Tutorial: Align the chip with the corresponding groove on the chip resetter so that the probes of the chip resetter correspond to the contacts on the ink 's chip. Bring the two components together tightly. If the red light comes on, it indicates correct and good contact. After about 5 seconds, the red light change to green, indicating that the ink chip record has been refreshed. Inject dye ink into the ink or use other /compatible inks to usable. Usage precautions: When the ink shows , do not always try to restore it, otherwise, it lock the numbers. When the ink level displayed on the chip is below 15%, you must reset the chip with a chip resetter immediately, otherwise, the ink display an error message. The red indicator light continues to blink and does not change to green: Reason one: The probes of the chip resetter are not aligned with the contacts on the chip, or the contacts are dirty. Reason two: If a non-genuine ink is used, the chip may not make close contact with the probes. Product Name: Maintenance Chip Resetter Part NO.: C9345/C12C93459 Port: Type-C Suitable Printers: -7820/-7830/-7840/-7835/-7845/-7848 M15140/M15146/M15147/-C8000/-C8090 ET-5800/ET-5850/ET-5880/ET-16000/ET-16600/ET-16650 ET-16600/ET-8500/ET-8550/EC-C7000 L18050/L8050/L8168/L8180/L8188/L6550/L6570/L6580/L15150 L5150/L15158/L15160/L15168/L11160 Colour: As Shown Material: ABS Package Contents: 1 x Decoder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.