HP 4600 printer with error message 51.2M and loud noise when calibrating. Any solution?

see the list of errors here HP Color LaserJet 4600 and 4650 Series Printers Numerical Printer Messages

49.xxxx refers to corrupted data. loose cable; bad hub/switch/router/cable. Bad memory

HP Color LaserJet 4600 and 4650 Series Printers Numerical Printer Messages

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.


51.XY
PRINTER ERROR
For help press
alternates with
51.XY
PRINTER ERROR
A printer error has occurred.
X Description
1 beam detect error
2 laser error
Y Description
0 no color / black
1 Press to continue.
2 Turn the printer off and then on.
3 Reseat the connectors between the
laser/scanner and DC controller PCA
(J1009 - J1012).
4 Replace the defective laser/scanner
assembly. Calibrate the printer after
replacing the laser/scanner.

Just we cant judge reading the sound if we hear the sound we can say the fault, any how check fuser assembly seated properly or not? open side doors then observe where you are getting the sound..

This error due to black scanner scanner no 1,take the help of expert or open with common sence first remove all the covers remove the formatter from back side then you will find the laser scanner ,you will find the two lever locks(arms)left & right.
pull out the no 1 scaner open the cover & clean the scanner internally with soft cotton & also clean the spendel motor phase. I think your problem will be resolved.Dont forget to calibrate the printer at least three times. thanks reply if resolved

possible fuser issue..in the control panels.. you can go into diagnostics and actually run individual components.. give that a tray..

Sorry, my friend, there is no way to force it go B/W and override the error message.

errors in the 51 range are laser scanner errors, it's saying either the laser is out or the scanner motor is not turning, or not turning fast enough. A good shop repair.

Replace the Jet direct card in it. I had a similar problem and replaced the Jet Direct card, all was good never had that problem again.

It is a fan failure

Have you tried upadtaing the firmware?