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3.4.4.3 Operating procedure
The procedures used for this process are described below.
Entering Memory Switch Setting Mode
1. Open the paper roll cover and turn the power on while pressing the paper FEED button.
2. Press the paper FEED button twice while POWER, ERROR, and PAPER OUT LED are lighting.
3. Close the cover.
The printer prints the current settings and setting instructions.
Selecting Items to Set
Open the paper roll cover.
Press the FEED button the number of times required to select the desired item (as shown below);
then close the paper roll cover.
Pressing the paper FEED button 0 times or 10 or more times will terminate this procedure.
❒ 3 times:
Basic Serial Interface Settings
❒ 4 times: Receive buffer full release condition
❒ 6 times: Automatic Paper Reduction
❒ 7 times: Roll Paper Width
❒ 9 times: Cover open status
Selecting Individual Settings
Open the paper roll cover.
Press the FEED button the number of times required to select the setting for each item; then
close the paper roll cover.
Basic Serial Interface
Setting
Baud Rate Setup
(page 3-22)
Data Length,
Handshake, or Parity
(page 3-22)
Ending Memory Switch Setting Mode
The printer prints the new settings and saves the settings to non-volatility memory. Then, the
software resets and enters the normal printable status. Turn the power supply OFF.
Rev. H
Receive buffer
Automatic Paper
full release
Reduction
condition
(page 3-23)
(page 3-23)
TM-U220 Technical Reference Guide
❒ 0, 1, 2, 5, 8 times: Unused
❒ 10 or more times: Unused
Cover open status
Roll Paper Width
(page 3-23)
(page 3-24)
Setup 3-21
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