5.2.2 Maintenance rules
In case of any performance failure during the valid warranty period of the
product, you may apply for product warranty service. The following condi-
tions must be met for free warranty service:
√ The purchased products are normally used within the specified product
warranty period, and non-artificial performance failure occurs;
√ No unauthorized removal, no modification or addition not guided by the
official instructions, or other faults not caused by human beings;
√ Provide valid proof of purchase, receipt and order number.
The following conditions are not covered by a free product warranty:
× Collision and burning accidents caused by man-made and non-product
quality problems;
× Damage caused by unauthorized refitting, disassembly, shell opening,
etc. not guided by the official instruction manual;
× Damage caused by improper installation, use and operation not in accor-
dance with the instruction manual;
× Damage caused by the customer’s self-repair of the assembly without
official instructions;
× Damage caused by circuit modification not guided by official manual or
improper matching and use of battery pack and charger;
× Damage caused by failure to operate not in accordance with the product
instructions;
× Damage caused by operation in severe environment, such as strong wind,
rainy day, sand dust, etc.;
× Damage caused by operation in complex electromagnetic environment or
strong interference source environment, such as mining area, launching
tower, high-voltage line, substation, etc.;
× Damage caused by manipulation in case of mutual interference with
other wireless devices, such as transmitter, image transmission signal, WiFi
signal interference, etc.;
× Damage caused by forced use in case of aging or damage of parts;
× Damage caused by reliability and compatibility when used together with
the third-party parts without smart certification;
× Damage caused by insufficient discharge due to insufficient power or use
of batteries with quality problems;
× The serial number of the machine, the factory label and other signs are
torn or altered;
× After contacting Smart to confirm the warranty service, the corresponding
items are not mailed within 7 natural days;
× Other situations as stated in the policy.
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