My brother j430w is a bad print quality how to solve the problem

The 49 error code normally means ambient temperature too low. Is your printer in a very cold location? If so, try taking the printer to a warmer location and leaving for a few hours to warm all the components, then power on and try a nozzle (print quality) test from the maintenance menu.

needs replacement the ink observer

This is cause by minor discrepancies in the printhead. Normally this is caused by blocked jets on the inkjet printhead. Depending on the extent of the lines it may only be one jet blocked or more if there are lots of noticable lines.

Try doing a printhead clean to clear the jets and check the print quality printout.

Due to the way these machines print it could also be just as simple as the normal printing discrepancy. These machines are cheap and made that way. If you are looking for solid black in the black areas then you may need to change the settings on the printer to photo quality or replace the cheap brother with a more expensive machine.

Check the green paper-size end guide inside the paper tray, it may be too far forward. There's a mark for letter-size paper (LTR) and I have my guide set right at the mark even though it seems it ought to be shorter. Be sure your paper is back up against the mark. You might also buy some different paper and see if that's the problem. Sometimes cheap paper will not feed right (I use Staples copy paper in my ink jet and laser printers).

The print head circuit or cable is malfunctioning or faulty. Replace the printer. I would suggest the Brother MFC-j450dw/j470dw printer as it is an upgraded and newer version of the j430w. Good luck!

Please check this out also. It solved the problem for me.
http://support.brother-usa.com/ModelDocuments/Technical/Service%20Updates/SU_F1379.PDF

http://www.brother-usa.com/downloads/iphone-ipod-printer.aspx#.UoYpNsTTySo

how to reset ink absorber full with brother mfc j430w

dear sir, My printer Brother MFC J430 shows unable to clean 49 in display I have found any solve or suggestion in youtube / Google please suggest me.
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BAHAR LASKAR
SILCHAR, ASSAM

carriage PCB on print head or main PCB defective