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Try to print another type of document, i.e : doc, jpg. If it 's no problem at another type of document, the problem is on PDF file ( not allowed printing, security setting), or on software for opening PDF file.
Blocked print head nozzles Inkjet printers need to be used frequently to prevent blocked print head nozzles. You may have blocked print head nozzles. Try the printer maintenance to clear the printer nozzles. After several deep cleaning attempts and there is no improvements in the print then a new print head is required.
The Epson Stylus CX7400 Color All-in-One printer prints up to 28 pages per minute of black ...Stylus CX7400 ink jet all-in-one, 69 black ink cartridge (T069120), ... Best of all, you don't need to wait for an available computer to get started. .... Also, given my experience, one paper jam can cause your printer to ... www.amazon.com/Epson-Stylus-CX7400-Printer.../B000SDXZX8
Try to use the copy function to isolate the issue, if it is from the unit or from the computer. If copy is blank, run a nozzle check (
left Menu button on the control panel
until you see Nozzle Check, then Press the Color Copy
button.) to see if all inks are shooting out. If nozzle check pattern is not good, do head cleanings ( Press the left Menu
button until you see HeadCleaning on the LCD screen.Press the Color Copy
check first if your printer can copy well. try to photocopy a document. and if it copies well, that means, its a problem on the part of the receiever, if it does not copy well, that means the scanner of your unit has a problem.
How often do you need to "copy" documents. Do you have a document scanner? Your Epson is a printer. You'll need a scanner to scan a document into your PC then you can print it out on your Epson. If you only need a copy once in a blue moon, and you don't have a scanner, save yourself a few bucks and just go to Kinko's or maybe even your local grocery store or library and run your copies there. They probably cost about 25 cents a page. A new scanner will run you about $100 bucks. If you decide that you need a scanner, you might even want to consider investing in a multi function printer which will scan-print-copy-fax. Hope this helps. If so, please remember to rate my solution. Thanks.
try to check the queue for pending document and cancel it if you find some. to do it:
control panel > printers & faxes(xp)printers(vista) > double click cx7400 icon - this is where you can check if there are pending docs. to dlete: on the same box click printers and select cancel all documents.
regarding enter valid product, where did you get the error from?
Turn the Epson unit off. Now lift the scanner cover and look on the left-side for a toggle switch with the familiar lock/unlock symbols. Change the switch to unlock, turn the unit back on, and test for proper functionality.
The following picture should help in locating the toggle switch: