Epson TM-T20II

18
Unrecoverable Errors
If the same error occurs again even after turning the power back on, contact your dealer or a
Epson service center.
CAUTION
Turn off the power immediately when an unrecoverable error occurs.
Error Error description Error LED flashing pattern
Memory R/W error After R/W checking, the printer
does not work correctly.
High voltage error The power supply voltage is
extremely high.
Low voltage error The power supply voltage is
extremely low.
CPU execution error The CPU is executing an
incorrect address.
Internal circuit
connection error
Internal circuits are not
connected correctly.
LED ON
LED OFF
Approx. 160 ms
LED ON
LED OFF
Approx. 160 ms
LED ON
LED OFF
Approx. 160 ms
LED ON
LED OFF
Approx. 160 ms
LED ON
LED OFF
Approx. 160 ms
Approx. 2.56 s