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Chapter 4 Advanced Usage
Self-test Mode
You can check the following items using the self-test.
• Product name
• Firmware version
• Product serial number
• Interface type
• Handshaking (Condition for BUSY)
• Resident fonts
• Thai Character Composition
• Auto Line Feed
• Print Density
• Recovery Point
• Maintenance counter information (head running length)
Follow the steps below. You can also run the self-test using the ESC/POS commands.
1
Close the roll paper cover.
2
While pressing the Feed button, turn on the printer. (Hold down the Feed button
until printing starts.)
After printing the current print status, a Continuing self-test guidance is printed, and the power LED
flashes.
3
Briefly press the Feed button (less than one second) to continue the self-test.
The printer prints a rolling pattern on the roll paper, using the built-in character set.
After “*** completed ***” is printed, the printer initializes and switches to standard mode.
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