Lexmark T640dtn 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...

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...

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,...

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...

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 /...

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...

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...

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...

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...

3
Contents
Chapter 1:
Identifying printers  ........................................................................................................................................... 6
Understanding the printer operator panel  ........................................................................................................ 9
Chapter 2:
Windows ...........................................................................................................................................................