The best thing to do is do a memory reset. But this could also clear pages and formats, user defined characters and fonts, configurations,tables,or all of these parameters.
To reset memory
1.Turn off the printer.
2. Set the DIP switches to reset a portion.
3. Press and hold the Feed/Pause button while turning on the printer. The printer prints out a hardware configuration test label.
4. Hold the Feed/Pause button for 1 second. The printer resets a portion or all of its memory.
5. To exit test and Service mode, turn off the printer.
6. Reset the DIP switches to their original setting and then turn on the printer.
That should do the trick.
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