I have a HP OfficeJet Pro 9025 All-in-One printer. The cartridge carrier became stuck to the right and would not move either by the printer or manually. Upon inspection, a small white gear at the end of a drive shaft keyed to hold the gear on was laying in the bottom of the printer and there was a large build up of ink in the bottom of the printer. The gear appears to move a head cleaner assembly past the print head after each print. The white gear is split and whatever kept it on the en of the shaft is not present. Can this be repaired? Is there a repair manual and a parts list?