Samsung ML 1640 User Manual

31 _Troubleshooting
2.Open the top cover and the inner cover.
3.Loosen the paper if it is caught in the heat rollers. Then pull the paper 
gently out. 
 
4.Close the inner cover and the top cover. Printing resumes automatically. 
In the paper feed area
1.Remove any misfeed paper by pulling it out by the visible edge from the 
tray. Make sure that all of the paper is properly aligned in the tray.
2.Open 
and close the front or top cover to resume printing the 
document from failed pages.
• When removing...

Troubleshooting_32
Around the toner cartridge
1.Open the front cover.
2.Pull the toner cartridge out and remove it from the machine.3.Gently pull the paper toward you.
4.Check that there is no other paper in the machine.
5.Reinstall the toner cartridge and close the front cover. Your machine 
resumes printing the document from failed pages.
SOLVING OTHER PROBLEMS
The following chart lists some conditions that may occur and the 
recommended solutions. Follow the suggested solutions until the problem is...

33 _Troubleshooting
Printing problems
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, load only one size of print 
media at a time in the tray.
• An incorrect type of paper is being used. Use 
only paper that meets the specifications 
required by the machine. See page 19.
• There may be debris inside the machine. Open 
the front cover and remove the debris.
Envelopes skew or 
fail to feed correctly.Ensure the...

Troubleshooting_34
The machine 
selects print 
materials from 
the wrong paper 
source.The paper source 
selection in the 
printer properties 
may be incorrect.For many software 
applications, the paper 
source selection is found 
under the Paper tab within 
the printer properties. 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...

35 _Troubleshooting
Printing quality problems
If the inside of the machine is dirty or paper has been loaded improperly, 
you may notice a reduction in print quality. See the table below to clear the 
problem.
CONDITIONSUGGESTED SOLUTIONS
Light or faded printIf a vertical white streak or faded area appears on 
the page:
• The toner supply is low. You may be able to 
temporarily extend the toner cartridge life. See 
page 27. If this does not improve the print 
quality, install a new toner cartridge.
• The...

Troubleshooting_36
Background scatterBackground scatter results from bits of toner 
randomly distributed on the printed page. 
• The paper may be too damp. Try printing with a 
different batch of paper. Do not open packages 
of paper until necessary so that the paper does 
not absorb too much moisture.
• If background scatter occurs on an envelope, 
change the printing layout to avoid printing over 
areas that have overlapping seams on the 
reverse side. Printing on seams can cause 
problems.
• If...

37 _Troubleshooting
Common Windows problemsCommon Linux problems
CurlIf the printed paper is curled or paper does not feed 
into the machine:
• Turn over the stack of paper in the tray. Also try 
rotating the paper 180° in the tray. 
• Change the printer option and try again. Go to 
printer properties, click Paper tab, and set type 
to Thin. Refer to the Software section for 
details.
An unknown image 
repetitively appears 
on a next few 
sheets or loose 
toner, light print, or 
contamination...

Troubleshooting_38
Common Macintosh problems
CONDITIONSUGGESTED SOLUTIONS
The machine does not 
print PDF file 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 
solve this problem. 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 document has 
printed, but the print job 
has not disappeared 
from...

39 _Ordering supplies and accessories
ordering supplies and accessories
This chapter provides information on purchasing cartridges and accessories available for your machine.
This chapter includes:
• Supply• Maintenance parts
SUPPLY
When the toner runs out, you can order the following type of toner cartridge 
for your machine:
MAINTENANCE PARTS
To avoid print quality and paper feed problems resulting from worn parts, 
and to maintain your machine in top working condition the following 
condition, the...

Specifications_40
specifications
This chapter guides you about this machine’s specifications such as various features.
This chapter include:
• ML-1640 Series specifications • ML-2240 Series Specifications
ML-1640 SERIES SPECIFICATIONS
ITEMDESCRIPTION
Printing 
methodLaser beam printing
Printing speeda Up to 16 ppm (A4), 17 ppm (Letter)
First print out 
time• From ready: Less than 10 seconds
• From coldboot: Less than 30 seconds
Print 
resolutionMax. 1,200 x 600 dpi effective output
Printer 
languageSPL...