Don't know how to move the cartridges to replace the ink.

Click on yhe following limk to see the online manual
Click to open the manual. Click on the Printing. Under this title you will see about ink cartridges.
Hope this will work for you.
If it is helpful. give a rating.
luciana44

http://www.epson.co.uk/Printers-and-All-In-Ones/Inkjet/Epson-Stylus-DX7450/Drivers-Support

Hi, one of your ink cartridges are empty, to check which cartridge needs replacing press the stop button, the carriage will move across to the left and sit below a pointer. This will point to the empty cartridge.
Press the stop button again, the carriage will move across either to display another empty cartridge or to the position to allow you to change the cartridge.
This can also be checked using the Status monitor software on the PC.

after the black cartridge moves to the ink changing position, push the 'ink' button one more time to move the carriage to the position to replace the colour cartridge. in some cases this will only work when the printer indicates that the color cartridge is empty.

Press and hold the data button

Fiend your solution direct from EPSON. Here is your solution...

http://www.epson.com/printer/prob676ijt65/solution

tiuy21

Yep that's the problem. It hasn't recognised the cartridge make sure it's inserted fully.

cannot change ink. Turn on, and just unplug power when cartridge is moving. cartridge will stop not in parking position. Just move head by hand to replacement position.

Try going to this site, hope it helps.
http://www.epson.co.uk/printers/durabrite_general_printers/Epson-Stylus-DX7450-printer-buy.htm
Good Luck.

You must surely have sorted this one out by now Doris! However, if you haven't, how to change print cartridges on a DX7450 is very clearly explained in the user handbook (on the CD that came with your printer). Insert the CD and select "Custom Install" then "Users Guide". Once its installed, double click the new Epson Icon on your screen and selct "Printing" then "Replacing Ink Cartridges". If you don't have a CD, download the User's Guide from the Epson website at http://www.epson.com - just choose your locale, then select Get Drivers and Support - Printers.

try doing this :

Reclamping the Ink Cartridges

Once you start the ink cartridge reclamp procedure, you must complete all the steps in one session.

1. Make sure the EPSON Stylus CX5400 is turned on and not printing.

2. Press a MENU button until you see CHANGE CARTRIDGE, then press the COLOR COPY BUTTON. The ink cartridges will move to the replacement position.

3. Lift up the unit's cover, to access the ink cartridges.

4. Pinch the tabs on the front and back of the cartridge, and lift it out of the printer.

5. Lower the cartridge back into its holder, then press down on the top of the cartridge until it clicks in place.
Caution: Don't touch the green circuit board on the back of the cartridge, as you may inhibit normal operation and printing.

6. Carefully lower the scanner and press it down until it clicks into place. The EPSON Stylus CX5400 begins charging the ink delivery system.
The On light flashes and the EPSON Stylus CX5400 makes noise. Charging takes about 30 seconds. When it's finished, the On light stops flashing and stays on steady.
Caution: Never turn off the EPSON Stylus CX5400 while the On light is flashing, unless the Stylus CX5400 hasn't moved or made noise for more than 5 minutes.

if the issue still persists - you need to call the vendor - it´s a hardware issue