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3.1.
Trial Operation (after checking Troubleshooting Guide.)
3.1.1.
ASSEMBLY
1. Confirm if there is NO gap between Housing A and B by pinching the lead wires.
2. Confirm all screws are tightened firmly.
3. There should be no abnormal sound when shaking the unit.
4. There is no dust or deformation on battery terminals.
5. Confirm if there is no dirt when repairing.
3.1.2.
OPERATION
1. Confirm the forward and reverse side of rotation.
2. Confirm if LED rights ON. Once battery pack is removed, press the switch handle; otherwise LED does not right ON.
3. Confirm if the tools may not become hot in a short operation.
4. Confirm the action when setting the DRILL mode.
5. Confirm if the chuck jaws move smoothly and hold the bit firmly.
only for EY7940
6. Confirm no vibration on reverse side.
3.1.3.
SWITCH
1. Confirm the rotation of speed if it changes between 200-1400 ± 140 rpm in proportion to the amount of pushing level on switch
handle on HIGH mode and 70-400 ± 40 rpm on LOW mode.
2. Confirm if the rotation stops when releasing the switch handle.
3.1.4.
CLUTCH
1. Check if the clutch torque changes suited for the number of clutch.
6
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