1. software installs impropriety; If should select engine of carve characters on a seal of supportive DM/PL language, or select engine of corresponding model carve characters on a seal, should shut like compensation of point of a knife again (low speed engraves 1CM the following small character to be able to open point of a knife to compensate, but compensate a value to answer reasonable) ; 2. String together and the mouth joins at the same time; 3. Quarter draw file was not outputted be interrupted namely; 4. And the mouth was undertaking operating to clavier when deferent data; 5. Software of carve characters on a seal already had damage, or computer has virus to affect; 6. Be in around electric welding, or radio, machine tool and other report move a tool to disturb. (use and buccal communication is more sensitive to outside interference, if outside interference is stronger, the proposal uses the news report that string together a mouth) ; 7. Deserved to use improper regulated power supply, if home appliance uses relay type regulated power supply, the instant is connected to be able to generate intense interference in relay, cause communication data to make mistake;

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