Rev. H
Troubleshooting
4-1
TM-U220 Technical Reference Guide
Chapter 4
Troubleshooting
This section describes general troubleshooting.
4.1 LED Blinking Pattern
4.1.1 Error Types
The printer stops all printer operations for the selected paper section, goes offline, and the
ERROR LED blinks when an error is detected.
4.1.1.1 Errors that automatically recover
Note:
(*1) This conditions are selected by MSW 8-5, 8-8. When MSW 8-5 (mapping of the cover open status) is
off, the error hasn’t occurred but there is a “paper end error” instead. If MSW 8-8 is off, this error is
handled as an automatically recoverable error.
(* 2) Print head temperature error is not abnormal.
ERROR
Description
ERROR LED Blinking Pattern
Recovery
Roll paper cover
open error (when
recoverable error is
selected) (*1)
The roll paper cover is
opened when printing.
Recovers automatically
when the cover is
closed.
Print head
temperature error (*2)
The temperature of the
print head is extremely
high
Recovers automatically
when the print head
cools
160 ms
Summary of Contents for C31C514452
Page 1: ...TM U220 Technical Reference guide EPSON English Rev H 404455408 ...
Page 8: ...vii Rev H ...
Page 14: ...xiii Rev H ...
Page 30: ...1 16 General Information Rev H 1 7 1 2 Overview Type B ...
Page 31: ...Rev H General Information 1 17 TM U220 Technical Reference Guide 1 7 1 3 Overview Type D ...
Page 32: ...1 18 General Information Rev H ...
Page 80: ...3 38 Setup Rev H ...
Page 100: ...5 12 Application Development Information Rev H ...
Page 128: ...B 10 How to Install the Printer on a Wall with the WH 10 Rev H B 2 2 TM U220 Type D 5 14 146 ...
Page 130: ...C 2 Character Code Table Rev H C 2 Page 1 Katakana ...
Page 132: ...C 4 Character Code Table Rev H C 4 Page 3 PC860 Portuguese ...
Page 134: ...C 6 Character Code Table Rev H C 6 Page 5 PC865 Nordic ...
Page 138: ...C 10 Character Code Table Rev H C 10 Page 16 WPC1252 ...
Page 140: ...C 12 Character Code Table Rev H C 12 Page 18 PC852 Latin2 ...
Page 141: ...Rev H Character Code Table C 13 TM U220 Technical Reference Guide C 13 Page 19 PC858 Euro ...
Page 149: ...Rev H Character Code Table C 21 TM U220 Technical Reference Guide C 21 Page 254 Blank page ...
Page 150: ...C 22 Character Code Table Rev H C 22 Page 255 Blank page ...
Page 152: ...C 24 Character Code Table Rev H ...