This document is for HP Officejet Pro 251dw, 276dw, and 8600 printers.
note:When a message displays that says that a cartridge is empty, it must be replaced before you can continue printing. Some ink from all the cartridges is required to run printhead servicing tasks to prevent ink clogs.
note:Ink level warnings and indicators provide estimates for planning purposes only. When an indicator shows low ink levels, consider having a replacement ink cartridge available to avoid possible printing delays. You do not need to replace ink cartridges until you are prompted to.
note:The Ink Level icon that displays on your control panel differs depending on your printer model.
note:Make sure that the colored dot on the cartridge label matches the colored dot on the slot.
caution:Do not lift the latch handle on the carriage to insert cartridges. Doing so could cause the printhead or cartridges to be incorrectlyseated, which could damage the print mechanism and cause printing problems.
note:If the printhead is badly clogged, you might need to clean the printhead several times to restore normal print quality.
note:There are three printhead cleaning stages. Complete all three stages if necessary. If the printhead is badly clogged, you might need to start another cleaning cycle. If so, wait 30 minutes after the last (third) cleaning stage to start the first stage of the cleaning process over again.
caution:Never turn off the printer when ink cartridges are not installed. To avoid issues that require cleaning the printhead or that can damage the ink system, always replace ink cartridges as soon as possible, and always turn off the printer using the Power button.
caution:Wait until you have a new printhead assembly available before you remove the cartridges. HP recommends that you do not leave the cartridges outside the printer longer than 30 minutes. This could damage both the printer and the cartridges.
note:Keep a print sample that shows the problem. If the ink cartridges, printhead, or printer is replaced under warranty, the support agent will request the print sample. If the printer is returned to HP, the print sample must be returned with the printer. Place the sample in the output tray when you package your printer for shipping.