Lexmark T640dtn User Manual

Clearing printer jams
91
Clearing jams
3Close the duplex rear door. Make sure it snaps into place.
4Press .
270 and 280 Paper jams
Paper jams in this group have been divided into 27x and 28x groups. If you have an output expander, high-capacity output 
stacker, or the 5-bin mailbox, see 27x Paper Jam Check Bin x. If you have a finisher, see 28x Paper Jam Check Finisher.
27x Paper Jam Check Bin x
To clear a jam in the output expander, high-capacity output stacker, or the 5-bin mailbox:
1If the paper is...

Clearing printer jams
92
Clearing jams
3Remove the jammed media.
4Close the output bin rear doors, and make sure all doors are secure.
5Press .
28x Paper Jam Check Finisher
To clear a jam in the finisher:
1Push the finisher rear door latches in toward the center. The rear door will open and drop down.
2Remove the jammed media.
3Close the rear door, and make sure the door is secure.
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Clearing staple jams
93
Clearing jams
4Lift the front edge of the finisher output bin cover until it locks into position.
5Remove the stack of print media.
6Close the finisher output bin cover.
7Press .
Clearing staple jams
A 28x Stapler Jam message indicates staples are jammed in the stapler. This requires removing the staple cartridge 
holder from the printer.
1Lift the front edge of the finisher output bin cover until it locks into position.
2Remove the print media.
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Clearing staple jams
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Clearing jams
3Press the latch to open the stapler access door.
4Firmly pull the colored tab to remove the staple cartridge holder from the stapler.
5Use the metal tab to lift the staple guard, and then pull out the sheet of staples.
Discard the entire sheet.
6Remove any loose staples from the staple guard.
7Look through the clear covering on the bottom of the cartridge holder to make sure no staples are jammed in the 
entry throat.
8Press down on the staple guard until it snaps...

Clearing staple jams
95
Clearing jams
9Push the cartridge holder firmly into the stapler until the cartridge holder clicks into place.
10Close the stapler access door.
11Close the finisher output bin cover.
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3
Contents
Chapter 1:
Identifying printers  ........................................................................................................................................... 6
Understanding the printer operator panel  ........................................................................................................ 9
Chapter 2:
Windows ...........................................................................................................................................................

Enabling operator panel menus
97
Administrative support
Enabling operator panel menus
1Turn the printer off.
2Press and hold   and   while turning the printer on.
3Release the buttons when you see a clock.
CONFIG MENU appears on the first line of the display.
4Press   until the   appears next to Panel Menus, and then press  . 
5Press   until the   appears next to Enable, and then press  . 
The following messages appear briefly in succession: Submitting selection and Enabling Menus.
The operator panel...

Adjusting Power Saver
98
Administrative support
Adjusting Power Saver
To adjust the Power Saver setting:
1Make sure the printer is on and Ready appears on the display.
2Press   on the operator panel.
3Press   until the   appears next to Settings, and then press  .
4Press   until the   appears next to Setup Menu, and then press  .
5Press   until the   appears next to Power Saver, and then press  .
6Using the numeric pad or the right and left arrows on the operator panel, enter the number of minutes for...

Encrypting the disk
99
Administrative support
Encrypting the disk
Warning:All resources on the hard disk will be deleted. (Resources residing in flash memory or in RAM remain 
unaffected.)
Note:This setting is only available when a hard disk is installed.
1Turn the printer off.
2Press and hold   and   while turning the printer on.
3Release the buttons when you see a clock.
CONFIG MENU appears on the first line of the display.
4Press   until the   appears next to Disk Encryption, and then press  .
5Press...

Setting security using the Embedded Web Server (EWS)
100
Administrative support
3Under Other Settings, click Security.
4Click Create Password if one has not been set previously. If a password has been set before, click Change or 
Remove Password.
Using the secure Embedded Web Server
The SSL (Secure Sockets Layer) allows for secure connections to the Web server within the print device. You can connect 
to the Embedded Web Server more securely by connecting to the SSL port instead of the default HTTP port....