequency.

13. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 13 Electrical Stage (Cont.) 8.Allow the nozzles to spray for 15-30 seconds (check for missing nozzle spray). 9.Rotate the frequency selector three clicks to the right. 10.Slide a piece of paper in front of the inkjet head (check for missing nozzle spray ). 11.Turn on the pump for 5 seconds. 12.Turn on the pulse generator again.

14. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 14 Ultrasonic Bath  When encountering heavy clogged inkjet heads, it is recommended to use the Ultrasonic Bath.  Use only distilled water. Pipette Inkjet head Distilled water at room temperature

15. Engineer Training Inkjet Head Cleaning TJ8300 / TJ8500 Confidential 15 Static Washing Unit