Error Led; Error Codes - Epson TM-T88IV Technical Reference Manual

3.3.3 Error LED

Table 3-12 Error LED
Item
LED color
On states Off
On
Flashing

3.3.3.1 Error Codes

There are three possible error types: automatically recoverable errors, recoverable errors, and
unrecoverable errors.
❏ For automatically recoverable errors, the user does not have to take any action. The error
recovers automatically when the head temperature returns to normal or the cover is
correctly closed.
❏ A recoverable error recovers by resetting the printer or sending a command from the driver
after the cause of the error is eliminated.
❏ For unrecoverable errors, the printer or the power supply may be malfunctioning and must
be repaired.
Automatically recoverable errors
Although normal printer operation is no longer possible when automatically recoverable errors
occur, they do not represent printer failure. They can be recovered easily, as described below.
Table 3-13 Automatically recoverable errors
Error
Roll paper cover
open error
Print head
temperature error
Note:
If the temperature cannot be detected correctly, an internal circuit connection error occurs.
3-8 Application Development Information
Specifications
Red
Printer is performing regular operations or is online.
Offline (excluding self-test with the FEED button).
Error state.
Error description
The roll paper cover was
opened during printing.
A high temperature outside
the head drive operating
range was detected.
Error LED flash code
Approx. 160 ms
Recovery measure
Recovers automatically
when the roll paper cover
is closed.
Recovers automatically
when the print head cools.
Rev. A