Panasonic EY75A1, Service Manual, Page: 6 / 14

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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 turns on and off each time the LED light on/off button is depressed.
• Check whether the tool speed increases continuously as the trigger is gradually engaged.
• Check whether the tool speed is normal after repair and reassembly.
High mode: 0 to 2,500 rpm
Medium mode: 0 to 1,400 rpm
Low mode: 0 to 1,000 rpm
• Check whether the bit holder slides properly. Insert a bit and verify that it cannot be removed by lightly pulling on it.
• Check whether impact operation functions properly.
For an easy test of impact operation, check whether you can drill a universal screw (
φ
4.5X75mm) into a substrate Douglas fir
within about 5 seconds.
3.2.3. Integrity
• With the switch activated, shake the tool back and forth and up and down and verify that its sound does not change excessively.
• Check for the presence of any dirt or foreign matter from the repair process on the outside of the tool.