HP Color LaserJet 4550DN

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Unbelievable! I’m an electronics engineer with 30 years experience, and never would have thought that this trick would have worked. But it does! Congratulations to everyone who contributed here – another happy HP2300 plus N610 JetDirect card user!

How to Identify and Fix Common Problems ?

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The d in both cases means it can print duplex (front and back) printing The n is for wired networking. The w is for wireless (AND wired) networking.
All HP Jetdirect print servers have a default IP address of 192.0. 0.192.
HP Jetdirect is the name of a technology sold by Hewlett-Packard that allows computer printers to be directly attached to a local area network.
A JetDirect Socket means that the server communicates with the printer via a standard TCP socket connection over the network. This method of connection is often called a Standard TCP/IP Port in other non-HP brands, and the process is commonly refereed to as setting up a “networked printer”.
What`s the difference between an inkjet printer and a laser printer? An inkjet printer uses ink to print documents, while a laser printer uses a laser to print documents. Pretty simple, right? The different printing processes affect each printer`s speed, functions, and image quality.
Laser printers can print faster than inkjet printers. It won`t matter much if you print a few pages at a time, but high-volume users will notice a huge difference. Laser printers produce perfect sharp black text. If your print jobs are mostly text with occasional graphics, laser is the way to go.
Telnet to the IP address of the Jetdirect print server. If prompted for a user name and password, enter “Admin” for the user name.
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9100 TCP port is used for printing. Port numbers 9101 and 9102 are for parallel ports 2 and 3 on the three-port HP Jetdirect external print servers.
How do inkjet printers work? In the inkjet printing mechanism, the print head has several tiny nozzles, also called jets. As the paper moves past the print head, the nozzles spray the ink onto it, forming the characters and images.
Socket printing is the name applied to several different methods of printing to a network socket. Printing on a mainframe to a printer by opening up a TCP port and sending raw data is called socket printing, as is HP`s printing to the telnet port.
LPD is an old standard, IPP is newer. Ubuntu uses the Common UNIX Printing System (“CUPS”) to handle printing. CUPS uses the Internet Printing Protocol (“IPP”) as the basis for managing print jobs and queues. Other protocols are also supported (LPD, SMB, AppSocket a.k.a. JetDirect), some with reduced functionality.
Laser printers are machines that melt toner powder onto paper to create a print. Laser printers are more expensive than inkjet printers upfront and uses pricier toner cartridges but is still a more economical option in the long run with its overall lower cost per page, faster print speeds.
Although laser printer cartridges are more expensive, laser printers have a significantly lower cost per page than inkjet printers, particularly if you`re looking to print a lot in black and white.
Typically, laser printers are the most efficient in terms of ink in that a single toner can last for a few years if you only occasionally print — HP`s Neverstop Laser 1001nw`s toner can last for up to 5,000 printed pages, for example.
Continue to hold the test button for about five seconds. To cold reset an HP Jetdirect external print server, unplug the power cord from the HP Jetdirect print server, then hold down the TEST button (on top of or in back of the HP Jetdirect) for five to 30 seconds while plugging in the power cord.
Most HP Jetdirect print servers have a default IP address of either 192.0. 0.192 or 169.254. x.x. Print a configuration page as described at the beginning of this document, check the TCP/IP status and address, and make sure that the I/O card status reads, Ready.
The embedded Web server provides access to configuration and management pages for the HP Jetdirect print server and the attached network device, such as a printer or multifunction peripheral (MFP) device.
For example, you might see an administrator name of “admin”, which means that Web Jetadmin used the default name and password (admin and admin) to delete the driver. In this case, make sure you have typed the name and password the same in all locations.
In short, yes, laser printers can print on glossy coated paper. As long as the right type of paper is used to allow the toner to fuse with it, great printing results on glossy paper can be achieved with any laser printer.
A laser printer is a popular type of computer printer that uses a non-impact photocopier technology where there are no keys striking the paper. When a document is sent to the printer, a laser beam “draws” the document on a selenium-coated drum using electrical charges.
Therefore raw port 9100 printing – which is supported by almost any network printer – is used as the channel for security analysis with PRET and PFT.
9100 TCP port is used for printing. Port numbers 9101 and 9102 are for parallel ports 2 and 3 on the three-port HP Jetdirect external print servers. 9280 TCP for scanning with the Embedded Web Server (9281 and 9282 for parallel ports 2 and 3 of the multi-port print servers).
All other optional, unnecessary, and rarely used protocols and services like AppleTalk, Telnet, FTP, and SNMP can expose your network to potential attacks and therefore should be turned off. If you`re not using any of the following network ports, you should disable them: Ports 515, 721-731, and 9100.

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HP 4550DN with JetDirect 610N
ANSWER : Unbelievable! I’m an electronics engineer with 30 years experience, and never would have thought that this trick would have worked. But it does! Congratulations to everyone who contributed here – another happy HP2300 plus N610 JetDirect card user!

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HP Color LaserJet 4550DN

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ANSWER : I have the same issue… I’ve tried everything above… I don’t believe it’s dust as this happens on and off occasionally… I think I may need to make a youtube video of me “fixing” this printer! I’m really frustrated with this thing!! If it doesn’t work soon, I’m gonna by the solution in the form of a hammer!

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HP Color LaserJet 4550DN

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ANSWER : To initialize: turn off – Press start and hold down while turning on, release after all three light light, you should see initialize disk hit check, and allow to boot.

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HP Color LaserJet 4550DN