Epson STYLUS COLOR 680 Manual page 141

Note:
b
If the error light is flashing, you cannot clean the print head.
Replace the appropriate ink cartridge first.
2. Access the printer software. For instructions, see "Accessing
the printer software" on page 2-2.
3. Click the Utility tab, then click the Head Cleaning button.
4. Follow the on-screen instructions.
The P power light flashes while the printer performs the
cleaning cycle. It takes about thirty seconds to complete.
c
Caution:
Never turn off the printer while the P power light is flashing.
Doing so may damage the printer.
5. When the P power light stops flashing, click Print nozzle
check pattern in the Head Cleaning dialog box to confirm
that the head is clean and to reset the cleaning cycle.
8-5
Maintenance