Epson TM-L90 Developer's Manual page 54

Confidential
Error Codes
There are three types of error possible: Automatically Recoverable Errors, which can be
corrected without any action by the user, Recoverable Errors, which can be corrected by the
action of a user, and Unrecoverable Errors, which cannot be corrected by a user.
They are automatically corrected when the temperature of the head returns to normal or when
the cover is closed.
Automatically recoverable errors
Although normal printer operation is no longer possible when automatically recoverable errors
occur, they do not represent printer failure. They are easily corrected through use of the printer's
controls.
Note:
Print head temperature error is not an abnormality.
Automatically recoverable errors
Error name
Paper roll cover open
error (when the
recoverable error is
selected) (*1)
Print head
temperature error (*2)
Paper layout error (*3) Cannot detect the label or
Note:
*1: The printer cover open error operation can be selected with the memory switch.
*2: If an abnormal temperature is detected, the printer generates a CPU execution error as an
unrecoverable error.
*3: In the condition that types of paper is selected as the label or the paper with black mark and power on
or cover closed, the printer generates the paper layout error if the paper is not loaded correctly.
If use different paper layout which is set NV memory (refer to page 4-1), set again by memory switch
setting mode (refer to page 3-13), GS ( A (Function 64) or GS ( E.
Rev. A
Type of error
Printing on the paper roll is
not performed correctly
due to a cover-open
The temperature of the
print head is extremely
high.
the black mark
Error LED Flash code
Approx.320 ms
TM-L90 Developer's Guide
Recovery measure
Recovers automatically
when the cover is closed.
Recovers automatically
when the print head
cools.
Recovers automatically
when the label on black
mark is loaded correctly.
Description of Functions 3-5