Epson TM-T20 Technical Reference Guide

Chapter 1 Product Overview
19
1
Unrecoverable Errors
Printing is n o longer possible when unrecoverable errors occur. The printer must be repaired.
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

Epson TM-T20 Specifications

General

Autocutter	Yes
Print Method	Line thermal
Paper Width	79.5 ±0.5 mm
Interface	USB, Ethernet
Dimensions	140‎ x 199 x 146 mm (Width x Depth x Height)
Power Supply	External power supply
Paper Thickness	0.06 - 0.085 mm