Epson Stylus CX7800
5.Before you open the new ink cartridge package, shake it four or five times. Then remove it from the package.
Caution:
Do not remove or tear the label on the cartridge; otherwise, ink will leak.
Do not touch the green chip on the front of the cartridge. This can damage the ink cartridge.
6.Place the new ink cartridge into the cartridge holder and push it down until it clicks into place.
7.Replace any other cartridges that need to be replaced.
8.Close the ink cartridge cover and press it until it clicks into place.
9. Close the scanner.
10.Press the x Start button. The Epson Stylus CX7800 begins charging ink and the P On light starts flashing. This takes about one minute. When it’s finished, the P On light stops flashing and remains on.
Caution:
Never turn off the Epson Stylus CX7800 while the P On light is flashing or you’ll waste ink.
11.Press the Setup/Utilities button to return to the previous mode.
Aligning the Print Head
If your printouts look grainy or blurry, or you see light or dark horizontal banding, you may need to align the print head.
Note:
Banding may also occur if your cartridges are low on ink or you need to clean the print head.
1.Turn on the Epson Stylus CX7800.
2.Load several sheets of paper.
3.Windows: 
printer icon on your taskbar (in the lower right corner of your screen). Select Print Head Alignment.
Macintosh OS X: Open the Applications folder and select EPSON Printer Utility. Select your Epson Stylus CX7800 in the printer list, click OK, and select Print Head Alignment.
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