!
error Epson

Error Code Service Req. (All lights flashing)

An error has occurred in the printer system.

? What Causes This

Unknown error condition detected by printer.

How to Fix It

  1. Note the error number displayed.
  2. Turn the printer off then on.
  3. If the message remains, contact EPSON as described on page 3.

Source: page 162 of the official manual

From the manual

Manual page 162 — Epson error Service Req. (All lights flashing)

This error code appears in:

Epson Printer