... never let you down or feel unhappy. 4. Long-term technical support, service never ends, we work till you are satisfactory & ... parts: printer head, head pin, head cable, guide, main board, power board, ribbon carriage, RDA, ribbon mask, tractor, gears...2. Laser ... elements, upper roller & pressure roller, separation pad, format board, power board, scanner, and fuser unit...3.Copier and Fax parts :Exp ...