Troubleshooting Using The Error Led - Epson TM-L90 series Service Manual

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Troubleshooting Using the ERROR LED

You can learn the cause of a failure by checking the ERROR LED code. The following table
shows problems and solutions to repair the printer. Numbers in the "Solutions" column indicate
the order to use to check the problem. If you cannot determine the cause of the problem after
checking all the solutions listed, go back to Table 1-1, earlier in this chapter.
Automatically recoverable errors
Automatically recoverable errors are not abnormalities.
Table 2-3 Automatically recoverable errors
Error
ERROR LED Blinking Pattern
Print head temperature error
Approx. 320 msec
Roll paper cover open error
Paper layout error
Note:
With the memory switch, the "roll paper cover open" error can be specified either as an "automatically
recoverable error" or as a "recoverable error."
Rev.B
Description
The temperature of the print
head is extremely high.
Printing is not performed
correctly due to a cover open.
Label paper or the black mark is
not detected, or the paper
layout of the paper installed in
the printer and the setting of the
paper layout defined by the
GS ( E command do not match.
TM-L90 Service Manual
Recovery
Recovers automatically when the
print head cools.
Replace the autocutter unit.
Recovers automatically when the roll
paper cover is closed.
Recovers automatically when
prpper label paper or the black
mark installed in the printer.
Troubleshooting Guide 2-5