Notebook hp g42
SOURCE: erro no fusor da hp
it seems to me that the fuser is blown, and needs to be replaced, but to repair this requires a dissaembly of the fuser, its the themister and the element that is blown.
not worth it, replace it.
SOURCE: erro 50.7 da hp
50.7 error is a problem with the pressure release mechanism for the fuser. This is the device that backs up the fuser to aid in removing paper jams. I would remove the fuser, and reinstall. to remove the fuser, turn the printer around so you are facing the back. Drop the back door down and then press on the left side where the door pivots. Slip the door out and you will see 2 blue handles on the fuser, squeeze these while pulling out on the fuser.
SOURCE: Como resolver o problema da
Hello,
in the case of error, the first thing to do is to reset the printer. Follow the below steps to reset the printer:
Without turning off the product, disconnect the USB cable from the rear of the product.
Remove the cartridges from the product.
Wait for the 'Insert Cartridges ' message to display on the control panel.
Disconnect the power cord from the back of the product.
Wait 60 seconds.
Reconnect the power cord. If the product does not automatically turn on, press the Power button.
Reinsert the cartridges, and then close any open doors on the product.
If you receive a prompt to print a calibration page, do so.
Reconnect the USB cable to the rear of the product, and then try printing again.
Or, completely uninstall the printer from the system, re-install it, then try again. I hope you have the printer's software.
First, go to Start > control panel > printers.
Right click on each printer icon you see, scroll to delete and click. Make sure all the printer there are deleted.
Go back to control panel, click on program and features (for windows vista/7) or Add/Remove Programs (win xp).
Disconnect the printer cord from the computer.
Uninstall every driver/software that is associated with the printer.
Restart your computer.
After your computer has been restarted, install the printer driver afresh and connect the printer to the computer.
If this doesn't solve the problem, you will have to download Hp diagnostic utility on your your computer,install is on your computer and it will help to detect and solve the problem.
Visit the hp link below, read all the information on the page and download the diagnostic tool from the page.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02114788&tmp_task=solveCategory&lc=en&dlc=&cc=us&product=441125
Good luck.
SOURCE: modelo da impressora,HP laserJet M1120
little bit I under stood your language, there is scanner error 22, remove flat bed glass, remove scan head, check mechanism observe any breakage, replace it mechanism, if no replace entire scanner head..see the test shot. 
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