Introduction The HP OfficeJet Pro 6978 is a reliable all-in-one printer, but like any mechanical device, it can experience occasional issues. One common problem users encounter is the carriage jam, which occurs when the printhead or cartridges cannot move freely due to an obstruction. This guide provides detailed steps to troubleshoot and resolve the carriage jam issue to get your pr... https://printersupportnumber.com/hp-officejet-pro-6978-not-printing/