Lexmark X642 User Manual

Your MarkNet N8000 series internal print  
server is not set up properly or is not  
connected properly  
Verify that you have properly configured the printer  
for network printing.  
Solving printing problems  
Lexmark™ X642  
Troubleshooting  
Guide  
The operator panel display is blank  
Turn the printer off, wait about 10 seconds, and turn  
the printer back on.  
See the drivers CD or the Lexmark Web site for  
information.  
If the Ready message does not appear, turn the  
printer off and call for service.  
Online technical support  
Technical support is available on our Lexmark Web  
You are using the wrong interface cable,  
or the cable is not securely connected  
Make sure you are using a recommended interface  
cable.  
The message USB device  
unsupportedappears when using  
a USB device  
For information regarding tested and approved USB  
flash memory devices, see our Lexmark Web site at  
site at www.lexmark.com.  
Checking an unresponsive  
printer  
Make sure the connection is secure.  
Held jobs do not print  
If the printer is not responding, first make sure:  
KnowledgeBase to search for Direct USB printing.  
The power cord is plugged into the printer and  
a properly grounded electrical outlet.  
The electrical outlet is not turned off by any  
switch or breaker.  
The printer is not plugged into any surge  
protectors, uninterrupted power supplies, or  
extension cords.  
A formatting error has occurred  
Print the job. (Only part of the job may print.)  
Delete the job.  
Free up additional printer memory by scrolling  
through the list of held jobs and deleting others  
you have sent to the printer.  
Jobs do not print  
The printer is not ready to receive data  
Make sure Readyor Power Saver appears on the  
display before sending a job to print.  
Other electrical equipment plugged into the  
outlet is working.  
The printer is turned on.  
The printer cable is securely attached to the  
printer and the host computer, print server,  
option, or other network device.  
The printer has insufficient memory  
The specified output bin is full  
Remove the stack of paper from the output bin.  
Print the job. (Only part of the job may print.)  
Delete the job.  
Free up additional printer memory by scrolling  
through the list of held jobs and deleting others  
you have sent to the printer.  
The specified tray is empty  
Load paper in the tray.  
Once you have checked each of these possibilities,  
turn the printer off and back on. This often fixes the  
problem.  
The printer has received invalid data  
Delete the job.  
You are using the wrong printer driver or  
are printing to a file  
Verify you are using the printer driver  
associated with the printer.  
Job takes longer than expected to  
print  
Printing multi-language  
PDFs  
If you are using a USB port, make sure you are  
running Windows 98/Me, Windows 2000,  
Windows XP, or Windows Server 2003 and  
using a Windows 98/Me, Windows 2000,  
Windows XP, or Windows Server 2003  
compatible printer driver.  
1 Open the document you want to print in Adobe  
The job is too complex  
Acrobat.  
Reduce the complexity of your print job by  
eliminating the number and size of fonts, the number  
and complexity of images, and the number of pages  
in the job.  
2 Click the printer icon.  
3 Check the Print as image box.  
4 Click OK.  
Consistent misfeeds or jams in the  
drawer  
Try the following:  
Guides in the selected tray are not set to  
the appropriate position for the size  
paper loaded.  
Solving 2000-sheet drawer  
problems  
Move the guides in the tray to the correct position.  
The elevator tray does not raise when  
the loading door is closed, or the  
elevator tray does not lower when the  
door is opened and the elevator button is  
pushed  
Flex the paper.  
Turn the print media over.  
The paper has absorbed moisture due to  
high humidity.  
Load paper from a fresh package.  
Check the following:  
Drawer is properly installed.  
Print media is loaded correctly.  
Print media is not damaged.  
Print media meets specifications.  
Guides are positioned correctly for the print  
media size selected.  
Check the following:  
Store paper in its original wrapper until you load it.  
The printer is properly attached to the 2000-  
sheet drawer.  
The printer is powered on.  
The power cord is plugged firmly into the back  
of the 2000-sheet drawer.  
The Paper Jam message remains  
after you remove the jammed  
paper.  
Clear paper from the entire paper path.  
The power cord is plugged into an outlet.  
The outlet has power.  
Service messages  
The page that jammed does not  
reprint after you clear the jam.  
A service message indicates printer failure that may  
require service.  
The elevator tray lowers unexpectedly  
Check to see if the printer is out of print media or has  
a jam.  
Turn the printer off, wait about 10 seconds, and then  
turn the printer on.  
Set Jam Recovery to Auto or On.  
For more information, see the Menus and Messages  
Guide  
If the error recurs, write down the error number, the  
problem, and a detailed description. Call for service.  
More than one sheet of print media is  
fed, or a sheet is fed improperly  
Remove the print media in the printer paper path,  
and check the stack to ensure the print media has  
been loaded properly. Be sure to remove the top and  
bottom sheets of each ream of paper that is loaded.  
Blank pages feed into the output  
bin  
Load the correct type media for your print job, or  
change the Paper Type to match the type of media  
loaded.  
Solving paper feed  
problems  
Paper frequently jams  
A jam occurs  
For more information, see the Menus and Messages  
Remove the print media in the printer paper path,  
and check the stack to ensure the print media has  
been loaded properly. Be sure to remove the top and  
bottom sheets of each ream of paper that is loaded.  
Guide.  
You are using paper that does not meet  
the printer specifications.  
Use recommended paper and other specialty media.  
Original documents misfeed in the  
ADF  
See the Card Stock & Label Guide available on the  
Lexmark Web site at www.lexmark.com for detailed  
specifications.  
Adjust the guides toward the media until they  
lightly rest against the edge of the media.  
If the pick pad is worn, replace the pick pad.  
Rubber feed rollers do not turn to  
advance print media  
Check the following:  
For information that can help prevent jams from  
The power cord is plugged firmly into the back  
of the 2000-sheet drawer.  
The power cord is plugged into an outlet.  
The outlet has power.  
occurring, see the Clearing Jams Guide.  
Print quality  
You have loaded too much paper or too  
many envelopes.  
Make sure the stack of paper you load does not  
exceed the maximum stack height indicated at the  
front of the tray or on the multipurpose feeder.  
troubleshooting  
To help isolate print quality problems, print the “Print  
defects guide” and check for repeating defects. If  
repeating defects are not appearing, print the Print  
Quality Test Pages.  
the cartridge. Repeat this procedure multiple  
times until the print remains faded. When the  
print remains faded, replace the print cartridge.  
Change the Toner Darkness setting in the  
Quality menu.  
Toner fog or background shading  
appears on the page  
Printing the print defects guide  
1 Touch the help icon (?).  
2 Touch Print Defects Guide.  
Change the Brightness setting in the Quality  
menu.  
Change the Contrast setting in the Quality  
menu.  
If you are printing on an uneven print surface,  
change the Paper Weight and Paper Texture  
settings in the Paper menu.  
Printing the print quality test  
pages  
3 Turn the MFP off.  
Check the print cartridge to make sure it is  
installed correctly.  
The Toner Darkness setting may be too dark.  
Change the Toner Darkness setting in the  
Quality Menu.  
Verify the environment is Class B.  
Replace the charge rolls.  
Replace the print cartridge.  
4 Hold down the number 2 and number 6 keys on  
Verify the correct print media is being used.  
Verify you are using the correct printer drivers.  
Verify the environment is Class B.  
the numeric pad.  
5 Continue to hold the buttons, and turn the MFP  
on.  
Toner smears or print comes off  
the page  
Hold the buttons for about 10 seconds while the  
MFP is powering up, then release the buttons.  
The MFP enters the Configuration menu.  
6 Touch Print Quality Pages.  
7 Touch Exit Configuration Menu.  
Entire page is white  
The printer restarts and returns to the home  
page.  
Solving print quality  
problems  
If you are printing on an uneven print surface,  
change the Paper Weight and Paper Texture  
settings in the Paper menu.  
Verify the print media is within the printer  
specifications. See the User’s Guide for more  
details.  
Print is too light.  
Make sure the packaging material is removed  
from the print cartridge.  
Check the print cartridge to be sure it is installed  
correctly.  
Toner appears on the back of the  
printed page  
Toner is on the transfer roll. To help prevent this, do  
not load print media that is smaller than the page  
size of the job to be printed.  
The toner may be low. To utilize the remaining  
toner, remove the cartridge by gripping the  
handles with both hands. With the cartridge  
arrows pointing downward, firmly shake the  
print cartridge side-to-side and front-to-back  
several times to redistribute the toner. Reinstall  
the cartridge. Repeat this procedure multiple  
times until the print remains faded. When the  
print remains faded, replace the print cartridge.  
The toner may be low. To utilize the remaining  
toner, remove the cartridge by gripping the  
handles with both hands. With the cartridge  
arrows pointing downward, firmly shake the  
print cartridge side-to-side and front-to-back  
several times to redistribute the toner. Reinstall  
Open and close the printer top front cover to run the  
printer setup cycle and clean the transfer roll.  
Streaks appear on the page  
Characters have jagged or uneven  
edges  
The job prints, but the top and side  
margins are incorrect  
The toner may be low. To utilize the remaining  
toner, remove the cartridge by gripping the  
handles with both hands. With the cartridge  
arrows pointing downward, firmly shake the  
print cartridge side-to-side and front-to-back  
several times to redistribute the toner. Reinstall  
the cartridge. Repeat this procedure multiple  
times until the print remains faded. When the  
print remains faded, replace the print cartridge.  
If you are using preprinted forms, make sure the  
ink can withstand temperatures of 230°C  
(446°F).  
Change the Print Resolution setting in the  
Quality menu to 600 dpi, 1200 Image Q,  
1200 dpi, or 2400 Image Q.  
Make sure the Paper Size setting in the Paper  
menu is correct.  
Make sure the margins are set correctly in your  
software application.  
Enable Enhance Fine Lines.  
If you are using downloaded fonts, verify the  
fonts are supported by the printer, the host  
computer, and the software application.  
Verify the print media type and print tray type  
settings match.  
Verify you are using the correct printer drivers.  
Verify the environment is Class B.  
Ghost images appear  
Make sure the Paper Type setting in the Paper  
menu is correct.  
Verify the environment is Class B.  
Replace the charge rolls.  
Replace the print cartridge.  
Replace the photoconductor kit.  
Printing is too dark  
Part or all of the page is printed in  
black  
Some of the print is cut off on the  
sides, top, or bottom of the media  
Move the guides in the tray to the proper positions for  
the size loaded.  
Print is skewed or inappropriately  
slanted  
Move the guides in the tray to the proper positions for  
the size loaded.  
Change the Toner Darkness setting in the  
Quality menu.  
Change the Brightness setting in the Quality  
menu.  
Change the Contrast setting in the Quality  
menu.  
Verify the environment is Class B.  
Check the print cartridge to see if it is installed  
correctly.  
Transparency print quality is poor.  
Use only transparencies recommended by the  
printer manufacturer.  
Make sure the Paper Type setting in the Paper  
menu is set to Transparency.  
Touch the left arrow to remove more shadow  
detail.  
Solving copy quality  
problems  
Solving fax problems  
The fax document takes a long  
time to transmit  
Touch Options, then under Content, change the  
setting to Text, and then set the resolution to  
Standard.  
Solving scan quality  
problems  
Unwanted background is visible  
Adjust the Background Removal setting under  
Copy Options Advanced Imaging. Touch the  
right arrow to remove more background.  
The file size is too big when I scan  
a document to the network  
The images on the fax I sent are  
not clear  
Touch Options, then under Content, change the  
setting to Text/Photo or Photo.  
Unwanted patterns (Moire) appear  
when a document is copied using  
Photograph mode  
Change the content mode to Printed Image under  
Copy Options Content.  
Touch Options, then under Resolution,  
decrease the output resolution.  
Touch Options, then under Content, change  
the Color option to black and white.  
Touch Options, then under Content, change  
the setting to Text.  
Increase the output resolution.  
Note: This will increase the amount of  
time required for the scan and will  
increase the quality of the fax  
output.  
Vertical or horizontal lines are  
noticed on copied pages  
Text characters do not look sharp  
when I scan a document to the  
network  
Clean the ADF scanner glass and backing material.  
Caller ID is not shown  
Touch Options, then under Resolution,  
Black text is too light or  
disappearing  
increase the output resolution.  
Touch Options, then under Content, change  
the setting to Text.  
If your region supports caller ID, you may have to  
change the default setting. There are two settings  
available, FSK (pattern 1) and DTMF (pattern 2).  
Contact your telecommunications company to  
determine which pattern or switch setting to use.  
Adjust the Darkness setting under the Copy  
menu. Touch the right arrow to increase the  
darkness setting.  
Change the content mode to Text under  
Copy Options Content.  
Black text is too light or  
disappearing  
Adjust the Darkness setting. Touch the right  
arrow to increase the darkness setting.  
Change the content mode to Text.  
Adjust the Background Removal setting under  
Advanced Imaging. Touch the left arrow to  
remove less background.  
Adjust the Background Removal setting under  
Copy Options Advanced Imaging.  
Touch the left arrow to remove less background.  
Adjust the Contrast setting under Copy   
Options Advanced Imaging. Touch the  
right arrow to add more contrast.  
Adjust the Contrast setting under Advanced  
Imaging. Touch the right arrow to add more  
contrast.  
Adjust the Shadow Detail setting under  
Copy Options Advanced Imaging.  
Touch the left arrow to decrease shadow detail.  
Adjust the Shadow Detail setting under  
Advanced Imaging. Touch the left arrow to  
decrease shadow detail.  
The copy looks washed out or  
overexposed  
Adjust the Background Removal setting under  
Copy Options Advanced Imaging.  
Touch the left arrow to remove less background.  
Adjust the Shadow Detail setting under  
Copy Options Advanced Imaging.  
Unwanted background is visible  
Adjust the Background Removal setting under  
Advanced Imaging. Touch the right arrow to remove  
more background.  

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