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It could be the DC controller (C2037-69004) or you could have been silly and failed to pull the plastic toner tape out of the cartridge when it was replaced.
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porourke61

5500-51.2Y.png

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Thanks for your help. &nbsp;I considered replacing the controller but checked the connectors(ribbon cable to controller was not secured properly)
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on HP 5500 Color Laserjet - error 51.2Y along with a grinding noise<br />
<br />
Replaced laser scanner assembly - still received the 51.2Y error but no longer get the grinding noise<br />
<br />
swapped the laser scanner assembly with the one below - still received the 51.2Y error and no grinding noise. <br />
<br />
What else can I do to troubleshoot? <br />
<br />
Thanks in advance for any direction
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on HP 5500 Color Laserjet - error 51.2Y along with a grinding noise

Replaced laser scanner assembly - still received the 51.2Y error but no longer get the grinding noise

swapped the laser scanner assembly with the one below - still received the 51.2Y error and no grinding noise. 

What else can I do to troubleshoot? 

Thanks in advance for any direction

HP 5500 Color Laserjet - error 51.2Y

A printer is a peripheral which makes a persistent human readable representation of graphics or text on paper or similar physical media. Traditional printers are being used more for special purposes, like printing photographs or artwork, and are no longer a must-have peripheral; 3D printing has become an area of intense interest, allowing the creation of physical objects. An image scanner is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Hand-held scanners, where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering, test and measurement, orthotics, gaming and other applications.

Printers and Scanners

An assembly language (or assembler language) is a low-level programming language for a computer or other programmable device in which there is a very strong (generally one-to-one) correspondence between the language and the architecture's machine code instructions. Each assembly language is specific to a particular computer architecture, in contrast to most high-level programming languages, which are generally portable across multiple architectures, but require interpreting or compiling. Assembly language is converted into executable machine code by a utility program referred to as an assembler; the conversion process is referred to as assembly, or assembling the code.