failure mode
FM-01: FM-01 NO WORKLIGHT OR MOTOR RESPONSE
No worklight or motor response when the trigger is pressed, indicating a complete power failure.
Diagnostic overview
No worklight or motor response when the trigger is pressed, indicating a complete power failure.
Likely Root Causes
- Pack is discharged, damaged, or not fully latched
- Direction button remains in center lock
- Rails or terminals are dirty, bent, or damaged
- Tool power, switch, brush, motor, or wiring path is open
Quick Checks
- A sound pack seats securely and trigger use produces both worklight and motor response.
Repair Preview
- 13
- 1.
This is a preview of the troubleshooting guidance included in the full repair manual.
Common Fixes
- Known-good charged compatible pack
Related symptoms
With a charged pack installed and direction selected, the trigger produces no light, sound, or anvil movement.
With a charged pack installed and direction selected, 1. Release trigger; center the control; remove the pack and screen for heat,
NO WORKLIGHT OR MOTOR RESPONSE
FM-01 NO WORKLIGHT OR MOTOR RESPONSE FM-08 BATTERY WILL NOT RELEASE FROM THE TOOL
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
Public pages show a preview only. Purchase the full manual to download complete repair steps, diagrams, and verification procedures.