Panasonic EY75A7, 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, B and C by pinching lead wires.
• There is no dust or deformation on battery terminals.
3.2.2. Operation
• Check whether the tool operates properly in both the forward and reveres directions.
• Check whether the LED lights ON.
• 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 2500 rpm.
Medium mode: 0 to 1450 rpm.
Low mode: 0 to 950 rpm.
Tex mode: 0 to 2500 rpm.
• Check whether the bit holder move smoothly and hold the bit firmly.
• Check whether the remaining battery power indicator lamp lights up or flashes when the Battery level button is pressed.
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.