Samsung ML 2950ND User Manual

							Storing the toner cartridge1015. Maintenance
 
Samsung’s printer warranty does not cover damage to the 
machine caused by the use of a refilled, remanufactured, or 
non-Samsung brand toner cartridges.
 
3 
Estimated cartridge life
Estimated cartridge life the life of the toner cartridge (or imaging 
unit) yield depends on the amount of toner that print jobs require. 
The actual print yield may vary depending on the print density of the 
pages you print on, operating environment, percentage of image 
area, printing interval, media type and/or media size. For example, if 
you print a lot of graphics, the consumption of the toner is higher 
and you may need to change the cartridge more often.
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							1025. MaintenanceTips for moving & storing your machine
• When moving the machine, do not tilt or turn it upside down. 
Otherwise, the inside of the machine may be contaminated by 
toner, which can cause damage to the machine or reduce print 
quality.
• When moving the machine, make sure at least two people are 
holding the machine securely. 
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							6. Troubleshooting
This chapter gives helpful information for what to do if you encounter an error.
• Paper feeding problems 104
• Power and cable connecting problems 105
• Printing problems 106
• Printing quality problems 110
• Operating system problems 118
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							1046. TroubleshootingPaper feeding problems
 
 
ConditionSuggested solutions
Paper jams during printing.Clear the paper jam.
Paper sticks together.• Check the maximum paper capacity of the tray .
• Make sure that you are using the correct type of paper.
• Remove paper from the tray and flex or fan the paper.
• Humid conditions may cause some paper to stick together.
Multiple sheets of paper do not feed.Different types of paper may be stacked in the tray. Load paper of only one type, size, and weight.
Paper does not feed into the 
machine.• Remove any obstructions from inside the machine.
• Paper has not been loaded correctly. Remove paper from the tray and reload it correctly.
• There is too much paper in the tray. Remove excess paper from the tray.
• The paper is too thick. Use only paper that meets the specifications required by the machine.
The paper keeps jamming.• There is too much paper in the tray. Remove excess paper from the tray. If you are printing on special 
materials, use the multi-purpose tray (or manual feeder).
• An incorrect type of paper is being used. Use only paper that meets the specifications required by the 
machine.
• There may be debris inside the machine. Open the front cover and remove any debris.
Transparencies stick together in the 
paper exit.Use only transparencies specifically designed for laser printers. Remove each transparency as it exits 
from the machine.
Envelopes skew or fail to feed 
correctly.Ensure that the paper guides are against both sides of the envelopes.
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							1056. TroubleshootingPower and cable connecting problems
 
 
 
ConditionSuggested solutions
The machine is not receiving power, 
or the connection cable between the 
computer and the  machine is not 
connected properly. • Connect the machine to the electr
icity supply first and press the   (Power) button on the control 
panel.
• Disconnect the machine’s  cable and reconnect it.
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							1066. TroubleshootingPrinting problems
 
ConditionPossible causeSuggested solutions
The machine does not 
print.The machine is not receiving power.Check the power cord connections. Check the power switch and the power 
source.
The machine is not selected as the default 
machine.Select your machine as your default machine in Windows.
Check the machine for the following:
• The front cover is not closed. Close the front cover.
• Paper is jammed. Clear the paper jam.
• No paper is loaded. Load paper.
• The toner cartridge is not installed. Install the toner cartridge.
• Make sure the protect cover and sheets are removed from the toner cartridge.
If a system error occurs, contact your service representative.
The connection cable between the 
computer and the machine is not 
connected properly.Disconnect the machine cable and reconnect it.
The connection cable between the 
computer and the machine is defective.If possible, attach the cable to another computer that is working properly 
and print a job. You can also try using a different machine cable.
The port setting is incorrect. Check the Windows printer settings to make sure that the print job is sent 
to the correct port. If the computer has more than one port, make sure that 
the machine is attached to the correct one.
The machine may be configured 
incorrectly. Check the Printing Preferences to ensure that all of the print settings are 
correct.
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							Printing problems1076. Troubleshooting
The machine does not 
print.The printer driver may be incorrectly 
installed.Uninstall and reinstall the machine’s driver.
The machine is malfunctioning. Check the display message on the control panel to see if the machine is 
indicating a system error. Contact a service representative.
The document size is so big that the hard 
disk space of the computer is insufficient 
to access the print job.Get more hard disk space and print the document again.
The output tray is full. Once the paper is removed from the output tray, the machine resumes 
printing.
The machine selects 
print materials from 
the wrong paper 
source.The paper option that was selected in the 
Printing Preferences may be incorrect.For many software applications, the paper source selection is found under 
the Paper tab within the Printing Preferences. Select the correct paper 
source. See the printer driver help screen.
A print job is 
extremely slow.The job may be very complex. Reduce the complexity of the page or try adjusting the print quality 
settings.
Half the page is blank.The page orientation setting may be 
incorrect.Change the page orientation in your application. See the printer driver help 
screen.
The paper size and the paper size settings 
do not match.Ensure that the paper size in the printer driver settings matches the paper 
in the tray.
Or, ensure that the paper size in the printer driver settings matches the 
paper selection in the software application settings you use.
ConditionPossible causeSuggested solutions
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							Printing problems1086. Troubleshooting
The machine prints, 
but the text is wrong, 
garbled, or 
incomplete.The machine cable is loose or defective. Disconnect the machine cable and reconnect. Try a print job that you have 
already printed successfully. If possible, attach the cable and the machine 
to another computer that you know works and try a print job. Finally, try a 
new machine cable.
The wrong printer driver was selected. Check the applicatinon’s printer selection menu to ensure that your 
machine is selected.
The software application is 
malfunctioning.Try printing a job from another application.
The operating system is malfunctioning. Exit Windows and reboot the computer. Turn the machine off and back on 
again.
If you are in a DOS environment, the font 
setting for your machine may be set 
incorrectly.See "Changing the font setting" on page 77.
Pages print, but they 
are blank.The toner cartridge is defective or out of 
toner.Redistribute the toner, if necessary. 
If necessary, replace the toner cartridge.
The file may have blank pages. Check the file to ensure that it does not contain blank pages.
Some parts, such as the controller or the 
board, may be defective.Contact a service representative.
ConditionPossible causeSuggested solutions
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							Printing problems1096. Troubleshooting
 
The machine does not 
print PDF files 
correctly. Some parts 
of graphics, text, or 
illustrations are 
missing.Incompatibility between the PDF file and 
the Acrobat products.Printing the PDF file as an image may enable the file to print. Turn on Print 
As Image from the Acrobat printing options. 
 
It will take longer to print when you print a PDF file as an image.
 
The print quality of 
photos is not good. 
Images are not clear.The resolution of the photo is very low.  Reduce the photo size. If you increase the photo size in the software 
application, the resolution will be reduced. 
Before printing, the 
machine emits vapor 
near the output tray.Using damp paper can cause vapor during 
printing.This is not a problem. Just keep printing.
The machine does not 
print special-sized 
paper, such as billing 
paper.Paper size and paper size setting do not 
match.Set the correct paper size in the Custom in Paper tab in Printing 
Preferences.
The printed billing 
paper is curled.The paper type setting does not match. Change the printer option and try again. Go to Printing Preferences , click 
Paper tab, and set type to Thick.
ConditionPossible causeSuggested solutions
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							1106. TroubleshootingPrinting quality problems
If the inside of the machine is dirty or paper has been loaded improperly, there might be a reduction in print quality. See the table below to 
clear the problem. 
 
ConditionSuggested Solutions
Light or faded print• If a vertical white streak or faded area appears on the page, the toner supply is low. Install a new toner cartridge.
• The paper may not meet paper specifications; for example, the paper may be too moist or rough.
• If the entire page is light, the ting is too low or the toner save mode is on. Adjust the print resolution and turn 
the toner save mode off. See the help screen of the printer driver.
• A combination of faded or smeared defects may indicate that the toner cartridge needs cleaning. Clean the 
inside of your machine.
• The surface of the LSU part inside the machine may be dirty. Clean the inside of your machine. If these steps do 
not correct the problem, contact a service representative.
The top half of the paper is 
printed lighter than the 
rest of the paperThe toner might not adhere properly to this type of paper.
• Change the printer option and try again. Go to Printing Preferences , click the Paper tab, and set the paper 
type to Recycled.
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