how to repair epson printer head

{"cid":"91199747","title":"DX10 DX7 Epson Print Head Wall Printer Spare Parts Printing Machine Accessories","imgUrl":"https:\/\/img.chinax.com\/nimg\/ae\/bc\/1f023431dc01009d3c3043519e6f-200x200-1.jpg","attrs":{"Brand Name":"Maxwave","Model Number":"MW-TX800","Minimum Order Quantity":"1","Delivery Time":"Large Stock","Certification":"ISO9001\/SGS","Place of Origin":"China","Payment Terms":"T\/T, Western Union","Supply Ability":"200000\/Per Year","Packaging Details":"Wooden Case","Type":"Construction Tool Parts","Usage":"Wall Printer head","Material":"Alloy Steel","Head type":"DX10 double head","Print Head":"DX17 double head","Application":"UV Wall Printer"}}

{"cid":"91222200","title":"350ml Ink Type Fast CAD Paper Roll Pattern Inkjet Plotter for Machinery Repair Shops","imgUrl":"https:\/\/img.chinax.com\/nimg\/3b\/b3\/9f34870e0657f71df01db1a9ce5e-200x200-1.jpg","attrs":{"Price":"$1,250.00\/sets 1-4 sets","Brand Name":"KAEMI or OEM","Condition":"New","Applicable Industries":"Garment Shops, Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Home Use, Retail, Printing Shops, Construction works\u00a0, Other, Advertising Company, All Other Fileds Need Cut Cutting or Printing","Weight (KG)":"100","Showroom Location":"Turkey, Viet Nam, Bangladesh, Cambodia","Video outgoing-inspection":"Provided","Machinery Test Report":"Provided","Marketing Type":"Ordinary Product","Warranty of core components":"1 Year","Core Components":"Motor, Mother Board and Drivers","Place of Origin":"Hubei, China","Warranty":"1 Year, 1 Year Warranty for Full Machine, 1 Year","Product Name":"350ml Big Ink Box Fast CAD Paper Roll Pattern Inkjet Printing Plotter","Ink Type":"350ml Continuous In Tank or Cartridge","Ink Color":"Black","Printing Speed":"120 SQM\/Hour","Power Consumption":"150-200W","Application":"Paper Pattern Printing","workable Paper Rolls":"40 to 120gsm Paper Rolls","Other Usages":"Graph, Contour Printing","Interface":"LAN Port or Network Port"}}