... chip of the main board, when installing the print head,After the installation, please type a file of 5 pieces A4 paper ... the ribbon rack. This will let the needle of the head have a period of adjustment. We hope you will operate ... , Ink, Ink Cartridge, Printer Ribbon and etc. Spare parts: Print Head, Upper Fuser Roller, Lower Fuser Roller, Fuser Film Sleeve, Pickup ...