Samsung ML 3050 User Manual

							
8.4   
3 Remove the new toner cartridge from its bag.
Caution
Do not use sharp objects, such as a knife or scissors, to open 
the toner cartridge  package. They might  scratch the drum of 
the cartridge.
4 Remove the packing tape and roll the cartridge 5 or 6 items to 
distribute the toner.
Thoroughly roll the cartridge to assure maximum copies per 
cartridge. Save the box and the plastic bag for shipping.
Cautions
• 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.
• To prevent damage to the  toner cartridge, do not expose it 
to light for more than a few minutes. Cover it with a piece of 
paper, if necessary. 
• Do not touch the green  surface underside of the toner 
cartridge . Use the handle on the cartridge to avoid touching 
this area.
5 Hold the  toner cartridge  by the handle and slowly insert the 
cartridge into the opening in the printer.
6 Tabs on the sides of the cartridge and corresponding grooves 
within the printer will guide the cartridge into the correct position 
until it locks into place completely.
7 Close the  front cover . Make sure that the cover is securely closed.
Clearing the Toner Low Replace Toner message
When the To n e r  L o w  Replace Toner  message appears you can 
configure not to see this message again not to disturb you.
1 Press  Menu until System Setup  appears on the bottom line of the 
display and press  OK.
2 Press the Scroll buttons until  Maintenance appears and press  OK.
3 Press the Scroll buttons until  CLR Empty Msg. appears and press 
OK .
4 Select  On and press  OK.
5 Now the  To n e r  L o w  Replace Toner  message does not appear but 
the  Replace Toner  message will remain for  reminding you that the 
new cartridge needs to be installed for quality.
Caution
Once you have selected  On, this setting will be permanently 
written to the memory of the toner cartridge, and this menu will 
be disappeared from the  Maintenance menu.
Maintenance parts
To avoid print quality and paper feed  problems resulting from worn parts 
and to maintain your printer in top  working condition the following items 
will need to be replaced at the specified number of pages or when the 
life span of each item has expired.
Samsung highly recommends that an  authorized service provider, dealer 
or the retailer where you bought pr inter performs this maintenance 
activity. 
ItemsYield (Average)
Transfer roller 70,000
Pick-up roller 150,000
Fuser unit  80,000
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9.1   
9 Troubleshooting
This chapter provides helpful informat ion for what to do if you encounter 
an error while using your printer. 
This chapter includes:
• Clearing paper jams
• Troubleshooting checklist
• Understanding the Status LED
• Understanding display messages
• Toner cartridge-related messages
• Solving general printing problems
• Solving print quality problems
• Common Windows problems
• Common Macintosh problems
• Common PostScript problems
• Common Linux problems
Clearing paper jams
Note
When removing paper that is jammed in the printer, if possible 
always pull the paper in the direction that it normally moves so 
as not to damage internal components. Always pull firmly and 
evenly; do not jerk the paper. If the paper tears, ensure that all 
fragments of paper are removed; otherwise a jam will occur 
again.
When a paper jam occurs, the Status  LED lights red. Open and close the 
front cover. The jammed paper automatically exit the printer. 
If the paper does not exit, check the display on the control panel. The 
message indicating the corresponding location of the paper jam 
appears. Refer to the table below to locate the paper jam and to clear it: 
In the paper feed area
In the tray 1
1 Pull the tray 1 open.
MessageLocation of JamGo To
Paper Jam 0
Open/Close Door In the paper feed area
(tray 1, optional tray 2, multi-
purpose tray)
below
Paper Jam 1
Open/Close Door Around the toner cartridge page 9.3
Paper Jam 2
Check Inside In the paper exit area page 9.3
Duplex Jam 0 
Check Insidea
a. ML-3051ND only
In the duplex area page 9.4
Duplex Jam 1 
Open/Close DooraIn the duplex area page 9.5
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9.2   
2 Remove the jammed paper by gently pulling it straight out. Make 
sure that all of the paper is  properly aligned in the tray 1.
If the paper does not move when you pull, or if you do not see the 
paper in this area, check the fuser area around the toner cartridge. 
See page 9.3.
3 Insert the tray 1 into the printer  until it snaps into place. Printing 
automatically resumes.
In the optional tray 2
1 Pull the optional tray 2 open.
2 Remove the jammed p aper from the printer.
If the paper does not move when you pull, or if you do not see the 
paper in this area, stop and go to step 3.
3 Pull the tray 1 half.
4Pull the paper straight up and out.
5 Insert the trays back  into the printer. Printing automatically 
resumes.
In the multi-purpose tray
1 If the paper is not feeding properly, pull the paper out of the printer.
2 Open and close the front cover to resume printing.
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9.3   
Around the toner cartridge
Note
The fuser area is hot. Take care when removing paper from the 
printer.
1 Open the front cover and pull the toner cartridge out.
2 Remove the jammed paper by gently pulling it straight out.
3 Replace the toner cartridge and cl ose the front cover. Printing 
automatically resumes.
In the paper exit area
1 Open and close the front cover. Th e jammed paper is automatically 
ejected from the printer. 
2 Gently pull the paper out  of the output tray.
If you do not see the jammed paper  or if there is any resistance 
when you pull, stop and go to the next step.
3 Open the rear cover.
4 If you see the jammed paper, push the pressure lever on each side 
up and remove the paper. Return the pressure lever to its original 
position and skip the step 10.
If you still do not see the paper, go to the next step.
1pressure lever
1
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9.4   
5 Release the blue strap, the rear  cover stopper, and fully open the 
rear cover, as shown. 
6 Unfold the duplex guide fully.
7 While pushing the fuser lever to the right, open the fuser door.
1rear cover stopper
2rear cover2
1
1duplex guide
1
1fuser lever
2fuser door21 8
Pull the jammed paper out.
If the jammed paper does not move when you pull, push the 
pressure lever on each side up to loose the paper, and then remove 
it.
9 Return the lever, door, stopper, and guide to their original position.
10 Close the rear cover. Prin ting automatically resumes.
In the duplex unit area (ML-3051ND  only)
If the duplex unit is not inserted correctly, paper jam may occur. Make 
sure that the duplex unit is inserted correctly.
Duplex jam 0
1 Pull the duplex unit out of the printer.
1pressure lever
1
1duplex unit
1
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9.5   
2 Remove the jammed paper from the duplex unit.
If the paper does not come out wit h the duplex unit, remove the 
paper from the bottom of the printer.
Duplex jam 1
1 Open the rear cover.
2 Unfold the duplex guide fully.
1
1duplex guide
3Pull the jammed paper out.
Tips for avoiding paper jams
By selecting the correct media types, most paper jams can be avoided. 
When a paper jam occurs, follow the steps outlined on page 9.1. 
•  Follow the procedures on page 5.5. Ensure that the adjustable guides 
are positioned correctly.
•  Do not overload the tray. Ensure  that the paper level is below the 
paper capacity mark on the inside wall of the tray.
•  Do not remove paper from the tray while your printer is printing.
•  Flex, fan, and straighten paper before loading. 
•  Do not use creased, damp, or highly curled paper.
•  Do not mix paper types in a tray.
•  Use only recommended print media. See 
page 5.1.
•  Ensure that the recommended print side of print media is facing down  in the tray, or facing up in the multi-purpose tray.
•  If paper jams occur frequently when you print on A5-sized paper:
Load the paper into the tray with the  long edge facing the front of the 
tray. 
In the printer properties window, set the page orientation to be rotated 
90 degrees. See the  Software Section.
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9.6   
Troubleshooting checklist
If the printer is not working properly,  consult the following checklist. If the 
printer does not pass a step, follow the corresponding troubleshooting 
suggestions.
ConditionSuggested solutions
Make sure that the 
Status LED on the 
control panel lights 
green and  Ready is 
shown on the 
display.  • If the Status LED is off, check the power 
cord connection. Check the power switch. 
Check the power source by plugging the 
power cord into another outlet.
• If the Status LED lights red, check the  display message. See page 9.7. 
Print a demo page 
to verify that the 
printer is feeding 
paper correctly. See 
page 2.6. • If a demo page does not print, check the 
paper supply in the tray.
• If the paper jams in the printer, see  page 9.1.
• If an error message appears on the  display, see page 9.7.
Check the demo 
page to see if it 
printed correctly. If there is a print quality problem, see 
page 9.11.
Print a short 
document from a 
software application 
to verify that the 
computer and 
printer are 
connected and are 
communicating 
correctly. • If the page does not print, check the cable 
connection between the printer and the 
computer. 
• Check the print queue or print spooler to 
see if the printer has been paused.
• Check the software application to ensure 
that you are using the proper printer driver 
and communication port. If the page is 
interrupted during printing, see page 9.9.
If completing the 
checklist does not 
resolve the printer 
problem, check the 
following 
troubleshooting 
sections. • “Understanding display messages” on 
page 9.7.
• “Solving general printing problems” on  page 9.9.
• “Common Windows problems” on  page 9.13.
• “Common Macintosh problems” on 
page 9.14.
• “Common PostScript problems” on  page 9.13.
• “Common Linux problems” on page 9.14.
Understanding the Status LED
StatusDescription
Off • The printer is off-line and cannot print.
• The printer is in power save mode. When 
data is received, it switches to on-line 
automatically.
Green On
The printer is on-line and can receive data 
from the computer.
Blinking • When the backlight blinks slowly, the printer 
is receiving data from the computer.
• When the backlight blinks quickly, the printer  is receiving and printing data. 
Red On
• 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 tray. Load paper in 
the tray.
• The toner cartridge installed is not a genuine  cartridge, and you selected  Stop at the 
NonGenuine Toner  prompt. See  page 9.7.
• The lifespan of the toner cartridge is  reached, and you selected  Stop at the 
Toner Exhausted  prompt. See  page 9.7.
• The printer has stopped printing due to a  major error.
Blinking • A minor error is occurring and the printer is 
waiting for the error to be cleared. When the 
problem is cleared, the printer resumes 
printing.
• The  toner cartridge  is totally exhausted. 
Remove the old  toner cartridge and install a 
new one. See page 8.3.
• The toner cartridge installed is not a genuine  cartridge, and you selected  Continue at the 
NonGenuine Toner  prompt. See  page 9.7.
• The lifespan of the toner cartridge is  reached, and you selected  Continue at the 
Toner Exhausted  prompt. See  page 9.7.
• The toner cartridge is low. Order a new toner  cartridge. You can temporarily improve print 
quality by redistributing the toner. See 
page 8.3.
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9.7   
Understanding display messages
Messages appear on the Smart Panel  program window or the control 
panel display to indicate the printer’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.
MessageMeaningSuggested solutions
Door Open The front cover  or 
rear cover  is not 
securely latched. Close the cover until 
it locks into place.
Duplex Jam 0 
Check Inside Paper has jammed 
during duplex 
printing. Clear the jam. See 
page 9.4.
Duplex Jam 1 Open/
Close DoorPaper has jammed 
during duplex 
printing. Clear the jam. See 
page 9.5.
Fuser Door Open The fuser door  is 
not securely latched. Open the 
rear cover  
and close the  fuser 
door  until it locks into 
place. 
For the location of 
the  fuser door , see 
page 9.4.
Load Manually 
Press Stop Key The 
multi-purpose 
tray  is empty in 
manual feed mode. Load a sheet of print 
material and press 
Stop.
Low Heat Error
Cycle Power 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.
LSU Hsync Error
Cycle Power A problem has 
occurred in the LSU 
(Laser Scanning 
Unit). Unplug the 
power 
cord  and plug it back 
inches. If the 
problem persists, 
please call for 
service.
LSU Motor Error
Cycle Power A problem has 
occurred in the LSU 
(Laser Scanning 
Unit). Unplug the 
power 
cord  and plug it back 
inches. If the 
problem persists, 
please call for 
service.
Main Motor Locked There is a problem 
in the main motor. Open and then close 
the 
front cover .
Open Heat Error
Cycle Power 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.
Over Heat Error
Cycle Power 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 Door Paper has jammed 
in the feeding area 
of the tray. Clear the jam. See 
page 9.1 and 
page 9.1.
Paper Jam 1
Open/Close Door Paper has jammed 
in the fuser area.
Clear the jam. See 
page 9.3.
Paper Jam 2
Check Inside Paper has jammed 
in the paper exit 
area. Clear the jam. See 
page 9.3.
Printing... The printer is 
printing jobs using 
the displayed 
language. Complete your 
printing.
Ready The printer is on-line 
and ready to printer. Use your printer.
Self Diagnostic... The engine in your 
printer is checking 
some problems 
detected. Please wait a few 
minutes.
Sleeping... The printer is on 
power save mode. When data is 
received, it switches 
to on-line 
automatically.
Tray  1
Paper Empty There is no paper in 
the 
tray 1 . Load paper in the 
tray 1
. See page 5.5.
Tray  2
Paper Empty There is no paper in 
the 
optional tray 2 .Load paper in the 
optional tray 2
. See 
page 5.5.
MessageMeaningSuggested solutions
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9.8   
Toner cartridge-related messages
MessageMeaningSuggested solutions
Install Toner A toner cartridge  is not installed. Install a  toner cartridge.
Invalid Toner The toner cartridge  you have 
installed is not for your printer. Install a 
Samsung -genuine toner cartridge , designed for your printer.
To n e r  L o w The toner cartridge is almost 
empty. Take out the 
toner cartridge  and thoroughly shake it. By doing this, you can temporarily 
reestablish printing operations.
NonGenuine Toner    Stop The toner cartridge installed is not 
a genuine cartridge.
You can select either 
Stop or Continue . If you do not select any,  the printer will work as 
Stop  is selected.
If you select  Stop, you cannot print until the genuine cartridge is installed. However, you 
can still print any kind of reports.
If you select  Continue, you can keep printing but the q uality cannot be guaranteed, and the 
product support is no longer provided.
If you want to change the selection, turn the printer off and on to have this message appear 
again, and then re-select  Stop or Continue .
NonGenuine Toner
Replace Toner1 The toner cartridge installed is not 
a genuine cartridge.
This message appears when you selected 
Stop at the  NonGenuine Toner  prompt.
Install the genuine  toner cartridge.
NonGenuine Toner
Replace Toner The toner cartridge installed is not 
a genuine cartridge.
This message appears when you selected 
Continue at the NonGenuine Toner  prompt.
Install the genuine  toner cartridge.
To n e r  L o w
Replace Toner The toner in the cartridge has run 
out.
Install a new genuine 
toner cartridge. 
You can keep printing but the quality cannot  be guaranteed, and the product support is no 
longer provided. 
You can configure not to see the  Toner Low Replace Toner  message. See  page 8.4.
Replace Toner The toner in the cartridge has run 
out. This message appears when you turned off the 
To n e r  L o w Replace Toner  message. See 
page 8.4.
Install a new genuine  toner cartridge
.
You can keep printing but the quality cannot  be guaranteed, and the product support is no 
longer provided.
Toner Exhausted    Stop The lifespan of the toner cartridge 
is reached.
You can select either 
Stop or Continue . If you do not select any,  the printer will work as 
Stop  is selected.
If you select  Stop, you cannot print until the genuine cartridge is installed.
If you select  Continue, you can keep printing but the q uality cannot be guaranteed, and the 
product support is no longer provided.
If you want to change the selection, turn the printer off and on to have this message appear 
again, and then re-select  Stop or Continue .
Toner Exhausted
Replace Toner1 The lifespan of the toner cartridge 
is reached.
This message appears when you selected 
Stop at the  Toner Exhausted  prompt.
Install the genuine  toner cartridge.
Toner Exhausted
Replace Toner The lifespan of the toner cartridge 
is reached.
This message appears when you selected 
Continue at the Toner Exhausted  prompt.
Install the genuine  toner cartridge.
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9.9   
Solving general printing problems
For problems with the operation of yo ur printer, refer to the table for 
suggested solutions.
ConditionPossible causeSuggested solutions
The printer 
does not 
print. The printer is not 
receiving power.
Check the power cord 
connections. Check the power 
switch and the power source.
The printer is not 
selected as the 
default printer. Select 
Samsung ML-3050 
Series
 PCL 6  orSamsung ML-
3050 Series
 PS  as your default 
printer.
The printer cover 
is not closed. Close the printer cover.
Paper is jammed. Clear the paper jam. See  page 9.1.
No paper is 
loaded. Load paper. See page 5.4.
The toner 
cartridge is not 
installed. Install the toner cartridge.
The printer may 
be in manual feed 
mode and out of 
paper. Check the display message, 
add paper to the multi-purpose 
tray, and press 
Stop (ML-3050) 
or  OK  (ML-3051N or ML-
3051ND) on the printer’s 
control panel.
The connection 
cable between 
the computer and 
the printer is not 
connected 
properly. Disconnect the printer cable 
and reconnect it.
The connection 
cable between 
the computer and 
the printer is 
defective. If possible, attach the cable to 
another computer that is 
working properly and try to print 
a document. 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 printer is attached to the 
correct one.
The printer 
does not 
print.
(Continued) The printer 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. Reinstall the printer driver; See 
the 
Software Section . Try 
printing a test page.
The printer is 
malfunctioning. Check the display message on 
the control panel to determine if 
the printer is indicating a 
system error.
Printer 
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
.
Paper does 
not feed into 
the printer. Paper has not 
been loaded 
correctly.
Remove paper from the tray 
and reload it correctly.
Check that the paper size 
guides are set 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 
printer specifications.
Print job is 
extremely 
slow. The job may be 
very complex. Reduce the complexity of the 
page(s) or try adjusting the 
print quality settings.
To adjust the print quality 
settings, reduce the resolution. 
If you have set the resolution to 
1200 dpi 
(Best ), change it to 
600 dpi  (Normal ). See the 
Software Section .
Change the port setting to the 
USB or network port to improve 
print speed.
Your printer prints A4-sized 
paper at 28 ppm and letter-
sized paper at 30 ppm. If you 
use the ML-3051ND, your 
printer prints A4-sized paper at 
19 ipm and letter-sized paper at 
21 ipm in the duplex printing 
mode.
ConditionPossible causeSuggested solutions
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