Epson SureColor F6070 User Manual page 69

1. If the message Chip unit expended. is displayed on the control panel screen, check
the remaining ink in the ink tank via the scale on the ink pack.
If the remaining ink level is greater than 2.8 inches (70 mm) from the base of the
ink tank:
We recommend continuing to use the printer until the remaining ink level is 2.8 inches
(70 mm) from the base of the ink tank so that you can use all the ink in a new ink pack
to refill the ink tank.
If the remaining ink level is 2.8 inches (70 mm) or less:
Proceed to Step 2.
Important:
When the remaining ink is 2.8 inches (70 mm) or more from the bottom of the ink tank and
you see a message stating Refill Ink Tank, it is time to replace the ink tank. We
recommend replacing the ink tank at this time. Replacements and repairs will be provided
for a fee.
During replacements and repairs, the ink in the tank is discarded. This is necessary
because fine dirt, dust, and other substances in the ink tank cause the ink tank to
malfunction.
The ink tank replacement interval depends on the usage environment and conditions.
For assistance, contact Epson Support. See "Where To Get Help" on page 97.
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Maintenance