install the label first. press the feed button and then turn on the printer power.

    do not release the feed button until the printer feeds labels. the printer performs the following items:

    1. calibrate label pitch

    2. print out thermal print head check pattern

    3. print the internal settings

    4. enter dump mode

    regarding the self-test and dump mode, please refer to section 3.7 "self test" and section 3.8 "dump mode" for more information.