* SD card is damaged.
* SD card doesn’t insert correctly.
* Use the supported capacity SD card.
* Insert the SD card again.
* Media is loaded incorrectly
* Dust or adhesive accumulation on the print
head.
* Print density is not set properly.
* Print speed is not set properly.
* Print head element is damaged.
* Reload the supply.
* Clean the print head.
* Clean the platen roller.
* Adjust the print density and print speed.
* Run printer self-test and check the print head test pattern if
there is dot missing in the pattern.
* Change proper media roll.
* Make sure the print carriage is closed properly.
Missing printing on the left or right
side of label
* Wrong label size setup.
* Set the correct label size.
* The printer is in Hex Dump mode.
* Turn off and on the printer to skip the dump mode.
Skip labels when printing
* Label size is not specified properly.
* Sensor sensitivity is not set properly.
* The media sensor is covered with dust.
* Check if label size is setup correctly.
* Calibrate the sensor by Auto Gap or Manual Gap options.
* Clear the sensor by blower.
RTC time is incorrect when reboot
the printer
* The battery has run down.
* Check if there is a battery on the main board.
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