症状
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With no accessory load, the front drive makes abnormal metallic noise or feels rough.
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The motor can be heard, but the front output remains still in both directions with the bit removed.
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With the battery removed, the keyless chuck sleeve or jaws remain seized, or a clamped bit cannot be released by normal hand rotation.
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Rotation and impact pulses are steady, but a normal fastener advances much more slowly than expected.
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The bit rotates, but no impact pulses begin when a correct fastener provides normal resistance.
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Battery or charger feels warm
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Abnormal mechanical noise, strong vibration, or side play remains at no load.
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The accessory slips from the fastener, damages it, breaks it, or drives it beyond the intended seat.
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The chuck jaws open and close normally, but a straight compatible bit rotates or pulls out during moderate drilling or driving.
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Unit shuts off abruptly
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The tool or pack smokes, leaks, swells, smells burned, overheats severely, or exposes wiring.
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The blade strokes steadily but cuts slowly, stalls easily, or needs excessive feed force.
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360度塵口塞住或者鬆脫，或者兼容嘅喉管/接頭唔會保持連接。
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The pack gets excessively hot, smells, discolors, or stops charging.
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The chuck coasts much longer than normal after the trigger is released.
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The drill runs steadily but drills slowly or cannot drive a normal fastener with correct setup.
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A battery intended for the charger has physical damage, swelling, leakage, wetness, burned or melted terminals, or a deformed case. It may or may not still fit the charger.
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A fully seated and retained pack powers the tool only in certain positions or interrupts when the tool or battery is moved, without a normal overload stop.
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The direction lever will not reach forward, reverse, or center lock, or the selected position does not hold.
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The tool starts and runs at no load, but stops abruptly on an ordinary fastener with no jam or twist.
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