Epson TM-C3500 Series Technical Reference Manual page 154

LCD display
SERVICE SOON ##
PRINTER ERROR ##
##: 7B or 7C
PRINTER ERROR ##
##: 20 to 54, 64 to 75,
A9, B0 to DA
SERVICE REQD. ##
##: A0 to A3
Failure in firmware
updating
154
Description
The product is near the end of
its service life.
Environmental temperature is
out of spec.
Paper jam
Poor autocutter operation
Irregular ambient temperature
Malfunction
The product is beyond its ser-
vice life.
Failed to update the firmware.
Recovery method
Because the internal parts of the printer
are near the end of their service life, pre-
pare to replace the printer, or prepare a
printer for replacement.
Environmental temperature is too low (7B)
or too high (7C). Set operating tempera-
ture from 10 to 35C {50 to 95C}. Turn on
the power again.
1. Turn the printer off.
2. Open the roll paper cover.
3. Check the paper path for a paper jam.
If jammed paper is found, remove it
completely.
4. Set a paper.
5. Turn the printer on.
If the error occurs again, perform repairs.
Perform repairs.
Turn the power on again, and if the error
occurs again, perform repairs.