Epson C31C636834 Technical Reference - Page 53

Self-test Mode

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TM-T88IV Technical Reference Guide 3.7 Notes on Printing 2-Dimensional Code The TM-T88IV supports 2-dimensional code printing. Be sure to follow the notes below when printing 2-dimensional codes. • When printing PDF417 (2-dimensional code), it is recommended to set the height of one module of the symbol to three to five times the width of one module, also making sure that the total height is almost 5 mm {0.20"} or more. • The recognition rate of the 2-dimensional code may be affected by such items as different widths of the modules, print density, environmental temperature, type of the thermal paper, and characteristics of the reader. Therefore, the user should check the recognition rate in advance so that the limitations of the reader can be considered. 3.8 Two-color printing For selecting colors/how to print, see the relevant documents for OPOS, the printer driver, and the ESC/POS commands. 3.9 Operating Mode (Switch Panel Operation) The printer has a self-test mode to check printer settings in addition to the regular print mode. 3.9.1 Self-test Mode In the self-test mode, the following items are checked and printed out: • Control circuit functions • Printer mechanism functions • Print quality • Control software ROM version • DIP switch settings Follow the steps below to start a self-test: 1. With the roll paper cover open, press and hold down the FEED button and turn on the printer. The printer prints various printer settings. 2. When the printer finishes printing the printer status, check whether the following message is printed (The printer is now in the self-test wait mode.) : "If you want to continue SELF-TEST printing. Please press PAPER FEED button" 3. To start a test print, press the FEED button while the printer is in the self-test wait mode. 4. Check that the following has been printed: "*** completed ***" This indicates that the printer has been initialized and returned to the normal mode. Rev. A Application Development Information 3-13

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Rev. A
Application Development Information
3-13
TM-T88IV Technical Reference Guide
3.7
N
otes on Printing 2-Dimensional Code
The TM-T88IV supports 2-dimensional code printing. Be sure to follow the notes below when
printing 2-dimensional codes.
When printing PDF417 (2-dimensional code), it is recommended to set the height of one
module of the symbol to three to five times the width of one module, also making sure
that the total height is almost 5 mm {0.20"} or more.
The recognition rate of the 2-dimensional code may be affected by such items as
different widths of the modules, print density, environmental temperature, type of the
thermal paper, and characteristics of the reader. Therefore, the user should check the
recognition rate in advance so that the limitations of the reader can be considered.
3.8
Two-color printing
For selecting colors/how to print, see the relevant documents for OPOS, the printer driver, and
the ESC/POS commands.
3.9
Operating Mode (Switch Panel Operation)
The printer has a self-test mode to check printer settings in addition to the regular print mode.
3.9.1
Self-test Mode
In the self-test mode, the following items are checked and printed out:
Control circuit functions
Printer mechanism functions
Print quality
Control software ROM version
DIP switch settings
Follow the steps below to start a self-test:
1.
With the roll paper cover open, press and hold down the
FEED
button and turn on the
printer. The printer prints various printer settings.
2.
When the printer finishes printing the printer status, check whether the following message is
printed (The printer is now in the self-test wait mode.) :
“If you want to continue SELF-TEST printing.
Please press PAPER FEED button”
3.
To start a test print, press the
FEED
button while the printer is in the self-test wait mode.
4.
Check that the following has been printed:
“***
completed
***”
This indicates that the printer has been initialized and returned to the normal mode.