Lexmark T640 thumping noise in exit area when feeding envelopes or transparencies from manual feed, no problem with bond,or plain paper, no image problem on envelope when noise is made.
Lexmark says that this is a feature called Envelope Enhance. Two rollers 'thump' to remove air pockets in the envelopes to prevent creasing and wrinkling. The "feature" can be turned off in the Paper Menu.
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This error indicated that the fuser assembly in the printer has failed and will need to be replaced. The fuser is the part of the printer that heats up and bonds or "fuses" the toner to the paper. This part is user replaceable, requiring just a Phillips screwdriver to change out. The fuser is available from many places online such as www.amazon.com the part number you will need to order is :40X2592
hi. I
wold like to know the output voltage from the several pins in the low
voltage area (the blue wires connection) in the power supplier of a
Lexmark T640.
There is usually no reset from the machine it is in your printer properties. Open the properties and set it to the tray you want it to feed from and usually there is a apply button try that.
Cheers
Al
After I had been attempting to adjust the paper guides in the feeder tray to accommodate statement-size paper, I finally "discovered" the drop-down door to the manual feed tray. Duh! This is a networked printer that I've only ever used for printing letter and legal sized documents until now.
The fuser is shot....this is the unit that uses heat and pressure to fuse the toner to the page. It is primarily when the pressure roller wears that you get crinkling and bad fusing, but I'm sure the upper sleeve has seen better days as well. These days it is (sadly) cheaper to replace this printer with a new little HP -only around $100 or so.
Not sure with a that Model, but on HP lasers, you just tell the printer that the trays both have the same paper in - i.e. Plain Letter. When one runs out, the other takes over.
If the printer thinks one tray is Plain and one is i.e. Bond paper, it won't switch trays even if the same physical paper is in there.
Go through the control panel on the front of the printer, or if it doesn't have one, you'll need to use the web interface to set this up.
Sorry for the delay, but I'm new to this site and still trying to figure out how this site works.
OK, are you printing this envelope field from an application such as Word or from an application that sends explicit cursor move commands?
Are you using the correct envelope definition?
Can you do a "Print To File" from the print page menu and then send the failing print job to me so I can look at the file in binary format and see what information is actually being sent to the printer.
The display is lit up, but no text
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