Faint printing on samsung ml7140 laser printer -- even when cartridge is new

removed the toner and shaken it and then replace it.then it prints normally. or problem not solved you have to replace new toner.

According to the service manual for problems with light print image, the cause can be the Developers or High Voltage Power Supply (HVPS). Other possible causes are given as: Developer roller is stained when the toner or developer cartridge is almost consumed. Ambient temperature is below 10 degrees Centigrade. Bad contacts with the HVPS or abnormal output from the HVPS. To replace the Developers you would need to purchase a replacement Imaging Kit CLP-R300A. Any problems in the HVPS would require a factory repair.

Hi,
First make sure that the cartridges are OK and have enough toner. (Remove the cartridges and inspect it physically, shake it horizontally so that the toner inside the cartridge is evenly distributed) If it happens even if the cartridge has enough toner or after replacing the toner cartridge, it is most likely be due to dust accumulation at the laser reflecting mirrors inside the printers, which partially blocks laser beams and results in faint print. Therefore the printer requires cleaning/ servicing by a professional.

GoodLuck!
Dont forget to appreciate the solution if I could have been of any help!
CreativeTECH

A laser printer needs toner to print, when this runs out the printer will print either blank or very faint images.
You need to replace the toner cartridge with a new one or a re-manufactured toner cartridges. Re-manufactured toner cartridges are cheaper than new toner cartridges for your model printer.

This could be the laser unit 'window' being dirty, or contaminated with toner.

Please Chack The Cartridge maybe it is not Orignal

Try checking out your toner cartridge on other printer or another toner cart on your printer if you get the print fine on your printer then your toner is troubling or else the mainboard of your printer is problem which is not allowing proper flow of toner on paper.

You have to wiggle the toner cassette gently back and forth in a horizontal position like ten cycles before installing the cartridge in the printer. Otherwise the toner will not feed properly.

Also make sure to clean the scanner window and clean the corona wire at every toner change to prevent problems, check out the instruction manual on how to do this.

Good luck!

Was the toner remanufactured/ compatible?
Sounds to me like the doctor blade in the cartridge is 'gummed' up and not allowing the toner to flow evenly across the Developer roller......try another cartridge

The printing area inside is defected.If you repair,you have to change the printing side fully.Better get a new one.