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Customer Support
Cordless Drill
Symptoms of failure Affected parts Method of inspection Cause of failure Recommended action Recommended action
Broken wire Charger Confirming the charging of Charger Defective contact terminal of Charger Repair & Replace Replace
Defect caused by overcharging of Charger Replace Replace
Defect caused by wrong charging of battery
Battery Confirming the charging & damage of the battery Fire due to overheating Replace Replace
Breakage & defective contact of the terminal
External impacts
Switch Confirm whether the switch connection is correct Separation of lead wire due to wrong assembly Defective switch connection reconnect according to the diagram Replacement of switch
Faulty connection of wire
Defective rotary motion due to external impact
Gearbox Confirm whether the gearbox is working well Damaged gear inside the gearbox Replace Replacement of gearbox
Defective rotary motion due to external impact
Confirming the operation of torque Repair
Motor Confirming the operation of motor Breakage due to overload caused by overwork Replace Replacement of motor
Breakage of terminal connected to motor
Damaged coil due to entry of other materials Repair & Replace
Damaged soldering of motor lead connection section
Damage Charger Confirming the damage of charger External impacts Repair & Replace Replace
Battery Confirming the damage of the battery External impacts Repair & Replace Replace
Drill Chuck Confirming the damage of drill chuck External impacts Repair & Replace Replacement of drill chuck
Housing Confirming whether the housing is damaged External impacts Repair & Replace Replacement of Housing
Shape impact
Switch Damaged switch, Confirming operation External impacts Repair & Replace Replacement of switch
Gearbox Confirming the operation of gearbox torque External impacts Repair & Replace Replacement of gearbox
Worn motor due to exceeded endurance limit
Motor Confirming the damage of motor terminal Confirming the soldering of terminal connection part Repair & Replace Replacement of motor
Clip holder Clip holder terminal Confirming the damage External impacts Repair & Replace Replacement of clip holder
Worn due to exceeded of endurance limit
Decreasing output Battery Confirming the charging of the battery Worn due to exceeded of endurance limit Replace Replace
Motor Confirming the operation of motor Worn due to exceeded of endurance limit Replace Replacement of motor
Motor on fire due to overload
Noise Gearbox Confirming the noise from gearbox Noise due to damaged gear Replace Replacement of gearbox
Run idling Motor & Gearbox Confirming the damage of gear inside the motor and gear box Replacement of gearbox Repair & Replace Replacement of motor
Worn due to exceeded endurance limit Replacement of gearbox
Overheated Overheated charger Confirming the overheat state of charger Confirming abnormal current Replace Replace
Defective temperature sensor
Battery Overheat of battery Confirming the state Confirming abnormal current Replace Replace
Defective temperature sensor Replace
Vibrating Drill chuck Confirmation of shaking drill chuck Confirming the damage of drill chuck Replace Replacement of drill chuck
Own Defectiveness

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