Lexmark T642n User Manual

							Selecting print media
71
Understanding paper and specialty media guidelines
–Have postage stamps attached.
–Have any exposed adhesive when the flap is in the sealed or closed position.
–Have nicked edges or bent corners.
–Have rough, cockle, or laid finishes.
Use envelopes that can withstand temperatures of 230°C (446°F) without sealing, excessive curling, wrinkling, or 
releasing hazardous emissions. If you have any doubts about the envelopes you are considering using, check with 
the envelope supplier.
Load only one size of envelope at a time in the envelope feeder.
A combination of high humidity (over 60%) and the high printing temperatures may seal the envelopes.
Labels
The printer can print on many labels designed for use with laser printers. These labels are supplied in letter size, A4 size, 
and legal size sheets. Label adhesives, face sheet (printable stock), and topcoats must be able to withstand temperatures 
of 230°C (446°F) and pressure of 25 pounds per square inch (psi).
Try a sample of any labels you are considering using with the printer before purchasing a large quantity.
For detailed information on label printing, characteristics, and design, see the Card Stock & Label Guide available on the 
Lexmark Web site at www.lexmark.com/publications.
Note:Labels are one of the most difficult print media for laser printers. All printer models require a special 
fuser cleaner for label applications to optimize feed reliability. See Ordering supplies for infor mation 
on obtaining a label fuser cleaner.
After printing approximately 10,000 pages of labels (or each time you replace the print cartridge), complete the following 
steps to maintain printer feeding reliability:
1Print five sheets of paper.
2Wait approximately five seconds.
3Print five more sheets of paper.
When printing on labels:
Set the Paper Size/Type menu item to Labels in the Paper menu. You can set the Paper Size/Type from the printer 
operator panel, the printer driver, the Local Printer Setup Utility, or from MarkVision.
Feed vinyl labels from the standard 250- or 500-sheet trays or the optional 250- or 500-sheet drawers. For vinyl 
labels, set the Paper Type to Labels, the Labels Texture to Smooth, and the Label Weight to Heavy or set the 
Paper Type to vinyl labels and the texture and weight to normal.
Do not load labels with paper or transparencies in the same source; mixing print media can cause feeding 
problems and print quality problems.
Do not use label sheets with a slick backing material.
Use full label sheets. Partial sheets may cause labels to peel off during printing, resulting in a jam. Partial sheets 
also contaminate the printer and your cartridge with adhesive, and could void the printer and cartridge warranties.
Use labels that can withstand temperatures of 230°C (446°F) without sealing, excessive curling, wrinkling, or 
releasing hazardous emissions.
Do not print within 1 mm (0.04 in.) of the edge of the label, of the perforations, or between die-cuts of the label.
Do not use label sheets that have adhesive to the edge of the sheet. We recommend zone coating of the adhesive 
at least 1 mm (0.04 in.) away from edges. Adhesive material contaminates the printer and could void the warranty.
If zone coating of the adhesive is not possible, a 1.6 mm (0.1 in.) strip should be removed on the leading and 
driver edge, and a non-oozing adhesive should be used.
Remove a 1.6 mm (0.1 in.) strip from the leading edge to prevent labels from peeling inside the printer.
Portrait orientation is preferred, especially when printing bar codes.
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							Storing print media
72
Understanding paper and specialty media guidelines
Do not use labels that have exposed adhesive.
Card stock
Card stock is single ply, and has a large array of properties, such as the moisture content, thickness, and texture, that can 
significantly affect print quality. See Supported print media for information on the preferred weight and for the grain 
direction of print media.
Try a sample of any card stock you are considering using with the printer before purchasing a large quantity.
After printing approximately 10,000 pages of card stock (or each time you replace the print cartridge), complete the 
following steps to maintain printer feeding reliability:
1Print five sheets of paper.
2Wait approximately five seconds.
3Print five more sheets of paper.
When printing on card stock:
Set the Paper Type menu item in the Paper menu to Card Stock from the operator panel, from the printer driver, in 
the Local Printer Setup Utility, or from MarkVision.
Be aware that preprinting, perforation, and creasing can significantly affect the print quality and cause print media 
handling or jamming problems.
Avoid using card stock that may release hazardous emissions when heated.
Do not use preprinted card stock manufactured with chemicals that may contaminate the printer. Preprinting 
introduces semi-liquid and volatile components into the printer.
We recommend the use of grain short card stock.
Storing print media
Use the following guidelines to avoid paper feeding problems and uneven print quality.
Store paper in an environment where the temperature is approximately 21°C (70°F) and the relative humidity is 
40%.
Store cartons of paper on a pallet or shelf rather than directly on the floor.
If you store individual packages of paper out of the original carton, make sure they rest on a flat surface so the 
edges do not buckle or curl.
Do not place anything on top of paper packages.
Store paper in its original wrapper until you load it into the printer.
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							Avoiding jams
73
Understanding paper and specialty media guidelines
Avoiding jams
Use appropriate print media (paper, transparencies, labels, and card stock) to help ensure trouble-free printing. See 
Supported print media for more information.
Note:Try a limited sample of any print media you are considering using with the printer before purchasing 
large quantities.
By selecting the appropriate print media and loading it properly, you can avoid most jams. See Loading standard trays 
and optional trays, Loading the multipurpose feeder, or Loading the 2000-sheet drawer for detailed tray-loading 
instructions.
The following hints can help you avoid jams:
Use only recommended print media.
Do not overload the print media sources. Make sure the stack height does not exceed the maximum height 
indicated by the stack line on the labels in the sources.
Do not load wrinkled, creased, damp, or curled print media.
Flex, fan, and straighten print media before you load it. If jams do occur with print media, try feeding one sheet at 
a time through the multipurpose feeder.
Do not use print media that you have cut or trimmed yourself.
Do not mix print media sizes, weights, or types in the same print media source.
Make sure the recommended print side is loaded in the source according to your simplex or duplex needs.
Keep print media stored in an acceptable environment. See Storing print media.
Do not remove trays during a print job.
Push all trays in firmly after loading them.
Make sure the guides in the trays are properly positioned for the size of print media you have loaded. Make sure 
the guides are not placed too tightly against the stack of print media.
If a jam occurs, clear the entire media path. See Clearing jams for more information.
Note:If you have a recurring paper jam, see Paper frequently jams. for more information.
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							3
Contents
Chapter 1: Learning about the printer  .............................................................................. 6
Identifying printers  ........................................................................................................................................... 6
Understanding the printer operator panel  ........................................................................................................ 9
Chapter 2: Installing drivers for local printing  ............................................................... 11
Windows ........................................................................................................................................................ 11
Macintosh ...................................................................................................................................................... 15
UNIX/Linux ..................................................................................................................................................... 16
Chapter 3: Installing drivers for network printing  ......................................................... 17
Printing a network setup page  ....................................................................................................................... 17
Assigning a printer IP address  ....................................................................................................................... 17
Verifying the IP settings  ................................................................................................................................. 18
Windows ........................................................................................................................................................ 18
Macintosh ...................................................................................................................................................... 22
UNIX/Linux ..................................................................................................................................................... 24
NetWare ......................................................................................................................................................... 24
Chapter 4: Installing and removing options  ................................................................... 25
Installing input options  ................................................................................................................................... 25
Installing a duplex unit  ................................................................................................................................... 27
Installing memory or option cards  .................................................................................................................. 28
Accessing the printer system board  ............................................................................................................... 28
Installing or removing a memory card  ............................................................................................................ 30
Installing or removing a flash memory or firmware card  ................................................................................ 32
Installing an option card  ................................................................................................................................. 34
Replacing the shield  ...................................................................................................................................... 35
Chapter 5: Printing ............................................................................................................36
Sending a job to print  ..................................................................................................................................... 36
Printing from a USB flash memory device  ..................................................................................................... 36
Canceling a print job  ...................................................................................................................................... 38
Printing the menu settings page  .................................................................................................................... 39
Printing a network setup page  ....................................................................................................................... 39
Printing a font sample list  ............................................................................................................................... 40
Printing a directory list  ................................................................................................................................... 40
Printing confidential and held jobs  ................................................................................................................. 40
Printing on specialty media  ............................................................................................................................ 43
Loading standard trays and optional trays  ..................................................................................................... 44
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T640T642T644
Input capacity 250 sheets 500 sheets 500 sheets
Output capacity 250 sheets 500 sheets 500 sheets
Standard memory, non network/network 64MB/64MB 64MB/128MB 128MB/128MB
Maximum memory capacity, non network/network 576MB/576MB 576MB/640MB 640MB/640MB
Option card connectors 1 2 2
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Operating systemGo to page
Windows11
Windows Server 2003, Windows 2000, Windows XP, Windows 98 SE, Windows Me, 
Windows NT 4.x11
Windows 95 and Windows 98 (first edition)12
Serial printing12
Macintosh15
UNIX/Linux16
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23 Paper jam, 
3 pages jammed
Continue
Show areas
1. Open 
manual feed 
door.
Show areas
Show duplex
Show rear door
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MessageAction
42.xy Cartridge region mismatch
Note:x = the printer region, y = the cartridge 
regionInstall the correct cartridge for the printer region.
Region codes are:
0 = Worldwide
1 = Americas
2 = EMEA
3 = Asia
9 = Undefined
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							Determining the status of supplies
75
Maintaining the printer
Determining the status of supplies
The printer operator panel alerts you once a supply item or maintenance is required. You can also view the status of 
supplies in the printer on the operator panel unless the printer is printing or in a busy state. The header or gray area at the 
top of the display will indicate the printer is Ready and lets you know if any trays are low. Selecting Status / Supplies on 
the display will open the Status / Supplies screen where you can view the status of the various trays and open the View 
Supplies screen to view the current status of your print cartridge.
Conserving supplies
Several settings in your application software or on the display let you conserve toner and paper. For more information on 
changing these settings, see the Menus and Messages Guide on the publications CD.
SupplyMenu selection itemWhat the setting does
Toner Toner Darkness in the 
Settings
Æ Quality MenuLets you adjust the level of toner released on a sheet of print media. The 
values range from 1 (lightest setting) to 10 (darkest setting).
Note:When toner is low, firmly shake the cartridge to redistribute any 
remaining toner. See Ordering a print cartridge for more information.
Print media Multipage Print in the 
Settings
Æ Finishing MenuCauses the printer to print two or more page images on one side of a 
sheet. Values for Multipage Print are 2 Up, 3 Up, 4 Up, 6 Up, 9 Up, 12 
Up, and 16 Up. Combined with the duplex setting, Multipage Print lets 
you print up to 32 pages on one sheet of paper (16 images on the front 
and 16 on the back).
Duplex in the Settings
Æ 
Finishing MenuDuplex printing is available when you install an optional duplex unit. It 
lets you print on both sides of a sheet of paper.
Use your software application 
or printer driver to send a 
Verify Print job.Lets you examine the first copy of a multiple-copy job to be sure it is 
satisfactory before you print the other copies. If the job is unsatisfactory, 
you can cancel the job.
See Printing and deleting held jobs for more information about a 
Verify Print job.
View supplies
Ready
Tr a y  1  L o w Status / Supplies
Held jobs
Toner Low
Staples OK
View Supplies
Ready. Tray 1 Low, Tray 2 Low…Status / Supplies
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							Ordering supplies
76
Maintaining the printer
Ordering supplies
To order supplies in the U.S., contact Lexmark at 1-800-539-6275 for information about Lexmark Authorized Supplies 
Dealers in your area. In other countries or regions, visit the Lexmark Web site at www.lexmark.com, or contact the place 
where you bought the printer.
Ordering a print cartridge
When the  88 Toner is message appears or when you experience faded print, remove the toner cartridge. Firmly shake it 
side-to-side and front-to-back several times to redistribute the toner, then reinsert it and continue printing. Repeat this 
procedure multiple times until the print remains faded. When the print remains faded replace the print cartridge.
Have a new cartridge available when the current one no longer prints satisfactorily.
The recommended print cartridges specifically designed for the printer are:
Part numberDescriptionAverage cartridge yield1T640T642T644
For the Americas
2
64015SA Return Program Print Cartridge 6,000 standard pages X X X
64015HA High Yield 
Return Program Print Cartridge21,000 standard pages X X X
64415XA Extra High Yield 
Return Program Print Cartridge32,000 standard pages X
64004HA High Yield Return Program Print Cartridge 
for Label Applications21,000 standard pages X X X
64404XA Extra High Yield Return Program Print 
Cartridge for Label Applications32,000 standard pages X
Other available print cartridges
64035SA Print Cartridge 6,000 standard pages X X X
64035HA High Yield Print Cartridge 21,000 standard pages X X X
64435XA Extra High Yield Print Cartridge 32,000 standard pages X
For Europe, the Middle East and Africa
3
64016SE Return Program Print Cartridge 6,000 standard pages X X X
1 Declared yield value in accordance with ISO/IEC 19752.2 Designed for use only in the Americas.3 Designed for use only in Europe, Middle East, and Africa.4 Designed for use only in Asia Pacific Region, Australia, and New Zealand.
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							Ordering supplies
77
Maintaining the printer
You can use the packing material from the new cartridge to ship the old cartridge back to Lexmark for recycling. See 
Recycling Lexmark products for more information.
Ordering a maintenance kit
80 Scheduled maintenance advised appears on the display after 300,000 pages have printed to let you know it is time 
to replace printer maintenance items. Order a maintenance kit when 80 Scheduled maintenance advised first appears 
on the display. The maintenance kit contains all the items necessary to replace the pick rollers, the charge roll, transfer 
roller, and the fuser.
Note:Using certain types of media may require more frequent replacement of the maintenance kit. Although 
the charge roll, transfer roller, and pick rollers are contained within the maintenance kit, they should 
also be individually ordered and replaced as necessary. 64016HE High Yield 
Return Program Print Cartridge21,000 standard pages X X X
64416XE Extra High Yield 
Return Program Print Cartridge32,000 standard pages X
64004HE High Yield Return Program Print Cartridge 
for Label Applications21,000 standard pages X X X
Other available print cartridges
64036SE Print Cartridge 6,000 standard pages X X X
64036HE High Yield Print Cartridge 21,000 standard pages X X X
64436XE Extra High Yield Print Cartridge 32,000 standard pages X
For the Asia Pacific Region
4
64017SR Return Program Print Cartridge 6,000 standard pages X X X
64017HR High Yield 
Return Program Print Cartridge21,000 standard pages X X X
64417XR Extra High Yield 
Return Program Print Cartridge32,000 standard pages X
64004HR High Yield Return Program Print Cartridge 
for Label Applications21,000 standard pages X X X
64404XR Extra High Yield Return Program Print 
Cartridge for Label Applications32,000 standard pages X
Other available print cartridges
64037SR Print Cartridge 6,000 standard pages X X X
64037HR High Yield Print Cartridge 21,000 standard pages X X X
64437XR Extra High Yield Print Cartridge 32,000 standard pages X
Part numberDescriptionAverage cartridge yield1T640T642T644
1 Declared yield value in accordance with ISO/IEC 19752.2 Designed for use only in the Americas.3 Designed for use only in Europe, Middle East, and Africa.4 Designed for use only in Asia Pacific Region, Australia, and New Zealand.
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							Recycling Lexmark products
78
Maintaining the printer
See the following table for the maintenance kit part number for your specific printer. 
Replacement of the fuser must be performed by an authorized service technician.
For finisher maintenance information, see the StapleSmart™ Reference that came with your finisher.
Ordering charge rolls
We recommend ordering new charge rolls when toner fog or background shading appears on printed pages. Order 
Lexmark part number 40X0127.
Ordering a transfer roller
Order Lexmark part number 40X0130.
Ordering pick rollers
Order Lexmark part number 40X0070.Order new pick rolls when the paper fails to properly feed from the tray.
When ordering pick rollers, you need one set per input tray excluding the multipurpose feeder.
Ordering a label fuser cleaner
A special label fuser cleaner should be used for label applications to optimize feeding reliability. To order this item, visit our 
Web site at www.lexmark.com, or contact your Lexmark representative.
Label fuser cleaners are not recommended for duplex printing.
Ordering staple cartridges
Staple cartridges hold 3,000 staples. Use part number 11K3188 to order a pack of three staple cartridges. For information 
on clearing a staple jam, see 
When Staples Low or Staples Empty appears on the operator panel display, insert a new staple cartridge in the finisher. 
See the illustrations inside the stapler access door for more information.
If Staple Alarm is set to Single or Continuous, the alarm is sounded, the printer stops printing, and the Load 
staples message appears. Install a new staple cartridge, or press   to clear the message and continue 
printing.
Recycling Lexmark products
To return Lexmark products to Lexmark for recycling:
1Visit our Web site:
www.lexmark.com/recycle
Maintenance kit forPar t numbers
T640, T642, and T644 40X0102 (100 V) 
40X0100 (110 V) 
40X0101 (220 V)
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							Moving the printer
79
Maintaining the printer
2Follow the instructions on the computer screen.
Moving the printer
Follow these guidelines to move the printer within the office or to prepare the printer for shipment.
CAUTION:Follow these guidelines to avoid injuring yourself or damaging the printer.
Always use at least two people to lift the printer.
Always turn off the printer using the power switch.
Disconnect all cords and cables from the printer before attempting to move the printer.
Failure to repackage the printer properly for shipment can result in damage to the printer not covered by the printer 
warranty.
Damage to the printer caused by improper moving is not covered by the printer warranty.
Moving the printer within the office
The printer can be safely moved from one location within an office to another following these precautions:
The printer must remain in an upright position.
Any cart used to move the printer should have a surface able to support the full footprint of the printer.
Severe jarring movements may cause damage to the printer and must be avoided.
Preparing the printer for shipment
To transport the printer by vehicle or by commercial carrier, the printer must be repackaged for shipment using the proper 
packaging. The printer package must be securely fastened to its pallet. Do not use a shipping or transport method that 
requires the printer to be shipped without a pallet. The printer must stay upright throughout the shipment. If you do not have 
all the original packaging, contact your local service representative to order the repackaging kit. Additional instructions for 
repackaging the printer are provided in the repackaging kit.
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							3
Contents
Chapter 1:
Identifying printers  ........................................................................................................................................... 6
Understanding the printer operator panel  ........................................................................................................ 9
Chapter 2:
Windows ........................................................................................................................................................ 11
Macintosh ...................................................................................................................................................... 15
UNIX/Linux ..................................................................................................................................................... 16
Chapter 
Printing a network setup page  ....................................................................................................................... 17
Assigning a printer IP address  ....................................................................................................................... 17
Verifying the IP settings  ................................................................................................................................. 18
Windows ........................................................................................................................................................ 18
Macintosh ...................................................................................................................................................... 22
UNIX/Linux ..................................................................................................................................................... 24
NetWare ......................................................................................................................................................... 24
Chapter 4:
Installing input options  ................................................................................................................................... 25
Installing a duplex unit  ................................................................................................................................... 27
Installing memory or option cards  .................................................................................................................. 28
Accessing the printer system board  ............................................................................................................... 28
Installing or removing a memory card  ............................................................................................................ 30
Installing or removing a flash memory or firmware card  ................................................................................ 32
Installing an option card  ................................................................................................................................. 34
Replacing the shield  ...................................................................................................................................... 35
Chapter 5:36
Sending a job to print  ..................................................................................................................................... 36
Printing from a USB flash memory device  ..................................................................................................... 36
Canceling a print job  ...................................................................................................................................... 38
Printing the menu settings page  .................................................................................................................... 39
Printing a network setup page  ....................................................................................................................... 39
Printing a font sample list  ............................................................................................................................... 40
Printing a directory list  ................................................................................................................................... 40
Printing confidential and held jobs  ................................................................................................................. 40
Printing on specialty media  ............................................................................................................................ 43
Loading standard trays and optional trays  ..................................................................................................... 44
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T640T6T644
Input capacity 250 sheets 500 sheets 500 sheets
Output capacity 250 sheets 500 sheets 500 sheets
Standard memory, non network/network 64MB/64MB 64MB/128MB 128MB/128MB
Maximum memory capacity, non network/network 576MB/576MB 576MB/640MB 640MB/640MB
Option card connectors 1 2 2
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Operating systemGo to page
Windows11
Windows Server 2003, Windows 2000, Windows XP, Windows 98 SE, Windows Me, 
Windows NT 4.x11
Windows 95 and Windows 98 (first edition)12
Serial printing12
Macintosh15
UNIX/Linux16
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23 Paper jam, 
3 pages jammed
Continue
Show areas
1. Open 
manual feed 
door.
Show areas
Show duplex
Show rear door
Downloaded From ManualsPrinter.com ManualsDownloaded From ManualsPrinter.com Manuals
MessageAction
42.xy Cartridge region mismatch
Note:x = the printer region, y = the cartridge 
regionInstall the correct cartridge for the printer region.
Region codes are:
0 = Worldwide
1 = Americas
2 = EMEA
3 = Asia
9 = Undefined
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