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EY6813-U1
4 TROUBLESHOOTING GUIDE
(Refer to WIRING CONNECTION DIAGRAM)
4.1.
CHECK POINTS FOR ELECTRICAL PARTS.
< TROUBLE >
Does not operate.
Does not speed-
control but switch
trigger works
properly.
<CHECK BATTERY PACK.>
→ If no less than 24V DC is available across the (+) and (-)
terminals after charging the rated charging time (45min.),
the battery pack is OK.
NOTE:
The battery pack is sold separately as an optional
accessory. See the nearest sales dealer for
details. The battery pack has a limited life.
The pack should be replaced if;
- after being charged for the rated charging
time the battery voltage is less than 24V DC
or the usable time is extremely short.
- the battery leaks. Check battery for leaks
and terminals for corrosion.
<CHECK TERMINAL CONNECTIONS BETWEEN
Check for proper terminal contacts or if there is any foreign
substances around the battery terminals of battery holder.
<CHECK MOTOR.>
The motor normally operates with its white (+) and gray (-)
lead wires connected to 24V DC.
<CHECK SWITCH.>
→
Even if FET block is defective, it can not be replaced
individually. Replace whole switch block.
< CHECK >
↓OK
MAIN UNIT AND BATTERY PACK.>
↓OK
6
< REMEDY >
NO Replace battery
→
pack.
NO Repair contacts or
→
replace switch
assembly.
NO Replace motor
→
rotor and brush
assembly.
NO Replace switch &
→
FET block.
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Troubleshooting
