Epson EPL-6100 Reference Manual page 187

10. Close the printer cover until it clicks shut.
11. Hold down the N Start/Stop and the @ Information buttons on
the control panel simultaneously while turning on the printer.
Continue holding down these buttons until the Ready (green)
and Error (red) lights turn on.
The photoconductor counter is cleared.
Note:
You also can reset the photoconductor counter from the printer
driver. For more details, see "Resetting the photoconductor counter"
on page 40 (Windows) or "Resetting the photoconductor counter"
on page 70 (Macintosh).
Replacing Consumable Products
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