Mata bor melewati pemasukan awal, tetapi mundur, jatuh bebas, atau kehilangan daya saat badan chuck tetap aman.

Bit lolos dari pemasangan awal, tetapi mundur, jatuh, 1. Lepaskan trigger, keluarkan paket, dan periksa batang bit serta alur retensi.

• FM-17: Fm 5 1

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

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