Lexmark t640 service manual

Ethernet, USB or parallel cable not included. General Specs. Weight lb. Packaged Size in. Packaged Weight lb. What's the difference between our Return Program supplies? Return Program supplies. Regular supplies. Other supplies. Browse Return Program supplies Best value. Browse other supplies. Staple Cartridge. Browse regular supplies.

Name Part Category Price Quantity. Parallel Cable foot. Removable Hard Disk Enclosure Kit. USB Cable 2-meter. Surge Protective Device, V. Monochrome Laser. Up to: Black: 35 ppm Letter. As fast as: Black: 6 seconds. Black: x dpi, IQ x dpi , x dpi, IQ x dpi. Standard: 2 Maximum: 6. Standard: pages 20 lb or 75 gsm bond Maximum: pages 20 lb or 75 gsm bond pages 20 lb or 75 gsm bond.

Up to: Standard: pages 20 lb or 75 gsm bond Maximum: pages 20 lb or 75 gsm bond. Standard Tray. Up to: pages per month 2. Standard: PDF 1. Windows , Windows NT 4.

Red Flag Linux Desktop 5. Novell NetWare 5. HP-UX TEC: 5. China PRC. DOS, Windows 3. For detailed information about new changes for this release , please refer to Technical White Paper under Universal Print Driver page or the Release Notes section.

The Package Creation Utility is also bundled inside this package and not available as a separate package. CVE Fixed. Lexmark Travel Print The Travel Print feature is an installable port to be used in conjunction with the Lexmark Universal Driver 1. Once downloaded, uncompress the file using the gunzip utility and install the package file with SAM or swinstall.

T Print 1. Instructions: Download the file. Double-click on the file to mount as a disk image. Open the disk image. Double-click the installer icon to begin installation. PrinterFileLoader X. This installer is distributed on a Disk Copy image. Double-click on this file to open Disk Copy, which will mount the image like a CD or hard disk.

You can then open the installers on the image. Disk Copy Lexmark Travel Print plug-in feature for Windows allows dynamic printer discovery and selection at print time. Lexmark Travel Print 2k. The Travel Print feature is a driver plug-in to the Lexmark Universal Driver that allows for dynamic printer discovery and selection at print time.

Once downloaded, install the package file with Redhat package manager rpm. Connector locations uses illustrations to identify the connector locations and test points on the printer. Preventive maintenance contains the lubrication specifications and recommendations to prevent problems.

Parts catalog contains illustrations and part numbers for individual FRUs. Comments No comments yet. Be the first!

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You acknowledge that all comments express the views and opinions of the original author and not those of the administrator. Press to view the value. Press Back to return to the main Configuration menu. Maintenance page counter reset Reset Maint Cnt After scheduled maintenance, the servicer needs to reset the page counter.

To reset the maintenance page count to zero: Select Reset Maintenance Count from the Configuration menu. Page Factory Defaults xx0 Factory Defaults This setting enables a user to restore all the printer settings to the original factory settings. Selections are Restore Base and Restore Network. Network does not appear unless you have a network printer. Page Font Sharpening xx0 Font Sharpening This setting allows a user to set a text point size below which the high frequency screens are used when printing font data.

For example, at the default 24, all text in font sizes 24 and less will use the high frequency screens. The values for this setting range from 0 to , and the default value is Page Menu Settings Page xx0 Menu settings page You can print a menu settings page to review the default printer settings and to verify your printer options are installed correctly. Press Menu to display Menus. Press until the appears next to Reports.

Press Press until the appears next to Menu Settings Page. Page Theory xx0 Theory Autocompensator operation The autocompensator is a paper pick device that generates its own normal force. This force generation is inherent in the fundamental design of the pick arm. If light media is used, it picks very gently. If a heavy media is used, it picks very aggressively. Page Autoconnect System, Paper Tray Options, Envelope Feeder-Electrical xx0 Autoconnect system, paper tray options, envelope feeder—electrical Autoconnect cabling and connectors The printer options make electrical connection automatically, requiring no external cables when the option is mechanically installed under the printer.

Communication between the option and the base printer stops when you remove an option. If repeating defects are not appearing, print the Print Quality Test Pages. Turn the printer off. Hold down , and turn the printer on. Press until Prt Quality Pgs is selected, and then press The pages are formatted.

Change the Toner Darkness setting in the Quality Menu. Page xx0 The quality menu operator panel options can be adjusted to help improve print quality.

Flex, fan, and restack the media, and place it into the multipurpose feeder. Load the print media. Slide the side guide toward the inside of the tray until it lightly rests against the edge of the media. Press Service Manual Lift the envelope weight. Remove all envelopes. If the jammed envelope has entered the printer and cannot be pulled out, remove the envelope feeder.

Lift the envelope feeder up out of the printer, and then set it aside. Page 23X And 24X Jams xx0 23x and 24x jams Paper jams in these areas can occur on the incline surface of a tray or across more than one tray. To clear these areas: Open the printer paper tray, and remove any jammed media. Open the duplex tray. To remove the media, pull up. Page And Paper Jam Remove Cartridge xx0 If you have an optional sheet feeder, open the front door, press the elevator button A to lower the tray, remove the jam, and make sure the stack of print media is neat and aligned.

Press and Paper Jam Remove Cartridge Push the release latch, and lower the multipurpose feeder. Page xx0 Place the print cartridge aside. Note: Do not leave the cartridge exposed to light for extended periods. Note: The print media may be covered with unfused toner, which can stain garments and skin.

Pull the print media up and toward you. Warning: If the print media does not move immediately when you pull, stop pulling. Otherwise continue with step 2. Open the printer rear door. Remove the jammed media. Close the rear door. Press Diagnostic aids Depending on the media location, pull the media either up or down.

Close the duplex rear door. Make sure it snaps into place. Page And Paper Jams xx0 and Paper Jams Paper jams in this group have been divided into 27x and 28x groups.

Close the output bin rear doors, and make sure all doors are secure. Press 28x Paper Jam Check Finisher To clear a jam in the finisher: Push the finisher rear door latches in toward the center. The rear door will open and drop down. Page xx0 Lift the front edge of the finisher output bin cover until it locks into position.

Remove the stack of print media. Close the finisher output bin cover. This requires removing the staple cartridge holder from the printer. Lift the front edge of the finisher output bin cover until it locks into position. Remove the print media. Page xx0 Press down on the staple guard until it snaps securely into place.

Push the cartridge holder firmly into the stapler until the cartridge holder clicks into place. Close the stapler access door. Page xx0 Service Manual Page Repair Information xx0 4. Repair information Warning: Read the following before handling electronic parts. Page Adjustment Procedures xx0 Adjustment procedures Fuser solenoid adjustment Perform the fuser solenoid adjustment whenever you replace the fuser solenoid.

Adjust the fuser solenoid while installed in the printer. Adjust the screw on the eccentric mounted on the solenoid housing to provide an air gap between the rear of the solenoid stator and the solenoid armature. Page Paper Alignment Assembly Adjustment xx0 Paper alignment assembly adjustment Do the alignment assembly adjustment whenever you replace the alignment assembly.

Always print a copy of the Quick Test Page before making any adjustments to the alignment assembly reference adjustment screw. When replacing the alignment assembly, it is necessary to back the reference adjustment screw out far enough to remove the old assembly and install the new one.

Page xx0 Step B Print a copy of the Quick Test Page, and check the margin adjustments printed on the test page. The reference screw can be adjusted without loosening the locknut. Page Removal Procedures xx0 Removal procedures CAUTION: Remove the power cord from the printer or wall outlet before you connect or disconnect any cable or electronic board or assembly for personal safety and to prevent damage to the printer.

Page Redrive Cap Cover Removal xx0 Redrive cap cover removal Pull up on the right side of the redrive cap cover to remove. Remove the redrive cap cover. Paper support removal Raise the paper support, and lift to release the latches. Remove the paper support. Service Manual Press the two left door latch buttons A , and open the left door. Release the top hinge from the latch. Repair information Page Redrive Door xx0 Lift the door to release the bottom from the pin B , and remove the door.

Redrive door With the redrive door partially open, lift and free the left side. Remove the redrive door. Open the upper and lower front covers. Remove the print cartridge. Remove the right front cover mounting screw A. Page xx0 Remove the right rear cover mounting screw C. Press the two latches to remove the redrive assembly.

Page xx0 Press the latch D firmly to release the front of the right cover. Pull up and out on the right cover to release the three cover retainers E at the bottom. Note: When replacing the right side cover, make sure the three cover retainers are correctly located in the appropriate slots in the right side frame.

Page xx0 Disconnect the cables. Note: It may be necessary to remove the operator panel cable from the cable clip C to be able to disconnect the cable from the operator panel. Remove the upper front cover.

Note: If you are replacing the upper front cover, remove the upper front cover outer bezel and upper front cover latch. Remove the screw A holding the latch and spring to the upper front cover. Installation note: The spring B is installed as shown. Open the upper front cover.

Remove the two small upper front cover outer bezel mounting screws A. Pull up to remove the outer bezel. Note: If available, place a soft, clean cloth on the open lower front cover. The clear inner bezel B is not connected and may fall. Pull upward on each tray hinge to remove the tray from the two mounting posts. Remove the outer system board shield. Remove the two screws A holding the top of the left handle holder in place.

Use the tab B to lift out the left handle holder. Right cover handle holder removal Remove the right side cover. Turn the printer on its back. Remove the two screws A holding the right frame extension. Remove the two screws B securing the left frame extension. Remove the screw A securing the pass thru plate.

Carefully remove the plate until it is loose. Remove the fuser to system board DC cable B secured through the plate. Note: Note the routing of the fuser card to system board DC cable. Remove the right cover. Remove the redrive cap. Page xx0 Remove the paper bin full sensor flag from the mounting bracket. Unlatch the front right and front left cover posts, and remove the cover. Remove the inner shield. Remove the gear guard. Remove the power takeoff shaft and spring A through the bottom of the printer.

Place your thumb on the top of the gear, and press firmly down and away. Note: You need to exert firm pressure to snap the bevel gear out. Page xx0 Installation Remove any washer that may be present A and discard. Lubricate areas A that engage the journal B with grease from the provided packet.

Place the new washer C on the bevel gear shaft. Insert the bottom portion and press or pull into position. Note: You should hear two distinct snaps. Disconnect the printhead laser cable from J2 on the system board. Remove the three screws securing the cartridge duct A. Note: It may be necessary to pull the main fan cable B up and out of the way to remove the duct.

Reconnect the printhead laser cable. Page Developer Drive Assembly Removal xx0 Developer drive assembly removal Remove the system board and inner shield. Remove the two short screws A and the one long screw B securing the developer drive assembly. Remove the developer drive assembly. Remove the developer drive coupler kit. Remove the shaft drive and coupler. ESD cover removal Open the multipurpose tray, and remove the tray from the two mounting posts.

Remove the fuser wick assembly cover. Remove the redrive assembly. Remove the fuser mounting screws A. Pull the cables free and remove the fuser. Fuser exit sensor removal Remove the fuser. Page xx0 Installation Move the fuser exit sensor flag out of the way to clip the sensor securely into the cover. Connect the fuser exit sensor cable.

Snap the bottom fastener of the sensor cover into place in the lower exit guide, and use a small flat bladed screwdriver to ease the sensor cover into the clips. Note the position of the spring A in relation to the flag B. Carefully ease the right arm C until the fuser exit sensor cover releases the flag and spring. Spring replacement Place the spring on the left pin A. Page xx0 Rotate the bent end C of the spring to add tension, place the pins between the sensor cover arms, and rest the bent end against the sensor cover frame.

Note: After replacing the sensor, flag, and spring, make sure the flag moves freely and returns. You may need to allow them to cool before handling them. Remove the fuser assembly. Disconnect the fuser lamp AC cable from the right side of the top cover assembly. Remove the two screws A from the right side fuser lamp contact cover. Page xx0 Remove the fuser lamp.

Warning: The lamp is under spring tension, and care must be used when removing the lamp from the fuser. Grip the lamp by the ceramic end piece, and remove it from the fuser assembly. Be careful not to touch the glass, as skin oils and acids can reduce the life of the lamp.

Remove the screw A securing the narrow media sensor cover to the fuser. With a thumbnail, release the catches B holding the sensor cover to the lower exit guide C in place. Note: You may need to move the narrow media flag out of the way to remove the sensor. Page xx0 Replacement Move the narrow media flag out of the way to clip the sensor securely into the cover. Connect the fuser narrow media cable. Snap the bottom fastener of the sensor cover into place in the lower exit guide, and rock the cover up until the top fastener snaps securely.

Carefully ease the right arm C of the sensor cover just far enough apart to release the flag and spring. Note: After replacing the sensor, flag, and spring, make sure the flag moves properly. Remove the right side cover. Do not use excessive force in the removal. Page xx0 Route the cable through the lower rectangular opening E. Note the thermistor cable routing A and disconnect the thermistor cable at the fuser control board.

Disconnect the AC fuser lamp cable B from the top right side of the fuser cover. Page xx0 Carefully remove the two screws C from the right side of the fuser lamp contact cover D. Release the latch E and remove the cover. Remove the screw F on the left side and the screw G on the right side that attach the fuser upper cover assembly to the fuser frame. Fuser transfer plate removal Remove the upper paper deflector. Remove the transfer roll.

Remove the inner paper deflector. Remove the developer drive. Disconnect the gear release link A from the hole in charge roll link B.

Note: Lift the upper front cover to make it easier to remove the link. Remove the upper paper deflector assembly. Remove the MPF lower deflector assembly. Place the printer on its side. Gently pry the inner paper deflector from the left and right mounting posts A located on the bottom of the printer, and remove the deflector.

Loosen the MPF lower front cover. Page Integrated Tray Autocompensator Assembly Removal xx0 Integrated tray autocompensator assembly removal Remove the paper tray. Remove the left door. Remove the outer shield. Place the printer on its back. Disconnect the autocompensator motor cable A from the system board J Page xx0 Locate the integrated tray autocompensator assembly B on the bottom of the printer, and disconnect the autocompensator arm bias spring C.

Note: When you remove the spring, note the larger loop attaches to the side frame. Remove the C-clip D that rests against the right side frame from the autocompensator pivot shaft. Disconnect the autocompensator sensor cable E from the assembly.