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7. What does the Blinking Lights notifications mean in P2500 Printer?
1, the first LED is indicating paper and WIFI status, the second LED is indicate printer and toner cartridge
status;
2, Green light means normal, Red light means error, orange (just the second LED has) mean toner low or
empty.
8. How to check the toner’s serial number location:
Please check with below pictures: