Panasonic 7430LA, Service Manual

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3.2. Trial Operation (After Checking Troubleshooting Guide)
3.2.1. Assembly
• Confirm if there is no gap between housing A and B by pinching lead wires.
• There is no dust or deformation on battery terminals.
• Confirm if there is no dirt when repairing.
3.2.2. Operation
• Check whether the tool operates properly in both the forward and reveres directions.
• Check whether the LED light illuminates when the trigger depressed and turns off when the trigger is released.
• Check whether the tool speed increases continuously as the trigger is gradually engaged.
• Check whether the tool speed is normal after repair and reassembly.
1 (Low mode) 110 to 400 rpm
2 (High mode) 320 to 1300 rpm
• Check whether the tool becomes hot in a short period of time under conditions of no load.
• Set the gradation on the clutch handle to “Off,” operate the tool under conditions of no load, and check whether the clutch oper-
ates with the chuck in the locked state.
• Rotate the keyless chuck and check whether the chuck’s three clips move.
• Rotate the clutch handle and check whether the clutch switches properly.
• Check whether the battery level indicator illuminates when the trigger depressed and turns off when the trigger is released.
3.2.3. Integrity
• Confirm if the chuck is assembled firmly and chuck jaws operate normally.
• With the switch activated, shake the tool back and forth and up and down and verify that its sound does not change excessively.