Troubleshooting
6
6. Troubleshooting
6.1 Procedure of Checking the Symptoms
Before attempting to repair the printer first obtain a detailed description of the problem from the customer.
Power On
OP Panel
ON?
- No Power
- Power Module error
- Main PBA error
- LCD Panel error
Ready or
Power save
Indicate
Error Massage
Refer to
Error Massage
<Chapter 4.8.2>
Test Print
printing
Quality is
Nomal?
Refer to "Solution
of 6.2.3 Print Quality"
END
Service Manual
Samsung Electronics
6-1
Troubleshooting
6.2 Solution
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.
6.2.1 Paper feeding problems
Condition
6-2
Suggested solutions
Paper is jammed during printing.
Clear the paper jam.
Paper sticks together.
• Ensure that there is not too much paper in the tray. The tray can hold up to 550
sheets of paper, depending on the thickness of your paper.
• 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.
• If multiple sheets have caused a paper jam, clear the paper jam.
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.
• If an original does not feed into the machine, the DADF rubber pad may require
to be replaced. Contact a service representative.
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.
• 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 the
debris.
• If an original does not feed into the machine, the DADF rubber pad may require
to be replaced. Contact a service representative.
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.
Service Manual
Samsung Electronics
Troubleshooting
6.2.2 Printing problems
Condition
The machine
does not print.
Possible cause
Suggested solutions
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-6x45 Series PCL 6 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.
• No paper is loaded. Load paper.
• 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 display message on the control panel to
see if the machine is indicating a system error.
The machine
selects print
materials from the
wrong paper
source.
The paper source selection in the printer For many software applications, the paper source
properties may be incorrect.
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.
If you are using Windows 98/Me, the
Spool Setting may be set incorrectly.
From the Start menu, choose Settings and then
Printers. Right-click the Samsung SCX-6x45 Series
PCL 6 machine icon, choose Properties, click the
Details tab, and then choose the Spool Settings
button. Select the desired spool setting.
Service Manual
Samsung Electronics
6-3
Troubleshooting
Condition
Half the page is
blank.
Possible cause
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, The printer cable is loose or defective.
but the text is
wrong, garbled, or
incomplete.
Pages print, but
are blank.
When you are
using Windows
98, the illustrations
print incorrectly
from Adobe
Illustrator.
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.
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.
The setting in the software application
is wrong.
Select Download as Bit Image in the Advanced
Options window of the graphic properties and print
the document again.
PDF file does not
Incompatibility between the PDF file
print correctlyand the Acrobat products.
some parts are
missing in graphics,
text or illustrations.
6-4
Suggested solutions
Printing the PDF file as an image may enable the file
to print. Turn on Print As Image from the Acrobat
printing options.
Note: It Will take longer to print when you print a
PDF file as an image.
Service Manual
Samsung Electronics
Troubleshooting
6.2.3 Printing quality problems
Condition
Suggested 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.
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.
• 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.
• A combination of faded or smeared defects may indicate that the toner cartridge needs cleaning.
Contact a service representative.
• The surface of the LSU part inside the machine may be dirty. Clean the LSU, contact a service
representative.
Toner specks
• The paper may not meet specifications; for example, the paper is too moist or too rough.
• The transfer roller may be dirty. Clean the inside of your machine. Contact a service
representative.
• The paper path may need cleaning. Contact a service representative.
Dropouts
If 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.
• 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.
Vertical lines
If black vertical streaks appear on the page:
• The drum inside the printer has probably been scratched. Remove the drum cartridge and
install a new one.
If white vertical streaks appear on the page:
• The surface of the LSU part inside the machine may be dirty. Clean the LSU.
Contact a service representative.
Service Manual
Samsung Electronics
6-5
Troubleshooting
Condition
6-6
Suggested solutions
Gray background
If the amount of background shading becomes unacceptable:
• Change to a lighter weight paper.
• 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 drum and toner cartridge and then, install a new one.
Toner smear
• Clean the inside of the machine. Contact a service representative.
• Check the paper type and quality.
• Remove the drum and toner cartridge and then, install a new one. See page 9.4.
Vertical repetitive
defects
If marks repeatedly appear on the printed side of the page at even intervals:
• The drum and toner cartridge may be damaged. If a repetitive mark occurs on the page, print a
cleaning sheet several times to clean the cartridge; contact a service representative. After the
printout, if you still have the same problems, remove the drum and toner cartridge and then,
install a new one.
• 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.
Background scatter
Background 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.
• If characters are improperly formed and producing a wavy effect, the scanner unit may need
service. For service, contact a service representative.
Service Manual
Samsung Electronics
Troubleshooting
Condition
Suggested solutions
Page skew
• Ensure that the paper is loaded properly.
• Check the paper type and quality.
• 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.
• 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.
• Turn over the stack of paper in the tray. Also try rotating the paper 180° in the tray.
Back of printouts
are dirty
Check for leaking toner. Clean the inside of the machine. Contact a service representative.
Black pages
• The drum cartridge may not be installed properly. Remove the cartridge and reinsert it.
• The drum cartridge may be defective and need replacing. Remove the drum cartridge and
install a new one.
• The machine may require repair. Contact a service representative.
Service Manual
Samsung Electronics
6-7
Troubleshooting
Condition
6-8
Suggested solutions
Loose toner
• Clean the inside of the machine. Contact a service representative.
• Check the paper type and quality.
• Remove the drum and toner cartridge and then, install a new one.
• If the problem persists, the machine may require repair. Contact a service representative.
Character Voids
Character 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.
Horizontal stripes
If horizontally aligned black streaks or smears appear:
• The drum and toner cartridge may be installed improperly. Remove the cartridge and
reinsert it.
• The drum and toner cartridge may be defective. Remove the toner cartridge and install a
new one.
• If the problem persists, the machine may require repair. Contact a service representative.
Curl
If 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.
An unknown image
repetitively appears
on a next few sheets
or loose toner, light
print, or
contamination occurs.
You printer is probably being used at an altitude of 2,500 m(8,200 ft)or above. The high
altitude may affect the print quality such as loose toner or light imaging. You can set this
option through Printer Settings Utility or Printer Tab in printer driver's properties. Refer to
the Software Section for detail.
Service Manual
Samsung Electronics
Troubleshooting
6.2.4 Copying problems
Condition
Suggested solutions
Copies are too light or too dark.
Use Darkness to darken or lighten the background of the copies.
Smears, lines, marks, or spots
appears on copies.
• If defects are on the original, press Darkness to lighten the background of your
copies.
• If no defects are on the original, clean the scan unit.
Copy image is skewed.
• Ensure that the original is face down on the scanner glass or face up in the
DADF.
• Check that the copy paper is loaded correctly.
Blank copies print out.
Ensure that the original is face down on the scanner glass or face up in the DADF.
Image rubs off the copy easily.
• Replace the paper in the tray with paper from a new package.
• In high humidity areas, do not leave paper in the machine for extended periods
of time.
Frequent copy paper jams occur.
• Fan the stack of paper, then turn it over in the tray. Replace the paper in the tray
with a fresh supply. Check/adjust the paper guides, if necessary.
• Ensure that the paper is the proper paper weight. 75 g/m 2 bond paper is
recommended.
• Check for copy paper or pieces of copy paper remaining in the machine after a
paper jam has been cleared.
Toner cartridge produces fewer
copies than expected before
running out of toner.
• Your originals may contain pictures, solids, or heavy lines. For example, your
originals may be forms, newsletters, books, or other documents that use more
toner.
• The machine may be turned on and off frequently.
• The scanner lid may be left open while copies are being made.
Service Manual
Samsung Electronics
6-9
Troubleshooting
6.2.5 Scanning problems
Condition
6-10
Suggested solutions
The scanner does not work.
• Make sure that you place the original to be scanned face down on the scanner
glass, or face up in the DADF.
• There may not be enough available memory to hold the document you want to
scan. Try the Prescan function to see if that works. Try lowering the scan resolution rate.
• Check that the USB or parallel cable is connected properly.
• Make sure that the USB or parallel cable is not defective. Switch the cable with a
known good cable. If necessary, replace the cable.
• If you are using a parallel cable, ensure that it is compliant with IEEE 1284 standards.
• Check that the scanner is configured correctly. Check scan setting in the
SmarThru Configuration or the application you want to use to make certain that
the scanner job is being sent to the correct port.
The unit scans very slowly.
• Check if the machine is printing received data. If so, scan the document after the
received data has been printed.
• Graphics are scanned more slowly than text.
• Communication speed slows in scan mode because of the large amount of
memory required to analyze and reproduce the scanned image.
Set your computer to the ECP printer mode through BIOS setting. It will help to
increase the speed. For details about how to set BIOS, refer to your computer
user's guide.
Message appears on your
computer screen:
• "Device can't be set to the
H/W mode you want."
• "Port is being used by another
program."
• "Port i s Disabled."
• "Scanner is busy receiving or
printing data. When the current
job is completed, try again."
• "Invalid handle."
• "Scanning has failed."
• There may be a copying or printing job in progress. When that job is complete,
try your job again.
• The Selected port is currently being used.
Restart your computer and try again.
• The printer cable may be improperly connected or the power may be off. You
must use a parallel cable that supports IEEE 1284 bi-directional communications.
• The scanner driver is not installed or the operating environment is not set up
properly.
• Ensure that the machine is properly connected and the power is on, Then restart
your computer.
• The USB cable may be improperly connected or the power may be off.
• Do not use parallel and USB cables at the same time.
Service Manual
Samsung Electronics
Troubleshooting
6.2.6 Network Scan problems
Condition
Suggested solutions
I cannot find a scanned
image file.
You can check the scanned file's destination in the Advanced page in the
Network Scan program's Properties screen.
I cannot find the scanned
image file after scanning.
• Check if the scanned file's application is on your computer.
• Check Send image immediately to the specified folder using an associated
default application in the Advanced page in the Network Scan program's
Properties screen to open the scanned image immediately after scanning.
I forgot my ID and PIN.
Check your ID and PIN in the Server page in the Network Scan program's
Properties screen.
I cannot view the Help file.
To view the Help file, you need to have Internet Explorer 4 service pack 2 or
above.
I cannot use the Samsung
Network Scan Manager
Check your operating system. Supporting operating systems are Windows
98/Me/NT 4.0/2000/XP/2003.
Service Manual
Samsung Electronics
6-11
Troubleshooting
6.2.7 Fax problems
Condition
6-12
Suggested solutions
The machine is not working,
there is no display and the
buttons are not working.
• Unplug the power cord and plug it in again.
• Ensure that there is power to the electrical outlet.
No dial tone sounds.
• Check that the phone line is connected properly.
• Check that the phone socket in the wall is working by plugging in another
phone.
The numbers stored in memory
do not dial correctly.
Make sure that the numbers are stored in memory correctly. Print a Phone Book
list.
The original does not feed into
the machine.
• Make sure that the paper is not wrinkled and you are putting it in correctly.
Check that the original is the right size, not too thick or thin
• Make sure that the DADF is firmly closed.
• The DADF rubber pad may need to be replaced. Contact a service representative.
Faxes are not received
automatically.
• The receiving mode should be set to Fax.
• Make sure that there is paper in the tray.
• Check to see if the display shows any error message. If it does, clear the
problem.
The machine does not send.
• Make sure that the original is loaded in the DADF or on the scanner glass.
• Sending should show up on the display.
• Check the fax machine you are sending to, to see if it can receive your fax.
The incoming fax has blank
spaces or is of poor-quality.
• The fax machine sending you the fax may be faulty.
• A noisy phone line can cause line errors.
• Check your machine by making a copy.
• The toner cartridge may be empty. Replace the toner cartridge.
Some of the words on an
incoming fax are stretched.
The fax machine sending you the fax had a temporary document jam.
There are lines on the
originals you send.
Check your scan unit for marks and clean it.
The machine dials a number,
but a connection with the
other fax machine fails.
The other fax machine may be turned off, out of paper, or cannot answer
incoming calls.
Speak with the other machine operator and ask her/him to sort out the problem.
Faxes do not store in memory.
There may not be enough memory space to store the fax. If the display shows
the Memory Full message, delete from memory any faxes you no longer need
and then try again to store the fax.
Blank areas appear at the
bottom of each page or on other
pages, with a small strip of text
at the top.
You may have chosen the wrong paper settings in the user option setting.
For details about paper settings.
Service Manual
Samsung Electronics
Troubleshooting
6.2.8 Common Windows problems
Condition
Suggested 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.
"Error Writing to LPTx"
message appears.
• Ensure that the cables are connected correctly, the machine is on.
• If bi-directional communication is not turned on in the driver, it will also cause
this message.
"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 standby mode or after printing has
been completed, check the connection and/or whether an error has occurred.
6.2.9 Common PostScript problems
The following situations are PS language specific and may occur when several printer languages are being used.
Problem
Possible Cause
Solution
PostScript file cannot
be printed.
The PostScript driver may not be
installed correctly.
• Install the PostScript driver, referring to the
Software Section.
• Print a configuration page and verify that the PS version is available for printing.
• If the problem persists, contact a service
representative.
"Limit Check Error"
message appears.
The print job was too complex.
You might need to reduce the complexity of the page
or install more memory.
A PostScript error page
prints.
The print job may not be
PostScript.
Make sure that the print job is a PostScript job.
Check to see whether the software application
expected a setup or PostScript header file to be sent
to the machine.
The optional tray 2 is not
selected in the driver.
The printer driver has not been
configured to recognize the
optional tray 2.
Open the PostScript driver properties, select the
Device Settings tab, and set the Tray2 option of the
Installable Options section to Installed.
When print a document in
Macintosh with Acrobat
Reader 6.0 or higher,
colors print incorrectly.
The resolution setting in the
printer driver may not be
matched with that in
Acrobat Reader.
Make sure that the resolution setting in your printer
driver matches that in Acrobat Reader.
Service Manual
Samsung Electronics
6-13
Troubleshooting
6.2.10 Common Linux problems
Problem
6-14
Possible Cause and Solution
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. For instance, this could be
an attempt to print document when port is claimed by a scanning application.
• Check if the port is not busy. Since functional components of MFP (printer and
scanner) share the same I/O interface (port), the situation of simultaneous
access of different "consumer" application to the same port is possible. To avoid
possible conflicts, only one of them at a time is allowed to gain control over the
device. The other "consumer" will encounter "device busy" response. You should
open ports configuration and select the port assigned to your printer. In the
Selected port pane you can see if the port is occupied by some other application.
If this is the case, you should wait for completion of the current job or should
press Release port button, if you are sure that the present owner is not
functioning properly.
• 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 appear
on the scanners list
• Check if your machine is attached to your computer. Make sure that it is
connected properly via the USB port and is turned on.
• Check if the scanner driver for your machine is installed in your system. Open
Unified Driver configurator, switch to Scanners configuration, then press Drivers.
Make sure that driver with a name corresponding to your machine's name is
listed in the window. Check if the port is not busy. Since functional components of
MFP (printer and scanner) share the same I/O interface (port), the situation of
simultaneous access of different "consumer" application to the same port is possible. To avoid possible conflicts, only one of them at a time is allowed to gain
control over the device. The other "consumer" will encounter "device busy"
response. This can usually happen while starting scan procedure, and
appropriate message box appears.
• To identify the source of the problem, you should open ports configuration and
select the port assigned to your scanner. port's symbol /dev/mfp0 corresponds to
LP:0 designation displayed in the scanners' options, /dev/mfp1 relates to LP:1
and so on. USB ports start at / dev / mfp4, so scanner on USB:0 relates to / dev
/ mfp4 respectively and so forth sequentially. In the Selected port pane you can
see if the port is occupied by some other application. If this is the case, you
should wait for completion of the current job or should press Release port button,
if you are sure that the present port's owner is not functioning properly.
Service Manual
Samsung Electronics
Troubleshooting
Problem
Possible Cause and Solution
The machine does not scan
• Check if a document is loaded into the machine.
• Check if your machine is connected to the computer. Make sure if it is connected
properly if I/O error is reported while scanning.
• Check if the port is not busy. Since functional components of MFP (printer and
scanner) share the same I/O interface (port), the situation of simultaneous
access of different "consumer" application to the same port is possible. To avoid
possible conflicts, only one of them at a time is allowed to gain control over the
device. The other "consumer" will encounter "device busy" response. This can
usually happen while starting scan procedure, and appropriate message box will
be displayed.
To identify the source of the problem, you should open ports configuration and
select the port assigned to your scanner. port's symbol /dev/mfp0 corresponds to
LP:0 designation displayed in the scanners' options, /dev/mfp1 relates to LP:1
and so on. USB ports start at /dev/ mfp4, so scanner on USB:0 relates to /
dev/mfp4 respectively and so forth sequentially. In the Selected port pane you
can see if the port is occupied by some other application. If this is the case, you
should wait for completion of the current job or should press Release port button,
if you are sure that the present port's owner is not functioning properly.
I cannot scan via Gimp Frontend.
• Check if Gimp Front-end has "Xsane: Device dialog." on the "Acquire" menu. If
not, you should install Xsane plug-in for Gimp on the your computer.
You can find Xsane plug-in package for Gimp on Linux distribution CD or Gimp
home page. For the detail information, refer to the Help for Linux distribution CD
or Gimp Front-end application.
If you wish to use other kind of scan application, refer to the Help for application.
I encounter error "Cannot open
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 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 port.
I encounter error "Cannot open
port devicaPDF file does not
print correctly-some parts are
missing in graphics, text or
illustrations.e file" when printing
a document.
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.
Note: It Will take longer to print when you print a PDF file as an image.
The machine does not print.
The CUPS (Common Unix Printing System) version distributed with SuSE Linux
9.2 (cups-1.1.21) has a problem with ipp (Internet Printing Protocol) printing.
Service Manual
Samsung Electronics
6-15
Troubleshooting
6.2.11 Common Macintosh problems
Problem
Possible Cause and Solution
PDF file does not print
correctly-some parts are
missing in graphics, text or
illustrations.
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.
Note: 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 can not create the font during the Cover
page printing. English alphabet and numbers are displayed normally at the Cover
page.
6.2.12 General solution
6-16
Error
LCD NOT DISPLAY
[Description]
Engine is warming up properly but LCD does not display anything on.
[Wrong Part]
1. Main Controller
2. OPE
3. SMPS
[Check and Cause]
1. Check 24V on Main controller.
2. If 24V from Main controller is normal, Check the CCFL inverter harness on PE_Main.
3. If not, check the F 71 on SMPS.
[Solution]
1. 24V power and CCFL inverter harness connection are on normal, replace OPE_Main
first and retry.
2. Keep on problem with 24V on, replace the Main controller.
3. Replace the SMPS.
Service Manual
Samsung Electronics
Troubleshooting
Error
LSU Error
[Description]
LSU sync Error displays on LCD
[Wrong Part]
1. Drum Cartridge
2. Main Controller
3. Cover Open Connector
[Check and Cause]
1. Check LSU 5V/24VS
2. Main Controller LSU Part defect
3. Micro Switch Harness
[Solution]
1. Replace Drum Cartridge and retry
2. Replace Main Controller.
3. Replace Micro Switch Assy
Error
Cover Open
[Description]
The cover open massage displays on even when the print cover is closed.
[Wrong Part]
1. Hook Lever in the side cover / Micro Switch
[Check and Cause]
1. The Hook Lever in the top cover may be defective.
2. Check the CN8-4 on Main B°ØD and the micro switch on the rear side of set.
[Solution]
1. Replace the hook lever, if defective.
2. Check Cover Open harness. Replace Cover Open S/W
3. Replace the Main Control board.
Error
Fuser
[Description]
Fuser Error
[Wrong Part]
1. Thermostat Open
2. Check IH Fan
3. IH PBA
4. Main PBA
[Check and Cause]
1. Detach AC connector and measure the resistance between them whether it is below
10ohm. If it is over mega ohm, replace it.
2. Replace IH Fan.
3. Replace IH PBA
4. Replace main PBA.
Service Manual
Samsung Electronics
6-17
Troubleshooting
6-18
Error
Vertical Black Line and Black Band
[Description]
1. Straight thin black vertical line occurs in the printing.
2. Dark black vertical band occur in the printing.
[Wrong Part]
1. Cleaning blade
2. Charge roller
[Check and Cause]
1. Damaged cleaning blade in the drum cartridge
2. Contamination of the charge roller in the drum cartridge
[Solution]
1. If causes 1 and 2 occur in the drum Cartridge, replace the drum cartridge and try
again to print out.
Error
Vertical White Line
[Description]
White vertical voids in the image.
[Wrong Part]
1. LSU
2. Drum Cartridge
[Check and Cause]
1. Foreign matter stuck onto the window of internal lenses of LSU mirror.
2. Foreign matter or toner particles between the magnetic roller and doctor blade.
3. It may occur when Burr and foreign substances are on the window of the drum
cartridge frame.
4. If the fuser is defective, voids occur periodically at the top of a black image.
[Solution]
1. Foreign matter stuck onto the window : Clean the LSU window with recommended
cleaner(IPA) Clean the window with a clean cotton swab.
2. Foreign matter in the LSU : Open the cover of LSU and clean with a cotton swab on
the surface of the reflex mirror.
3. No 3. : Remove the foreign matter and burr of the exposure window.
(the drum cartridge frame)
4. No. 4. : Open the front cover and check ribs that corresponds to the position of the
voids. Remove if found.
5. If the problems are not solved, replace the drum cartridge.
Service Manual
Samsung Electronics
Troubleshooting
Error
Light Image
[Description]
1. The printed image is light, with no ghost.
[Wrong Part]
1. Drum Cartridge
2. HVPS
[Check and Cause]
1. The state of low toner in drum cartridge when the toner of toner cartridge is almost
consumed.
2. Ambient temperature is below than 10 .
3. Bad contact caused by the toner stains between the high voltage terminal in the
HVPS and the one in the set.
4. Abnormal output from the HVPS.
[Solution]
1. Replace the drum cartridge and try to print out.
2. Wait 30 minutes after printer is powered on before you start printing.
3. Clean up the contaminated area by the toner.
4. Replace the HVPS if the problems are not solved by the above four directions.
Error
Dark Image or black
[Description]
The printed image is dark.
[Wrong Part]
1. HVPS
[Check and Cause]
1. No charge voltage in the HVPS board.
2. Charge voltage is not turned on due to the bad contacts between power supply in the
side of the drum cartridge and charge terminal of HVPS.
[Solution]
1. Clean the high voltage charge terminal.
2. Check the state of the connector which connects the engine board and HVPS.
3. Replace the HVPS if not solved by the above direction 1 and 2.
Error
Background
[Description]
Light dark background appears in whole area of the printing.
[Wrong Part]
1. HVPS
2. Low Q/M of developer (High T/C of developer)
[Check and Cause]
1. Does recycle paper be used?
2. Has the life of the developer(carrier+toner) ended?
3. Is the HVPS normal?
[Solution]
1. The Drum cartridge is basically designed to print 60K sheets with simplex mode. If it
prints more than 60K sheets, (around 50K sheets) a background can be occurred.
2. The drum cartridge is not guaranteed if using recycle paper.
3. Replace the drum cartridge when the life of it has been ended.
4. Clean the bushing part of the transfer roller.
5. If the problem is still not solved, replace the drum cartridge.
Service Manual
Samsung Electronics
6-19
Troubleshooting
Error
Toner Supply Error
[Description]
The poor supply of toner in the printing.
[Wrong Part]
1. Toner feed roller
2. Toner supply DC motor
[Check and Cause]
1. The state of rotation of toner feed roller
2. Is the toner supply motor normal?
[Solution]
1. Replace the toner cartridge.
2. Replace the toner supply motor.
Error
RF_ID
[Description]
Drum Cartridge and Toner Container can’t be detected
[Wrong Part]
1. RF_ID Coupler and Tag
2. Main PBA
[Check and Cause]
1.Check RF_ID Tag attached on Drum and Toner
2.Check the DEVE Harness and RF_ID coupler
3.Check Main PBA
[Solution]
1.Replace Drum cartridge and Toner container
2.Replace DEVE Harness and RF_ID coupler.
3.Replace Main PBA
Error
Smart Panel not support
[Description]
Smart Panel only supports USB and Network port.
[Check and Cause]
[Solution]
6-20
If file is printer port, smart panel show below warning message when user try to
launch smart panel. Also printer name is not displayed in the menu of tray icon.
If IP address or USB port name for model A is linked to printer port of model B, Smart
Panel for model B works improperly because model B is not connected.
Service Manual
Samsung Electronics
Samsung Electronics
Replace Main PBA
Yes
and 3.3V on Main PBA
Check 5V/24V on SMPS
NO
Check whether the LED on Main PBA is flickered on.
No Power
NO
Replace SMPS
Troubleshooting
6.2.13 Troubleshooting flowchart
Service Manual
6-21
6-22
Replace SMPS
NO
Yes
Check 24V on Main controller
Replace OP_Main
Yes
Check the CCFL inverter
harness on OPE_Main
Engine is warming up properly but LCD does not display anything on.
No Display on LCD
NO
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
Replace LSU
Yes
Check LSU_5V/24VS
with side cover closed
LSU Error
Replace OPC
No
Reinstall Developer
Yes
Check 5V/24VM on Main
Controller
No
LSU error massage is displayed
Replace SMPS
No
Troubleshooting
Service Manual
6-23
6-24
Replace Main Controller
Yes
Check Micro Switch
Yes
Is the Hook lever Ok?
No
The cover open massage displays on even when the print cover is closed.
Cover Open
Replace Micro Switch
No
Replace Side Cover
No
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
Replace IH PBA
Yes
Check IH_24V(CN7- 15)
with Side Cover closed
Yes
Check resistance AC
connector below 10ohm
Yes
No
No
No
Low Heat Error is displayed on LCD
Is IH Fan ok?
Fuser Error
No
Yes
Go to Cover Open Session
Replace Fuser
Replace IH FAN
Check
IH_FAN_24V(CN7- 16)
Troubleshooting
Service Manual
6-25
6-26
Replace Main Controller
No
Replace Drum, Toner or Both
Yes
Check DEVE Harness and
RF_ID Coupler
Yes
Is RF_ID Tag attached on
Drum and Toner?
No
No
Drum Cartridge and Toner Container can't be detected.
RF_ID
RF
_ID
Replace Deve Harness, RF_ID
Coupler or Both
Replace Drum, Toner or Both
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
End
OK
Re-printing OK/NG?
Adjust the Sheet Guide Retard
to the regular position
NO
Is there the Sheet Guide
Retard in the regular
position?
Double feeding occurs
NG
Yes
End
OK
Replace the MEA Unit Cassette
Replace the MEA Unit Roller PU (Pick -up)
Yes
NG
Is there any problem in
the MEA Unit -Roller
PU(Pick -up)?
NO
Replace the SET
MEA Unit-Cassette : JC97-02273A
MEA Unit-Roller PU : JC97-02259A
Sheet Guide Retard : JC63-00747A
Troubleshooting
Service Manual
6-27
6-28
End
OK
Replace the MEA Unit - Cassette or the MEA
Unit -Roller PU
Yes
Does the MEA Unit Roller PU rotate?
Pull out the tray and start the printing job with
Leg - M_Act No Paper on by lift upside.
Check if the MEA Unit - Roller PU is rolling or not
Yes
Paper still inside the
Tray ?
Check where the jammed paper is
located
NO
NO
End
OK
Check the Clutch -5K Z32 and the Motor DC Main work or not. If needed, replace them.
- You can make sure of it by actuating the Leg - M_Act
Ready DP. If it does not work, replace the HVPS Jungfrau.
Check if the Photo Interrupter(Registration Sensor)
works or not
NO
OK
OK
End
End
MEA Unit-Cassette : JC97-02273A
HVPS-Jungfrau : JC44-00103A
Check if any object or obstruction is on
the path before the forward roller. If any,
remove it or them.
Motor DC-Main : JC31-00038A
Leg-M_Act Ready DP : JC61-01435A
Photo Interrupter : 0604-001095
Clutch-5K Z32 : JC66-00994A
MEA Unit-Roller PU : JC97-02259A
Leg-M_Act No Paper : JC61-01350A
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
End
OK
Check if any object or obstruct is
on the path. If any, remove it.
Yes
Lead edge of paper is
located between the Leg M_Act Ready DP and Leg M_Actuator Exit?
Check where the jammed paper
is located
NO
Replace HVPS -Jungfrau
NO
Check the Photo Interrupter (Exit
Sensor) works properly or not.
Yes
Does the Photo
Interrupter
(registration sensor)
work properly?
Yes
Push the Leg -M-Act
Ready DP
down, and check if it returns
back quickly.
NO
Replace the
Leg -M_Act
Ready DP
End
End
Replace HVPS -Jungfrau
NO
End
Photo Interrupter : 0604-001095
Photo Interrupter : 0604-001095
HVPS-Jungfrau : JC44-00103A
Leg-M_Actuator Exit : JC61-01384A
Leg-M_Act Ready DP : JC61-01435A
Troubleshooting
Service Manual
6-29
6-30
MEA UNIT-HOLDER ADF RUBBER: JC97-01846A
ELA HOU-DADF Sub : JC96-03579A
PBA Main-MFP : JC92-01690B
PBA Sub-DADF : JC92-01691A
Check if ADF is pulling
Document
Yes
End
Replace the PBA
Main-MFP
Error message is disappeared?
Either the Motor step - DADF or PBA Sub DADF are defected. Replace ELA HOU DADF Sub Ass'y
Replace MEA UNIT HOLDER ADF RUBBER
Yes
Yes
Motor Step-DADF : JC31-00044A
NO
Either the Motor step - DADF or PBA Sub DADF are defected. Replace ELA HOU DADF Sub Ass'y
NO
Check if driving unit works
NO
Check if there is Document jam
message regardless of removing
the document form ADF tray
NO
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
Yes
Is the same LED
message shown again?
Turn on the printer
Turn off the printer and
stay for 5minute
Over Heat Error
Check how the LED is
displayed
Yes
Is the same LED
message shown
Try to do print job
End
End
Turn off the printer. Replace the
ELA HOU -Fuser
Turn off the printer. Replace the
ELA HOU -Fuser
NO
ELA HOU-Fuser : JC96-03724A
OK
NO
Troubleshooting
Service Manual
6-31
6-32
Yes
Is the same LED
message shown again?
Turn on the printer
Try to reboot
Low Heat Error
Check how the LED is
displayed
Yes
Is the same LED
message shown
Try to do print job
End
End
Turn off the printer. Replace the
ELA HOU -Fuser
Turn off the printer. Replace the
ELA HOU -Fuser
NO
ELA HOU-Fuser : JC96-03724A
OK
NO
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
Yes
Is the same LED
message shown again?
Turn on the printer
Turn off the printer and
stay for 5minute
Over Heat Error
Check how the LED is
displayed
Yes
Is the same LED
message shown
Try to do print job
End
End
Turn off the printer. Replace the
ELA HOU -Fuser
Turn off the printer. Replace the
ELA HOU -Fuser
NO
ELA HOU-Fuser : JC96-03724A
OK
NO
Troubleshooting
Service Manual
6-33
6-34
End
YES
again to print out.
Replace the drum cartridge and try
YES
Damaged cleaning
blade in the drum
cartridge .
black band is located.
Check where vertical black line or vertical
Vertical Black Band
Vertical Black Line and
NO
End
YES
again to print out.
Replace the drum cartridge and try
YES
Contamination of the
charge roller in the
drum cartridge.
2. Charge roller
1. Cleaning blade
[ Wrong Part ]
2. Dark black vertical band occur in the printing.
1. Straight thin black vertical line occurs in the printing.
[ Descripition]
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
If the problems are not solved,
replace the drum cartridge.
If the fuser is defective,
voids occur periodically at
the top of a black image.
It may occur when Burr
and foreign substances
are on the window of
the drum cartridge frame.
.
Foreign matter or toner
particles between the
magnetic roller and doctor
blade
Foreign matter stuck onto
the window of internal
lenses of LSU mirror.
NO
NO
NO
Check where vertical white line is located.
Vertical White Line
YES
YES
YES
YES
1. LSU
White vertical voids in the image.
Remove if found.
Open the right cover and check ribs that
corresponds to the position of the voids.
Remove the foreign matter and burr of the
exposure window. (the drum cartridge frame)
Replace the drum cartridge and try again to
print out.
Clean the LSU window with recommended
cleaner(IPA) Clean the window with a clean
cotton swab.
2. Drum Cartridge
[ Wrong Part ]
[ Descripition]
Troubleshooting
Service Manual
6-35
6-36
Bad contact the dev bias
in drum cartrige.
NO
Abnormal output from the
HVPS.
NO
Bad contact caused by the
toner stains between the high
voltage terminal in the HVPS
and the one in the set.
NO
The state of low toner in
drum cartridge when the
toner of toner cartridge is
almost consumed.
Check the state of light image.
Light Image
YES
YES
YES
YES
Replace the drum cartridge.
Replace the HVPS.
Clean up the contaminated area of
contact terminal by the toner.
Replace the toner cartridge.
2. HVPS
1. Toner Cartridge
[ Wrong Part ]
The printed image is light, with no ghost.
[ Descripition]
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
Charge voltage is not
turned because of
contamination between
power supply in the side
of the drum cartridge and
charge terminal of HVPS.
NO
Check the charge voltage
output of HVPS
NO
HVPS
Check the state of the
connector which connects
the engine board and
Check the state of Black image.
Dark Image or Black Image
YES
.
Clean the high voltage charge
terminal.
Replace the HVPS.
YES, No charge voltage in the HVPS board
Re-connect connector of the
engine board and HVPS.
YES, the state of connector is not good.
1. HVPS
[ Wrong Part ]
The printed image is dark or black.
[ Descripition]
Troubleshooting
Service Manual
6-37
6-38
(carrier + toner)
The life of the
developer
NO
Check the voltage
output of HVPS
NO
Does recycle
paper be used?
Check the state of background
Background
The drum cartridge is not
guaranteed if using recycle paper.
.
The Drum cartridge is basically
designed to print 60K sheets with
simplex mode. If it prints more than
60K sheets, a background can be
occurred. Replace the drum
cartridge when the life of it has
been ended.
YES, the life of it has been ended
Replace the HVPS.
YES, the voltage output is not good in the HVPS board.
YES
2. Low Q/M of developer (High T/C of developer)
1. HVPS
[ Wrong Part ]
Light dark background appears in whole area of the printing.
[ Descripition]
Troubleshooting
Service Manual
Samsung Electronics
Samsung Electronics
Replace the toner supply motor.
NO(abnormal)
Is the toner supply
motor normal?
NO
The state of rotation of
toner feed roller in the
toner cartridge.
Check the toner supply error.
Toner Supply Error
Replace the toner cartridge.
YES, the rotation of feed roller is not good.
2. Toner supply DC motor
1. Toner feed roller
[ Wrong Part ]
The poor supply of toner in the printing.
[ Descripition]
Troubleshooting
Service Manual
6-39