Interpreting control panel lights
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1) | Power button and light | 3) | Cancel button | ||
2) | Configuration Page button | 4) | Resume button and light | ||
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| HP Officejet Pro K550dtn | 5) Printhead lights | |
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| HP Officejet Pro K550dtwn | 6) Ink cartridge lights | |
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For more information, visit the product support website at www.hp.com/support/officejetprok550.
Control panel light pattern | Explanation and recommended action |
The Power light and the Resume | Print media is jammed in the printer. |
light blink. | • Remove all media from the output tray. Locate and clear the jam. See “Clearing jams” |
| in the onscreen user guide. |
The printer carriage has stalled.
•Open the top cover and remove any obstructions (such as jammed media).
•Press 
(Resume button) to continue printing.
•If the error persists, turn the printer off, and then on again.
The Power light is on and the | The printer is out of paper. |
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Resume light blinks. | • Load paper and press | (Resume button). |
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The Power light and the Resume | A cover is not closed completely. |
light are on. | • Make sure all covers are completely closed. |
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| The rear access panel or duplex unit is missing, or is not inserted completely. |
| • Make sure the rear access panel (HP Officejet Pro K550) or the duplex unit |
| (HP Officejet Pro K550dtn/K550dtwn) is inserted completely at the back of the printer. |
The Power light is on, and one or | One or more of the printheads are missing. |
more of the printhead lights blinks. | • Install the printhead indicated, and then try to print. |
| • If the error persists, replace the printhead indicated. |
The Power light, and one or more of the printhead lights blink.
One or more of the printheads are faulty or need attention.
•Ensure the printhead indicated is properly installed, and then try to print.
•If the error persists, replace the printhead indicated.
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