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症状

After trigger release, the bit or square drive coasts noticeably longer than normal before stopping.
Tool rotates, but a seated fastener gets little torque or no normal impact pulse.
A straight bit traces a visible circle at no load instead of rotating on a stable centerline.
The trigger returns normally and power drops, but the anvil repeatedly coasts instead of stopping promptly.
WORKLIGHT COMES ON, BUT THE MOTOR WILL NOT START
The motor can be heard, but the front output remains still in both directions with the bit removed.
Trigger binds, fails to return, changes speed erratically, or does not stop the drive.
With no fastener load, the bare or correctly fitted output sounds harsh, binds, knocks, or shakes abnormally.
A straight bit or socket visibly orbits, shakes, or runs off-center during a brief no-load test.
A seated battery shows no charge response, or charge never reaches a usable full state.
battery无法完全滑入手柄、锁定、保持或正常释放。
The direction lever will not reach forward, reverse, or center lock, or the selected position does not hold.
Tool or battery becomes abnormally hot, smells hot, or repeats heat shutdown after light use.
The cool tool starts, then stops during a brief no-load test or light fastening task before heat builds.
锯子启动后负载下突然关闭
A correct-looking bit will not enter fully or can be pulled out after the collar is released.
The external structure is visibly cracked, loose, crushed, melted, or missing material even if the saw still runs.
360度除尘口卡住或松动，或兼容的软管/接头无法保持连接。
Smoke, flame, severe arcing, liquid, battery damage, melted contacts, exposed parts, or cracked structure.
Pakiet nie ładuje się lub lampka ładowarki pozostaje wyłączona lub pokazuje nienormalny czerwony wzór.

故障模式

part