Epson TM-L90 Manuel D'utilisation page 13

<Locations for the thermal head, its surroundings, and the roll paper holder>
Thermal print head
(heating section)
Running a Self-test
In self-test mode the printer will perform a series of internal diagnostics, and
then provide a listing of printer settings.
Having a printed self-test in hand when calling for technical support can help
speed the troubleshooting process.
Use the following procedure to start a self-test.
1. Close the roll paper cover.
2. While pressing the
printer. (Keep pressing the
printing.)
The printer prints out the various printer states.
3. When all printer states have been printed, make sure that the following
message is displayed and the
"If you want to continue SELF-TEST printing, please press Feed button."
The printer is now in the self test wait mode.
4. To start a test print, press the
self test wait mode.
5. Check that the following has been printed.
"*** completed ***"
This indicates that the printer has been initialized and made the
transition to the normal mode.
Wipe away any paper dust on the
thermal head and its surroundings.
(Feed) button on the control panel, turn on the
(Feed) button until the printer starts
(Paper) LED flashes.
(Feed) button when the printer is in the
TM-L90 User's Manual 13
Roll paper holder