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3.6 Self-test
1) The printer has a self-test function that checks the following:
• Control circuit functions
• Printer mechanisms
• Print quality
• Control software version
• Contents of the DIP switch settings
• Memory switch settings
• Paper width to be set
2) Executing the self-test
[Starting the self-test]
To start a self-test on roll paper, hold down the FEED button while turning on the printer with the
cover closed, or execute the GS ( A command; then the current printer status (*1) is printed.
(*1) • Control software version
• DIP switch settings
• Memory switch settings
[Self-test standby state]
After printing the current printer status, the printer prints the message "If you want to continue
SELF-TEST printing, please press FEED button." The PAPER OUT LED indicator flashes and
the printer enters the test printing (*2) standby state. Press the FEED button to start test printing.
(*2) • Prints a rolling pattern using only the built-in character set.
• Cuts automatically after completing the rolling pattern printing.
3) Ending the self-test
After a number of lines are printed, the printer indicates the end of the self-test by printing "***
completed ***," and initializes.
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