Samsung ML 1645 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 the jammed paper, be careful not to touch the 
heat roller (located underneath the inner cover). It is hot and 
could cause burns!
• The top and inner cover themselves may also be hot due to 
the heat roller. Allow the machine to cool before opening the 
covers.
Failed pages will not reprint. Try printing the pages.
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							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 
corrected. If the problem persists, call for service.
Paper feeding 
For ML-2240 Series, if you have installed the dust cover, remove the 
dust cover before opening the front cover. 
• Do not touch the green surface (or sky blue), the OPC drum, 
with your hands or any other material. Use the handle on the 
cartidge to avoid touching this area.
• Be careful not to expose the green surface (or sky blue), the 
OPC drum, into light.This will cause damage to the OPC 
drum.Cover the toner cartridge’s OPC drum with paper to 
avoid damaging it from the light. 
• Do not turn the toner cartridge over. 
CONDITIONSUGGESTED SOLUTIONS
Paper is jammed 
during printing.Clear the paper jam. See page 30.
Paper sticks 
together.• Ensure there is not too much paper in the tray. 
The tray can hold up to 150 sheets of paper, 
depending on the thickness of your paper.
• Make sure that you are using the correct type 
of paper. See page 23.
• 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.
• If multiple sheets have caused a paper jam, 
clear the paper jam. See page 30.
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. See page 18.
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							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 paper guides are against both sides of 
the envelopes.
CONDITIONSUGGESTED SOLUTIONS
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 printer.Select Samsung ML-2240 
Series as your default printer 
in your Windows.
• Check the machine for the following:
• The front cover is not closed. Close the cover.
• Paper is jammed. Clear the paper jam. See page 
30.
• No paper is loaded. Load paper. See page 21.
• The toner cartridge is not installed. Install 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 printer 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 printer cable.
The port setting is 
incorrect.Check the Windows printer 
setting 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 printer properties 
to ensure that all of the print 
settings are correct. 
The printer driver 
may be incorrectly 
installed.Repair the printer software. 
See the Software section.
The machine is 
malfunctioning.Check the LEDs status on 
the control panel to see if the 
machine is indicating a 
system error.
The machine 
does not print 
special sized 
paper such as a 
billing paper. Paper size and 
paper size setting do 
not match.Set the correct paper size in 
the Custom in the Paper tab 
in the printer properties.  See 
Software section
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							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 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.
The machine 
prints, but the 
text is wrong, 
garbled, or 
incomplete.The printer cable is 
loose or defective.Disconnect the printer cable 
and reconnect. Try a print job 
that you have already printed 
successfully. If possible, 
attach the cable and the 
machine to another computer 
and try a print job that you 
know works. Finally, try a 
new printer cable.
The wrong printer 
driver was selected.Check the application’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 then back on again.
Pages print, but 
are blank.The toner cartridge 
is defective or out of 
toner.Redistribute the toner, if 
necessary. See page 27.
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
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.
Your machine 
has an odd smell 
during initial 
use.The oil used to 
protect the fuser is 
evaporating. It is a temporary issue.
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.
CONDITIONPOSSIBLE 
CAUSESUGGESTED SOLUTIONS
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							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 paper may not meet paper specifications; 
for example, the paper is too moist or too 
rough. See page 18.
• If the entire page is light, the print resolution 
setting is too low. Adjust the print resolution. 
See the help screen of the printer driver.
• A combination of faded or smeared defects 
may indicate that the toner cartridge needs 
cleaning.
• The surface of the LSU part inside the machine 
may be dirty. Clean the LSU by opening and 
closing the front cover several times and if the 
problem still occurs call the contact a service 
representative.
Toner specks• The paper may not meet specifications; for 
example, the paper is too moist or too rough. 
See page 18.
• The paper path may need cleaning. See 
Cleaning the inside on page 25.
DropoutsIf faded areas, generally rounded, occur randomly 
on the page:
• A single sheet of paper may be defective. Try 
reprinting the job.
• The moisture content of the paper is uneven or 
the paper has moist spots on its surface. Try a 
different brand of paper. See page 18.
• The paper lot is bad. The manufacturing 
processes can cause some areas to reject 
toner. Try a different kind or brand of paper.
• Change the printer option and try again. Go to 
printer properties, click Paper tab, and set type 
to Thick. Refer to the Software section for 
details.
If these steps do not correct the problem, contact a 
service representative.
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White Spots White spots appear on the page:
• The paper is too rough and a lot of dirt from the 
paper falls to the inner devices within the 
machine, which means the transfer belt may be 
dirty. Clean the inside of your machine. Contact 
a service representative.
• The paper path may need cleaning. Contact a 
service representative.
Vertical linesIf white vertical streaks appear on the page:
• The surface of the LSU part inside the machine 
may be dirty. Clean the LSU by opening and 
closing the front cover several times and if the 
problem still occurs contact a service 
representative.
Black backgroundIf the amount of background shading becomes 
unacceptable:
• Change to a lighter weight paper. See page 18.
• Check the machine’s environment: very dry 
(low humidity) or high humidity (higher than 
80% RH) conditions can increase the amount 
of background shading.
• Remove the old toner cartridge and install a 
new one. See page 28.
Toner smear• Clean the inside of the machine. See page 25.
• Check the paper type and quality. See page 18.
• Remove the toner cartridge and install a new 
one. See page 28.
Vertical repetitive 
defectsIf marks repeatedly appear on the printed side of 
the page at even intervals:
• The toner cartridge may be damaged. If a 
repetitive mark occurs on the page, print a 
cleaning sheet several times to clean the 
cartridge. After the printout, if you still have the 
same problems, remove the toner cartridge and 
install a new one. See page 28.
• Parts of the machine may have toner on them. 
If the defects occur on the back of the page, the 
problem will likely correct itself after a few more 
pages.
• The fusing assembly may be damaged. 
Contact a service representative.
CONDITIONSUGGESTED SOLUTIONS
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							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 background scatter covers the entire surface 
area of a printed page, adjust the print 
resolution through your software application or 
the printer properties.
Misformed 
characters• If characters are improperly formed and 
producing hollow images, the paper stock may 
be too slick. Try a different paper. See page 18.
Page skew• Ensure that the paper is loaded properly.
• Check the paper type and quality. See page 18.
• Ensure that the paper or other material is loaded 
correctly and the guides are not too tight or too 
loose against the paper stack.
Curl or wave• Ensure that the paper is loaded properly.
• Check the paper type and quality. Both high 
temperature and humidity can cause paper curl. 
See page 18.
• Turn over the stack of paper in the tray. Also try 
rotating the paper 180° in the tray.
Wrinkles or creases• Ensure that the paper is loaded properly.
• Check the paper type and quality. See page 18.
• Turn over the stack of paper in the tray. Also try 
rotating the paper 180° in the tray.
CONDITIONSUGGESTED SOLUTIONS
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Back of printouts 
are dirty• Check for leaking toner. Clean the inside of the 
machine. See page 25.
 Black pages• The toner cartridge may not be installed 
properly. Remove the cartridge and reinsert it.
• The toner cartridge may be defective and need 
replacing. Remove the toner cartridge and install 
a new one. See page 28.
• The machine may require repair. Contact a 
service representative.
Loose toner• Clean the inside of the machine. See page 25.
• Check the paper type and quality. See page 18.
• Remove the toner cartridge and install a new 
one. See page 28.
• If the problem persists, the machine may require 
repair. Contact a service representative.
Character VoidsCharacter voids are white areas within parts of 
characters that should be solid black:
• If you are using transparencies, try another 
type of transparency. Because of the 
composition of transparencies, some character 
voids are normal. 
• You may be printing on the wrong surface of 
the paper. Remove the paper and turn it 
around. 
• The paper may not meet paper specifications. 
See page 18.
Horizontal stripesIf horizontally aligned black streaks or smears 
appear:
• The toner cartridge may be installed 
improperly. Remove the cartridge and reinsert 
it.
• The toner cartridge may be defective. Remove 
the toner cartridge and install a new one. See 
page 28.
• If the problem persists, the machine may 
require repair. Contact a service 
representative.
CONDITIONSUGGESTED SOLUTIONS
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							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 
occurs.Your machine is probably being used at an altitude 
of 1,000 m (3,281 ft) or above.
The high altitude may affect the print quality such 
as loose toner or light imaging. You can set this 
option through Paper or Printer tab in printer 
driver’s properties.
CONDITIONSUGGESTED SOLUTIONS
“File in Use” 
message appears 
during installation.Exit all software applications. Remove all 
software from the StartUp Group, then restart 
Windows. Reinstall the printer driver.
“General Protection 
Fault”, “Exception 
OE”, “Spool32”, or 
“Illegal Operation” 
messages appear.Close all other applications, reboot Windows 
and try printing again.
“Fail To Print”, “A 
printer timeout error 
occurred.” messages 
appear.These messages may appear during printing. 
Just keep waiting until the machine finishes 
printing. If the message appears in ready mode 
or after printing has been completed, check the 
connection and/or whether an error has 
occurred.
Refer to the Microsoft Windows documentation that came with your 
computer for further information on Windows error messages.
CONDITIONSUGGESTED SOLUTIONS
CONDITIONSUGGESTED SOLUTIONS
The machine does 
not print.• Check if the printer driver is installed in your 
system. Open Unified Driver Configurator 
and switch to the Printers tab in Printers 
configuration window to look at the list of 
available printers. Make sure that your 
machine is displayed on the list. If not, 
please, invoke Add new printer wizard to set 
up your device. 
• Check if the printer is started. Open Printers 
configuration and select your machine on the 
printers list. Look at the description in the 
Selected printer pane. If its status contains 
“(stopped)” string, please, press the Start 
button. After that normal operation of the 
printer should be restored. The stopped 
status might be activated when some 
problems in printing occurred. 
• Check if your application has special print 
option such as “-oraw”. If “-oraw” is specified 
in the command line parameter then remove 
it to print properly. For Gimp front-end, select 
“print” -> “Setup printer” and edit command 
line parameter in the command item.
The machine does 
not print whole pages 
and its output is half 
page printed.The problem is solved in AFPL Ghostscript v. 
8.52 or above. Download the latest version of 
AFPL Ghostscript from http://sourceforge.net/
projects/ghostscript/ and install it to solve this 
problem.
I encounter error 
“Unable to open mfp 
port device file!” 
when printing a 
document.Please avoid changing print job parameters (via 
LPR GUI, for example) while a print job is in 
progress. Known versions of CUPS server 
break the print job whenever print options are 
changed and then try to restart the job from the 
beginning. Since Unified Linux Driver locks mfp 
port while printing, the abrupt termination of the 
driver keeps the port locked and therefore 
unavailable for subsequent print jobs. If this 
situation occurred, please, try to release the 
mfp port.
Refer to Linux User’s Guide that came with your computer for further 
information on Linux error messages.
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							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 the spooler in Mac 
OS 10.3.2.Update your Mac OS to OS 10.3.3. or 
higher.
Some letters are not 
displayed normally 
during the Cover page 
printing.This problem is caused because Mac OS 
cannot create the font during the Cover 
page printing. English alphabet and 
numbers are displayed normally at the 
Cover page.
Refer to Mac OS User’s Guide that came with your computer for 
further information on Mac OS error messages.
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							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 following items will need to be replaced after the specified 
number of pages, or when the life span of each item has expired. 
 
We highly recommend that this maintenance be performed by an authorized 
service provider, dealer or the retailer where you bought the machine. The 
warranty does not cover the replacement of the maintenance parts after 
their lifespan.
HOW TO PURCHASE
To order Samsung-authorized supplies or accessories, contact your local 
Samsung dealer or the retailer where you purchased your machine, or  visit 
www.samsung.com/supplies 
and select your country/region to obtain 
information on calling for technical support.
The optional parts or features may differ by countries. Contact your sales representatives whether the part you want is available in your country.
TYPEAVERAGE YIELDPART NUMBER
Standard yield
a 
toner unit
a. Declared yield value in accordance with ISO/IEC 19752.Average cartridge 
yield: 1,500 standard 
pages MLT-D108S (Black)
Region Ab
MLT-D1082S (Black)
b.Region A:Albania, Austria, Belgium, Bosnia, Bulgaria, Croatia, Cyprus, 
Czech Republic, Denmark, Finland, France, Germany, Greece, 
Hungary, Italy, Macedonia, Netherlands, Norway, Poland, Portugal, 
Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, UK. 
When you purchase a new toner cartridge or supplies, you must 
purchase them in the same country you have purchased your 
machine.
Otherwise, the toner cartridge or supplies will be incompatible with 
your machine since the configuration of the toner cartridge or 
supplies vary depending on the countries.
ITEMSYIELD (AVERAGE)
Pick-up rollerApprox. 50,000 pages
Fuser unitApprox. 50,000 pages
Transfer rollerApprox. 50,000 pages
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							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
OS 
compatibilityb• Windows: 2000/XP/2003/Vista/2008/7/Server 2008 
R2
• Linux: RedHat 8.0~9.0, Mandrake 9.2~10.1, SuSE 
8.2~9.2, Fedra Core 1~4, Ubuntu 6.0
• Macintosh: Mac OS 10.3~10.6
InterfaceFull speed USB 2.0
Paper input 
capacityTray: 150 sheets for plain paper, 75 g/m2 (20 lb bond)
For details about paper input capacity, see 19 page.
Paper output 
capacityFace down: 50 sheets 75 g/m2 (20 lb bond)
Power ratingAC 110 - 127 V or AC 220 - 240 V
See the Rating label on the machine for the correct 
voltage, frequency (hertz) and type of current for your 
machine.
Power 
consumption• Average operating mode:Less than 300 W
• Ready mode:Less than 70 W
• Sleep mode: Less than 6W
• Power off mode:0W
Noise Levelc• Ready mode:Less than 26 dBA
• Printing mode:Less than 50 dBA
Warm-up timeLess than 35 seconds
Operating 
environmentTemperature: 10 to 32.5 °C (50 to 90 °F)
Humidity: 20 to 80% RH
Toner 
cartridge lifedAverage cartridge yield: 1,500 standard pages
(Shipped with 700 pages toner cartridge./
Chinese ships with 1,500 pages toner cartridge.)
e
External 
dimension
(W x D x H)350.5 x 298.5 x 212 mm 
(13.8 x 11.75 x 8.35 inches)
Weight
(Including 
consumables)5.66 Kg (12.47 lb)
Package 
weightPaper: 1 Kg (2.2 lbs)
Plastic: 0.19 Kg (0.42 lbs)
Fusing 
temperature180 °C (356 °F)
a. It will be affected by operating system used, computing performance, 
application software, connecting method, media type, media size and 
job complexity.
b. Visit www.samsungprinter.com to download the latest software 
version.
c. Sound Pressure Level, ISO 7779
d. Declared yield value in accordance with ISO/IEC 19752. The number 
of pages may be affected by operating environment, printing interval, 
media type, and media size.
e. It varies depending on the product configuration.
ITEMDESCRIPTION
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