HP Color LaserJet 4550

How to Identify and Fix Common Problems ?

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The printer is either low in toner, the density is set too low, or the Economode may be turned on. Remove the toner cartridge and shake it. This will redistribute the toner and often will temporarily solve the problem. However, this usually indicates it is time to install a new cartridge.
Make sure your devices are properly connected with each other, and the network or the cable you use to connect these devices is normal. You can also try restarting your HP printer. Turn it off completely and unplug the power cord, leave it for a couple of minutes, and then plug the cord back and power on the printer.
If one or more toner cartridges are installed incorrectly, this may result in a 54.2 carousel rotation error. This error is typically accompanied by a loud grinding noise. NOTE: The carousel is the rotating part under the top cover to which all four print cartridges attach.
1: Check Printer Power, Cables, and Paper

Check that the correct paper is properly loaded into the printer and is not jammed. Replacing damaged cables, plugging in loose or disconnected cables, and fixing paper jams as necessary may resolve the issue.

Turning the power ON/OFF while the print monitor screen is displayed may cause the printer driver to go off-line and make printing impossible. In this case, open the [Printers / Printers and Faxes / Devices and Printers] folder on the computer and check if your printer driver is shown as off-line.
This code indicates the disconnected status of your HP printer. Here are solutions you can try to fix this. 1. Reconnect the printer and then reinstall the printer driver.
The Power light blinks at a steady interval when the printer is processing a print job. If the Power light blinks fast, the ink cartridge door might be open, or the printer might be in an error state. If an error message displays on the computer screen, follow the on-screen messages to resolve the issue.
Turn the printer off then back on. If the issue persists, turn the printer off, unplug the power cord and then wait at least three minutes before plugging the power cord back in and turning the printer back on. If the issue persists, ensure the product is running the latest firmware available from HP.com.
Most printers will stop working when they`re out of paper, ink or toner, or if the unit detects an issue with the ink or toner cartridge. When this occurs, you might receive an error message or notice blinking green or amber lights on your printer.
Among the more common technical issues that may bring down a printer are disconnected cables, malfunctioning routers, and low ink levels. Moreover, software problems such as interrupted connections or incorrect settings in your system`s drivers can also cause your printer to show up as offline.
Running out of ink

If your printer runs out of ink, obviously the pages will come out blank when you attempt to print out what you need. Most of your HP printers will already have some kind of indicator to let you know that you are running slot. Solution: The solution is a no-brainer. Replace the ink cartridges.

The paper might not be engaged with the feed rollers. The paper-width guide is pressed against the paper stack too tightly. The paper tray is not completely inserted into the product. The paper settings in the print driver do not match the paper loaded in the paper tray.
The paper might not be engaged with the feed rollers. The paper-width guide is pressed against the paper stack too tightly. The paper tray is not completely inserted into the product. The paper settings in the print driver do not match the paper loaded in the paper tray.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Color LaserJet 4550 Streaking
ANSWER : hello,

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HP Color LaserJet 4550

HP Color Laserjet 3800 problem when printing color
ANSWER : Do a cold reset

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HP Color LaserJet 4550

Suggestions for previous generation of HP color laser jets?
ANSWER : You can just replace the drum wiper blades. http://www.uninetimaging.com/c/539/hp-8500-8550-ep-82

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HP Color LaserJet 4550

HP laser jet 3015 "Upgrade Error Call HP Support"
ANSWER : rgtr

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HP Color LaserJet 4550

My 2550n Color LaserJet does not want to print in color
ANSWER : That model had issues with the carousel solenoid sticking. That might explain why it works after you let it sit for 10 minutes. The solenoid gets hotter with use which causes the deteriorated foam on it to become sticky and hold down the release plate instead of letting it go. This allows the carousel to spin when it is supposed to stop for each color. The solenoid is located on the right side of the printer. If you open the lid, it is just behind the opening at the top right. You need to remove the top of the printer and scrape off the goo on top of the solenoid body. I put a piece of thin sticky backed felt to replace it. Other people use electrical tape.

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HP Color LaserJet 4550

hp deskjet 960c printing problem
ANSWER : RE: HP 960c printer. I have new cartridges and the test page prints out full color. When printing a color document the page prints in black & white. Why not color? The print page is on color not black & white.

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HP Color LaserJet 4550

Reset HP Color Laserjet 4700 transfer kit
ANSWER : How about the situation when resistor does not reset the transfer belt count and even new transfer belt out of the box is not doing it. Do you have any idea how to solve this problem? I did reset transfer belts and fusing units on several HL 4700 printers with no problem but also I came across few which were not possible to reset even with oryginal parts.

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HP Color LaserJet 4550

HP Deskjet 640c wont print??
ANSWER : yes

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HP Color LaserJet 4550