FM-15: 工具仅向一个方向运行或与选择方向相反

工具的方向选择器动作正常并保持卡位，但卡盘仅向一个方向旋转或反向旋转。

• Selector is not pushed fully to the intended side
• External cap moves but does not actuate the internal switch
• Direction-switch contacts are worn or burned
• Wiring, trigger, brush, or motor connection fails in one polarity path

1. Forward and reverse match the selected arrows, or the electrical direction path is conclusively routed to service.

1. Compare actual chuck rotation with the molded direction arrows and repeat once only if the first selection was incomplete.
2. If one direction is absent or reversed with sound selector detents, remove the battery and route the direction switch or wiring to service.
3. Remove the bit, support the tool, and confirm the selector moves fully to each side with the trigger released.
4. Install a verified battery and make one brief empty-chuck test in forward, then stop completely before selecting reverse.

这是完整维修手册中所含故障排除指南的预览。

• 方向选择器动作并保持正常卡位，但卡盘无法在某一方向运行或反向旋转。

  方向选择器移动并保持正常卡位，但夹头无法向一个方向运行或旋转方向与选择箭头相反。

• root cause analysis
• tools needed
• step-by-step repair procedure
• diagrams
• exploded views
• post-repair checks

公开页面仅显示预览。购买完整手册以下载全部维修步骤、图示和验证流程。