The adjuster may not go all the way forward, depending on the length of the paper. When using the manual feed slot, you must also adjust the paper-width selector on the front of the printer for the width of the paper you are manually loading. HP DeskJet 1600C and 1600CM Printers - Self-Test Page The wrong paper width setting could result in a paper jam. When loading transparency HP DeskJet 1600CM Printer singly into the manual feed slot, insert the[…]