Description
Compatible Models: HP Smart Tank 520, 525, 529, 580, 581, 585, 589; HP DeskJet GT 5810/5811/5820/5821; HP Ink Tank 310/315/319/410/415/419; HP DeskJet Ink Advantage 4720/4729/3635/3636/3835; HP DeskJet 1510/2130/2331/2620/2675/2729.
What It Is: The PF (Paper Feed) Sensor - also sold as the Board Assy Encoder PF, Round Encoder Sensor or Disk Sensor - a small optical sensor board that reads the paper-feed roller's rotation so the printer knows exactly how far paper has advanced. A faulty PF sensor causes paper to feed too far or not far enough, inconsistent line spacing, or a paper-jam error even on a clear paper path.
Part Number: F3X12-80054.
Condition: Tested and working - specific condition grade not stated in the source listing.
Warranty: 30-Day Replacement Warranty from date of delivery.
Why Buy From Max Printer Parts: We stock hard-to-find spare parts for HP, Canon, Epson and Brother ink-tank all-in-one printers, sourced and checked before they ship. Message us your exact model and part number before ordering and our team will confirm fitment.
Note: This entire listing is a byte-for-byte duplicate of batch 23's Products_17.xlsx (identical title, description and image) - this whole upload (all 30 rows) matches batch 23 exactly, the first time an entire batch has turned out to be a 100% duplicate of the immediately preceding one. Reused batch 23's suggested content verbatim.