HP Color LaserJet 4550

How to Identify and Fix Common Problems ?

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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.
When a 50.4F. 00 error is displayed on the control panel, it indicates that there is an issue with the fuser or the power outlet where the printer is connected. Turn the printer off, and then back on to clear the error. Ensure that the power outlet, to which the printer is connected, is in good working condition.
Make sure the printer is turned on, and Wi-Fi is enabled. If your printer does not support Wi-Fi, or is using a wired connection, make sure the Ethernet cable or connecting cable is firmly plugged into your printer. Make sure the printer and computer are connected to the same network. Disconnect the network.
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. If the printer isn`t making the noise with the toners all out, then it may be one of the toners causing this issue and making the noise.
This error is primarily caused by one of the following conditions: A transfer alienation failure in which the ITB is stuck and unable to properly engage the internal transfer rollers. The SR9 sensor (the primary transfer roller disengagement sensor) has gone bad. The fuser drive assembly has failed.
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.
Laser printer fusers adhere toner powder to a page using a combination of heat and pressure. Error 50.5 occurs when the fuser fitted physically but the printer has specifically identified it as wrong.
50.2 error indicates that the printer is not heating up fast enough. This can be caused by a bad heating element in the fuser but can also be caused when the printer does not have adequate power due to overloaded circuits or being plugged into a power strip or surge bar that limits current flow.
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.

The four standard cartridges would be present attached to a rotating device called Carousel under the printer cover. The issues with the carousel rotation and the misplacement of the cartridges upon the printer devices would result in issues with the printer device called as printer error 54.2.
Recommended action. Turn the printer off, wait 15 seconds and turn the printer back on (using the power switch located on the back of the printer). The error code should not appear again.
This error is primarily caused by a transfer alienation failure in which the ITB is stuck and unable to rotate, the SR9 sensor (the primary transfer roller disengagement sensor) has gone bad or the fuser drive assembly has failed.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Multiple paper feed
ANSWER : Most likely the pickup roller solenoid is sticking. The way it works is the solenoid energizes, pulling down a metal plate that releases the pickup roller. There is some foam on the base to quiet the clicking sound. The foam deteriorates and the plate sticks to the gooey residue. This allows the pickup roller to continue to turn instead of stopping after one revolution when the plate springs back up. That results in multiple paper being fed. Solution is to find the solenoid, which is at the end of the pickup roller shaft. Remove the sticky foam and preferably replace it with some thin sticky backed felt. You can find it at a hardware store as it is used on the bottom of chair legs.

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HP Color LaserJet 4550

Print Quality Issue (Streaks and Ghosting)
ANSWER : Streaks are mostly caused by internal drum wiper blades that clean left over toner off the drum to prepare it for a new image. Ghosting is caused by a leftover image on the drum. The 6 inches that you mention would be the circumference of the part that is causing it. Fusers will never cause either problem.

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HP Color LaserJet 4550

HP Colour laserjet 2550n printer Tray2 issues
ANSWER : Ensure that the printer is turned on and in the Ready state.

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HP Color LaserJet 4550

feed issue
ANSWER : Haven’t seen this issue on that model. Solenoids never go bad. Every solenoid HP has ever used has this sponge to dampen the clicking noise. The sponge will disintegrate from heat and use and then become sticky. This causes the pickup roller release plate to stick and allow the roller to rotate continuously. All you have to do is scrape off the goo and replace with thin sticky backed felt. I’ve fixed thousands of them this way.

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HP Color LaserJet 4550

issue with paper
ANSWER : the printer in question is a epson xp310, thank you

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HP Color LaserJet 4550

Printer having issues detecting paper
ANSWER : There’s only the one sensor in the printer that is just before it gets under the cartridge path. Once the paper hits that sensor, the printer assumes that it is ready to get print on it and prints until the job is done, whether the paper moves or not. If it doesn’t hit the sensor or doesn’t clear it after printing, then the printer signals a paper jam. I’ve never seen an inkjet where the transport mechanism after the pickup roller fails to move the paper. So, if it picks up and gets to the sensor, the only thing I’ve ever seen stop it is a scrap of paper left behind after someone impatiently yanked a jammed paper out. What to try is to take a piece of file folder and shove it down the paper path in the direction paper normally moves. The file folder is usually stiff enough to push out any unseen leftover scraps of paper.

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HP Color LaserJet 4550

Antivirus Technical Issues Fix Via AVG Customer Support
ANSWER : Obviously, English isn’t your first language. Usually that is a big red warning flag of some sort of scam. Anyone clicking on the link you provide will definitely get some nasty malware.

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HP Color LaserJet 4550

Multiple Pagefeed
ANSWER : Worn separation pad located behind the pickup roller.

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HP Color LaserJet 4550