Samsung SCX 4300 User Manual

							Maintenance
8.4
CAUTION: Do not touch the green underside of the toner 
cartridge. Use the handle on the toner cartridge to avoid 
touching this area. 
4Hold the toner cartridge by the handle and slowly insert 
the toner cartridge into the opening in the machine.
5Tabs on the sides of the toner cartridge and corresponding 
grooves within the machine will guide the toner cartridge 
into the correct position until it locks into place completely.
6Close the front cover. Make sure that the cover is securely 
closed.
Replacing the toner cartridge
When the toner cartridge is completely empty:
• The printer stops printing. 
• The Smart Panel program window appears on the computer 
telling you that the toner cartridge is empty.
•The 
Status LED lights red. 
At this stage, the 
toner cartridge needs to be replaced. For 
order information for toner cartridges, see page 7.1.
1Pull the toner cartridge out.
2Remove the new toner cartridge from its bag.
3Roll the toner cartridge 5 or 6 items to distribute the toner 
evenly inside the toner cartridge.
Thoroughly rolling the toner cartridge will assure 
maximum copies per toner cartridge.
4Remove the paper protecting the toner cartridge.
NOTE: If toner gets on your clothing, wipe it off with a dry 
cloth and wash clothing in cold water. Hot water sets toner into 
fabric.
CAUTION: Do not touch the green underside of the toner 
cartridge. Use the handle on the toner cartridge to avoid 
touching this area. 
5Hold the toner cartridge by the handle and slowly insert 
the toner cartridge into the opening in the machine. 
6Tabs on the sides of the toner cartridge and corresponding 
grooves within the machine will guide the toner cartridge 
into the correct position until it locks into place completely.
7Close the front cover. Make sure that the cover is securely 
closed.
Consumable and replacement 
parts
From time to time, you needs to replace the toner cartridge, 
roller, and fuser unit to maintain top performance and to avoid 
print quality problems and paper feed problems resulting from 
worn parts. The Smart Panel program window will appear on 
the computer, indicating which item needs to be replaced.
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							Maintenance
8.5
The following items should be replaced after you have printed 
the specified number of pages, or when the life span of each 
item has expired. The Smart Panel program window will appear 
on the computer, indicating which item needs to be replaced.
To purchase consumable and replacement parts, contact your 
Samsung dealer or the retailer where you bought your 
machine. We strongly recommend that these items be installed 
by a trained service professional, except for the toner cartridge 
(see page 8.4).
ItemsYield (Average)
Transfer rollerApprox. 50,000 pages
Fuser unit 
Approx. 50,000 pages
Paper feeding roller
Approx. 50,000 pages
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							Troubleshooting
9.1
9Troubleshooting
This chapter gives helpful information for what to do if you 
encounter an error.
This chapter includes:
• Clearing paper jams
• Understanding the Status LED
• Understanding display messages
• Solving other problems
Clearing paper jams
When a paper jam occurs, Paper Jam appears on the display. 
Refer to the table below to locate and clear the paper jam.
To avoid tearing the paper, pull out the jammed paper gently 
and slowly. Follow the instructions in the following sections to 
clear the jam. 
In the paper input tray
1Open and close the front cover. The jammed paper 
automatically exits the machine.
If the paper does not exit, continue to step 2.
2Pull the paper input tray out. 
MessageLocation of JamGo to
[Paper Jam 0]
Open/Close 
Door
In the paper input tray below and
page 9.1
[Paper Jam 1] 
Open/Close 
Door
In the fuser area or around 
the toner cartridge
In the manual feederpage 9.2
[Paper Jam 2] 
Check Inside
In the paper exit area page 9.2
3Remove the jammed paper by gently pulling it straight 
out.
If there is any resistance and the paper does not move 
when you pull, or if you cannot see the paper in this area, 
check the fuser area around the toner cartridge. See 
page 9.2. 
4Insert the paper input tray into the machine until it snaps 
into place.
5Open and close the front cover to resume printing.
In the manual feeder
1If the paper is not feeding properly, pull the paper out of 
the machine.
2To resume printing, open and close the front cover.
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							Troubleshooting
9.2
In the fuser area or around the toner 
cartridge
NOTE: The fuser area is hot. Take care when removing paper 
from the machine.
1Open the front cover and pull the toner cartridge out.
2Remove the jammed paper by gently pulling it straight 
out.
3Replace the toner cartridge and close the front cover. 
Printing automatically resumes.
In the paper exit area
1Open and close the front cover. The jammed paper 
automatically exits the machine.
If the paper does not exit, continue to step 2.
2Gently pull the paper out of the output tray. Skip to step 9. 
If you cannot see the jammed paper in the output tray, 
continue to the next step.
3Lift the scan unit.
4Pull the jammed paper out gently.
5Close the scan unit by pushing a tab to the left and hold it 
down and lowering the cover carefully until the cover is 
holding down the tab.
If there is any resistance and the paper does not move 
when you pull or if you cannot see the paper under the 
scan unit, continue to the next step.
6Open the rear cover.
7Remove the jammed paper by gently pulling it straight 
out.
8Close the rear cover.
9Open and close the front cover to resume printing.
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							Troubleshooting
9.3
Tips for avoiding paper jams
By selecting the correct paper types, most paper jams can be 
avoided. When a paper jam occurs, follow the steps outlined in 
page 9.1. 
• Follow the procedures in page 2.3. Ensure that the 
adjustable guides are positioned correctly.
• Do not overload the paper input tray. Ensure that the paper 
is below the paper capacity mark on the inside wall of the 
paper input tray.
• Do not remove paper from the paper input tray while your 
machine is printing.
• Flex, fan, and straighten the paper before loading. 
• Do not use creased, damp, or highly curled paper.
• Do not mix paper types in the paper input tray.
• Use only recommended print materials. See page 3.2.
• Ensure that the recommended print side of print materials is 
facing down in the paper input tray and facing up in the 
manual feeder.Understanding the Status LED
The Status LED on the control panel shows the status of your 
machine. See the table below to know your machine’s status.
StatusDescription
Off • The machine is off-line.
• The machine is in Power Save mode. 
When data is received, or any button is 
pressed, it switches to on-line 
automatically.
Green On The machine is on-line and can be used.
Blinking • When the backlight slowly blinks, the 
machine is receiving data from the 
computer.
• When the backlight normally blinks, the 
machine is scanning the loaded 
document.
• When the backlight fast blinks, the 
machine is printing data. 
Red On • The toner cartridge is empty, or needs to 
be changed. See page 8.4
• A paper jam has occurred. To solve the 
problem, see page 9.1.
• The front cover is open. Close the front 
cover.
• There is no paper in the paper input 
tray. Load paper in the paper input tray.
• The machine has stopped due to a major 
error. Check the display message. See 
page 9.4 for details on the meaning of 
the error message.
Blinking • A minor error occurs and the machine is 
waiting an error to be cleared. Check the 
display message. When the problem is 
cleared, the machine resumes. 
• The toner cartridge is low. Order a new 
toner cartridge. You can temporarily 
improve print quality by redistributing 
the toner. See page 8.4.
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							Troubleshooting
9.4
Understanding display messages
Messages appear on the Smart Panel program window or the 
control panel display to indicate the machine’s status or errors. 
Refer to the tables below to understand the messages’ meaning 
and correct the problem if necessary. Messages and their 
meanings are listed in alphabetical order.
NOTE: When you call for service, it is very convenient to tell 
the service representative the display message.
DisplayMeaningSuggested solutions
Door Open
The front cover 
or 
rear cover is 
not securely 
latched.Close the cover until it locks 
into place.
Hsync ErrorA problem has 
occurred in the LSU 
(Laser Scanning 
Unit).Unplug the power cord and 
plug it back in. If the problem 
persists, please call for service.
Invalid TonerYou have used an 
unauthorized 
cartridge.You must use a Samsung 
approved cartridge.
Jam 1 or Install 
Toner•The toner 
cartridge
 is not 
installed.
• Paper has 
jammed in the 
fuser area or in 
the manual 
feeder.• Install the Samsung genuine toner cartridge designed 
for your machine. Otherwise 
reinstall 
toner cartridge at 
several times. See page 2.2.
• Clean the paper jam. See 
page 9.1.
Low Heat ErrorThere is a problem 
in the fuser unit.Unplug the power cord and 
plug it back in. If the problem 
persists, please call for service.
[LSU Error]A problem has 
occurred in the LSU 
(Laser Scanning 
Unit).Unplug the power cord and 
plug it back in. If the problem 
persists, please call for service.
[No Paper]
Add PaperThe paper in the 
paper input tray 
has run out.Load paper in the 
paper input 
tray
. See page 2.3.
Open Heat ErrorThere is a problem 
in the fuser unit.Unplug the power cord and 
plug it back in. If the problem 
persists, please call for service.
[Over Heat]There is a problem 
in the fuser unit.Unplug the power cord and 
plug it back in. If the problem 
persists, please call for service.
[Paper Jam 0]
Open/Close 
DoorPaper has jammed 
in the feeding area 
of the 
paper 
input tray
.Clear the jam. See page 9.1.
[Paper Jam 1] 
Open/Close 
DoorPaper has jammed 
in the fuser area or 
in the 
manual 
feeder
.Clear the jam. See page 9.1.
[Paper Jam 2] 
Check Inside
Paper has jammed 
in the paper exit 
area.Clear the jam. See page 9.2.
Power FailurePower has turned 
off then on and the 
machine’s memory 
has not been back 
up.The job which you were trying 
to do before the power failure 
must be completely re-done.
Scanner ErrorThere is a problem 
in the scanner unit.Unplug the power cord and 
plug it back in. If the problem 
persists, please call for service.
Toner Empty 
Replace TonerThe toner cartridge 
has run out.Replace the toner cartridge with 
a new one. See  page 8.4.
Toner 
Exhausted 
Replace TonerTo prevent serious 
pollution or 
breakdown of 
printer, the printer 
stops printing.Replace the toner cartridge with 
a new one. See  page 8.4.
Toner LowThe toner is almost 
empty.Take out the toner cartridge 
and gently shake it. By doing 
this, you can temporarily 
reestablish printing operations.
NonSamsung 
Toner Replace 
TonerThe toner cartridge 
is not a Samsung-
genuine cartridge. Replace the toner cartridge with 
a Samsung-genuine.
DisplayMeaningSuggested solutions
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							Troubleshooting
9.5
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, please 
call for service.
Paper feeding problems
ConditionSuggested solutions
Paper is jammed 
during printing.Clear the paper jam. See page 9.1.
Paper sticks 
together.• Ensure that there is not too much paper in the 
paper input tray. The paper input tray can hold up 
to 250 sheets of paper, depending on the thickness 
of your paper.
• Make sure that you are using the correct type of 
paper. See page 3.2.
• Remove paper from the paper input 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 
paper input tray. Load paper of only one type, size, 
and weight.
• If multiple sheets have caused a paper jam, clear 
the paper jam. See page 9.1.
Paper does not feed 
into the machine.• Remove any obstructions inside the machine.
• Paper has not been loaded correctly. Remove paper 
from the paper input tray and reload it correctly.
• There is too much paper in the paper input tray. 
Remove excess paper from the paper input tray.
• The paper is too thick. Use only paper that meets 
the specifications required by the machine. See 
page 3.2.
The paper keeps 
jamming.• There is too much paper in the paper input tray. 
Remove excess paper from the tray. If you are 
printing on special materials, use the manual 
feeder.
• An incorrect type of paper is being used. Use only 
paper that meets the specifications required by the 
machine. See page 3.2.
• There may be debris inside the machine. Open the 
front cover and remove the 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.
Printing 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 
printer.Select 
Samsung SCX-4300 Series as 
your default printer in your Windows.
Check the machine for the following:
• The front cover is not closed. - Close the front cover.
• Paper is jammed. - Clear the paper jam. See page 9.1.
• No paper is loaded. - Load paper. See page 2.3.
• The toner cartridge is not installed. - Install the toner 
cartridge. See page 2.2.
If a printer 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, for example, LPT1. 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 display message on the control 
panel to see if the machine is indicating a 
system error.
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							Troubleshooting
9.6
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 
Software Section.
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.
The maximum print speed of your 
machine is 19 PPM for Letter-sized paper 
and 18 PPM for A4-sized paper.
Half the 
page is 
blank.The page 
orientation 
setting may be 
incorrect.Change the page orientation in your 
application. See the 
Software Section.
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 
paper input 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.
ConditionPossible causeSuggested solutions
Pages 
print, but 
are blank.The toner 
cartridge is 
defective or out 
of toner.Redistribute the toner, if necessary. See 
page 8.3.
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.
An error 
occurs 
repeatedly 
when you 
are printing 
with the 
USB 
connection.When the USB 
mode is set to 
Fast, some PC 
users may 
experience poor 
USB 
communication.Change the USB mode to 
Slow. To do so, 
follow these step:
1Press Menu until Machine Setup 
appears on the top line of the 
display.
2Press the scroll button (  or  ) until 
USB mode appears and press Ok.
3Press the scroll button (  or  ) until 
Slow appears and press Ok.
4Press Stop/Clear to return to 
standby mode.
ConditionPossible causeSuggested solutions
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							Troubleshooting
9.7
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 
print
If 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 8.3. 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 3.2.
• If the entire page is light, the print resolution 
setting is too low or the toner save mode is on. 
Adjust the print resolution and turn the toner save 
mode off. See the 
Software Section and 
page 2.6, respectively.
• A combination of faded or smeared defects may 
indicate that the toner cartridge needs cleaning. 
See page 8.2.
• The surface of the LSU part inside the machine 
may be dirty. Clean the LSU. See page 8.2.
Toner specks• The paper may not meet specifications; for 
example, the paper is too moist or too rough. See 
page 3.2.
• The transfer roller may be dirty. Clean the inside 
of your machine. See page 8.1.
• The paper path may need cleaning. See page 8.2.
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 3.2.
• The paper lot is bad. The manufacturing 
processes can cause some areas to reject toner. 
Try a different kind or brand of paper.
• If these steps do not correct the problem, contact 
a service representative.
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Vertical linesIf black vertical streaks appear on the page:
• The drum inside the toner cartridge has probably 
been scratched. Remove the toner cartridge and 
install a new one. See page 8.4.
If white vertical streaks appear on the page:
• The surface of the LSU part inside the machine 
may be dirty. Clean the LSU (see page 8.2).
Gray backgroundIf the amount of background shading becomes 
unacceptable:
• Change to a lighter weight paper. See 
page 3.2.
• 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 8.4.
Toner smear• Clean the inside of the machine. See page 8.1.
• Check the paper type and quality. See page 3.2.
• Remove the toner cartridge and install a new one. 
See page 8.4.
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 toner 
cartridge; see page 8.2. After the printout, if you 
still have the same problems, remove the toner 
cartridge and install a new one. See page 8.4.
• 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.
• If you use inferior quality paper; see page 8.2.
ConditionSuggested solutions
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							Troubleshooting
9.8
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 3.2.
• If characters are improperly formed and 
producing a wavy effect, the scanner unit may 
need service. For service, contact a service 
representative.
Page skew• Ensure that the paper is loaded properly.
• Check the paper type and quality. See 
page 3.2.
• 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 3.2.
• Turn over the stack of paper in the tray. Also try 
rotating the paper 180° in the tray.
• Try printing to the rear cover.
ConditionSuggested solutions
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Wrinkles or 
creases• Ensure that the paper is loaded properly.
• Check the paper type and quality. See 
page 3.2.
• Turn over the stack of paper in the tray. Also try 
rotating the paper 180° in the tray.
• Try printing to the rear cover.
Back of printouts 
are dirtyCheck for leaking toner. Clean the inside of the 
machine. See page 8.1.
Black pages• The toner cartridge may not be installed properly. 
Remove the toner cartridge and reinsert it.
• The toner cartridge may be defective and need 
replacing. Remove the toner cartridge and install 
a new one. See page 8.4.
• The machine may require repair. Contact a service 
representative.
Loose toner• Clean the inside of the machine. See page 8.1.
• Check the paper type and quality. See 
page 3.2.
• Remove the toner cartridge and install a new one. 
See page 8.4.
• 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 3.2.
ConditionSuggested solutions
A
A
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