failure mode

FM-20: 砂纸盘居中时振动过大

即使新正确圆盘居中且完全附着,工具仍异常震动。

诊断概览

即使新正确圆盘居中且完全附着,工具仍异常震动。

可能根本原因

  • Pad is loose, distorted, or damaged
  • Belt or eccentric is damaged
  • Drive bearing is worn
  • Debris or uneven disc is unbalancing the pad

快速检查

  1. The tool runs with normal random-orbit vibration at low speed.

维修预览

  1. Set O, remove the battery, and refit a fresh disc with all holes centered.
  2. 检查垫片平整度、四个screws、裙边间隙及垫片周围碎屑。
  3. 低速短暂运行,稳握工具且不接触工件。
  4. 若严重振动仍存在,取下电池组并使用授权服务。

这是完整维修手册中所含故障排除指南的预览。

常见修复

  • 偏心驱动和轴承
  • 无刷motor和风扇
  • 砂光垫和四个screws

相关症状

  • 砂纸盘居中时振动过大

    即使新正确圆盘居中且完全附着,工具仍异常震动。

包含在完整手册中

  • 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。

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