Memory Switch Setting Mode; Paper Sensors; Sensors And Led Indicators; Sensors And Printing - Epson TM-U220A Specification

Confidential

3.8 Memory Switch Setting Mode

1) Memory switch setting functions
The following memory switches can be set by operating the button and opening and closing the
cover.
(1) Selection of the printer status when the cover is open
(2) Conditions for releasing the receive buffer BUSY
(3) Paper width
(4) Conditions for serial interface communication
2) Starting the memory switch setting mode
Open the roll paper cover and turn the power on while holding down the paper FEED button
(located inside the printer), and continue holding down the paper FEED button until the ERROR
LED comes on; release the paper FEED button when the ERROR LED light comes on. Next,
press the paper FEED button twice, and close the roll paper cover. Then, the printer prints the
possible setting contents of the memory switch and instructions. Follow the instructions to set the
memory switches.
3) Ending the memory switch setting mode
Once the setting is conducted, the contents of the settings are stored; then the printer runs
initialization. After initialization, the printer becomes ready for normal printing.

3.9 Paper Sensors

The printer has the following paper sensors:
• Roll paper end sensor
• Roll paper near-end sensor (optional)

3.9.1 Sensors and LED indicators

1) Roll paper end sensor
Located in the roll paper path, and detects paper out. When a paper end is detected, the PAPER
OUT LED comes on. However, if the roll paper core and paper are attached to each other by
tape or glue, the paper end cannot be detected. When the printer detects the paper end, stop
printing and replace the roll of paper with a new one. (The roll paper end sensor enables the roll
paper loading automatically.)
2) Roll paper near-end sensor (optional)
Installed on the roll paper supply device and detects a paper near-end by monitoring the roll paper
diameter. The PAPER OUT LED comes on when the roll paper diameter becomes sufficiently
small.

3.9.2 Sensors and printing

When the printer detects a paper near-end, it stops or continues printing, depending on the ESC c 4
command setting. The roll paper sensor always halts printing when detects a paper-end.
EPSON
TITLE
TM-U220A
Specification
(For Argentina Fiscal)
NO.
SHEET
REVISION
NEXT
A
37
SHEET
36