Question about Lexmark T640 Laser Printer

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How do you change the laser print head assembly on a lexmark t640n

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Shenanigans!
I've been fixing Lexmark T640's for a week now and Print Heads are easy!!! Don't let someone scare you into thinking you can't do it yourself just so they get more business and can over charge you to repair something!

1. Remove side and top covers
2. Remove cover for System Board
3. Unplug 7-pin connector from System Board. It's 6-white 1-black wires.
4. Remove connectors from Print Head, should be 2. 1 in front, 1 in rear.
5. Remove the 4 screws holding down the Print Head
6. Take out print head and insert new one.
7. Install by following directions in reverse! :-)

Posted on May 07, 2010

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For this particular concern, there are complicated and sensitive parts involved. I suggest you contact the Authorized Service Provider or contact Lexmark Technical Support for assistance.

Posted on May 04, 2010

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Posted on Jan 02, 2017

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There are no "Print Heads" in a laser printer. You should contact Lexmark to resolve this issue. Laser printers are incredibly complex and jam packed with little bits and pieces so only the highly trained should ever attempt to service them. Lexmark may be able to refer you to a local authorized repair center that can repair the printer for you.

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Is there a guide or video that shows how to replace the printhead on a Lexmark T632 printer?


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Feb 09, 2011 | Lexmark T632 Laser Printer

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I have 111.05 print head service problem,


This error message pertains to an issue with theprinter's laser assembly 1Power off the printer and disconnect the power cordfrom the outlet. 2 Wait at least 30 seconds. If possible, plug thepower cord directly into a grounded wall outlet. 3 Power on the printer to see if the error clears. 4 If the error remains, contact Lexmark for additionalassistance.

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Take out the power cable from the printer and then keep the power button pressed for 30 seconds. After that connect the power cable and try to print.

May 26, 2010 | Lexmark T640N Networkable Mono Laser...

1 Answer

MON IMPRIMANTE LEXMARK T640N AFFICHE UN CODE D


Service Fuser Error appears when the fuser does not warm to the required temperature. For this error on this Lexmark model T640n, the manual states you should power off the printer and power it back on, and if it is not plugged into a wall power point, change it to a power point mounted directly on the wall. Personally, I never got a Lexmark printer to work doing this, but this is in the manual. If this won't help, and the printer is under warranty, you should log it in with the servicing company.

If the printer is out of warranty, your next option is to change the fuser which costs around $350, so I think you would be better off getting a new printer unless you find a second hand one on Ebay.

May 26, 2010 | Lexmark T640n Laser Printer

1 Answer

920.06 SERVICE FUSER ERROR


A 920 fuser error indicates that the fuser unit in the printer is below the proper temperature for printing. Turn off the printer for 30 seconds. Bypass any surge device or power strips, plug the printer straight to the power outlet in the wall. Make sure the printer is an operating environment where the temperature is above 16°C (60°F). If none of the steps above correct the issue, the fuser unit or possibly the power supply unit on the printer will need to be replaced. This will require a service action on the printer. I hope I can assist you more on this.

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I had a similar problem on a HP Laserjet printer. It turned out to be dust coating one side of the mirror in the laser assembly. It isn't difficult ot fix with the HPs, but I don't know specifically about the Lexmarks. I would imagine about the same difficulty level. Just make sure you don't put fingerprints on the mirror (you'll see them on every page printed).

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T640 has ethernet port but not on networkh-m-dThaepbd'tsuomn,ndih


Please, go through the printer's menus and make sure that the Ethernet port is activated.

You can also do this by printing out the printer's menus and checking the network configuration on the printer.

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Please remove the cartridge and then re-install it to make sure it is seated properly. Then close the front cover door and make sure it latches completely. Now turn the printer back on.

Mar 31, 2009 | Lexmark T640n Laser Printer

1 Answer

I have a Lexmark T632 that is used very often. Constantly printing over 1000 pages daily and I always get the error message Print head Error 934 - Lost Lock condition but once I shut down the printer and...


These error codes indicate a problem with the mirror motor circuit in
the printhead assembly or the mirror motor cable to the system board
cable or system board assembly. Check the continuity of the mirror
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