EY6535-U1
<TROUBLE > 
No
Weakness of vibration.
→
→
<CHECK > <CHECK FET.>
Even if FET block is defective, it can not be replaced individually. Replace whole switch block.
Shortcircuit (G: gate) and (S: source), and measure between it and (D: drain) with switch block.
NOTE:
*FET is sensitive against static electricity.
**The resistance value will vary dependent upon the measurement range of the tester.
↓OK
<CHECK SWITCH BLOCK.>
<CHECK ANVIL.>
Check wear condition. If no less than 1mm from the corner at (A) side or 0.5mm from the corner at (B) side, anvil is OK.
↓OK
<CHECK HAMMER BLOCK.>
Check whether hammer block rotates smoothly when moving shaft of hammer.
↓OK
<CHECK MOTOR.>
Measure no load rotation whether it is more than 1,900rpm with full charged battery pack.
< REMEDY >
NO Replace switch & FET
→block.
NO Replace switch & FET
→block.
NO Replace anvil.
→
NO Replace driving shaft
→assembly.
NO Replace motor.
→
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