How to resolve hp laser printer erro code 49.4C2F

The scanner part of the printer is messed up. HP says "LSU error: #04-001. Please turn off then on." LSU = Laser Scanning Unit.

please would write English so can i understand you
i can help you do not worry , just go to Google translator covert your message to English , then i will reply you with propor answer

Hope help you

Error says that printer has a bad laser scanner assembly. Call a tech to make sure.

51.XX is a laser/scanner error.
From the operator panel, get to the DIAGNOSTICS menu.
Run the laser/scanner motor component test.
Listen for the motor. You should be able to hear it rotating.
You are probably going to need to have the laser/scanner assembly replaced.

Esse erro ? um erro de Laser. Existe um firmware que resolve esse problema.

The 50.2 code on nearly all HP laser based machines including your M2727nf means you have a fuser error. The fuser unit is the assembly that heats up and "fuses" the toner onto the paper. There are a few things you can try including, power cycle the printer and see whether the code resets or try reseating the Fuser Unit. Neither of these will resolve the issue in most cases. Most of the time fuser unit replacement is necessary.
Here is a link for you to see pricing and a picture for your fuser unit. You may want to just buy your own fuser and replace it if your are mechanically inclined. If not you can have a local printer repair shop replace it for you. At least they won't rip you off on the price of the fuser unit.
http://www.precisionroller.com/search.php?q=m2727nf+fuser
Good Luck and Thank You for using Fixya.
WheatlandServices

The 50.2 code on nearly all HP laser based machines including your 4700 means you have a fuser error. The fuser unit is the assembly that heats up and "fuses" the toner onto the paper. There are a few things you can try including, power cycle the printer and see whether the code resets or try reseating the Fuser Unit. Neither of these will resolve the issue in most cases. Most of the time fuser unit replacement is necessary.
Here is a link for you to see pricing and a picture for your fuser unit. You may want to just buy your own fuser and replace it if your are mechanically inclined. If not you can have a local printer repair shop replace it for you. At least they won't rip you off on the price of the fuser unit. Note that there may be some cheaper prices out there on this unit.
http://www.precisionroller.com/search.php?q=hp+4700+fuser Good Luck and Thank You for using Fixya.
WheatlandServices

Go to HP Support & Drivers 1

Hi;

if you HP 1050C Plus display System Error 04CXX Try the following Steps to resolved an error:

1.)Press ENTER and switch the printer OFF. Remove the Hard Disk Drive (if installed) and make sure that the EIO card is installed
correctly by pushing it firmly inwards and checking that the two installation screws are completely tightened. Switch the printer
ON again. If this error code continues to appear then replace the EIO card.

2.)If this Error Code disappeared after removing the Hard Disk Drive, then switch the Printer OFF and reinstall the Hard Disk Drive, making sure that the two installation screws are completely tightened. Switch the Printer ON again. If this Error Code reappears, then the Hard Disk Drive could be faulty.
Replace the Hard Disk Drive.


3.)If this system error continues to appear after replacing the EIO card or the Hard Disk Drive, then replace the Electronics Module...

replace hard disk drive