51.20 51.21 51.22 51.23 Error on HP Color LaserJet 4610 4650
Any of these error codes (51.20 51.21 51.22 51.23) points to a failure with one of the laser scanner assemblies on the HP Color LaserJet 4610 an 4650 series. To solve these error codes, replace the corresponding laser scanner. Sometimes when the laser scanner fails you will also hear loud noises (often higher-pitched noises like screeching sounds); the noises can be another sign that the laser scanner needs replacing.
The laser scanner is a common failure part on this model printer. There are four laser scanners in this model, one for each toner color (cyan, magenta, yellow, black). The actual assemblies are the same part for each color.
The error code meanings are as follows:
51.20 points to the Black laser scanner
51.21 points to the Cyan laser scanner
51.22 points to the Magenta laser scanner
51.23 points to the Yellow laser scanner
You can purchase a replacement laser scanner here:
Purchase here: Laser Scanner Assembly for HP Color LaserJet 4610 4650 series
Call us with any questions -- 866-352-7108.