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4 TROUBLESHOOTING GUIDE
(Refer to WIRING CONNECTION DIAGRAM)
< TROUBLE >
Does not operate.
→ If no less than 12V DC is available across the (+) and (-) terminals,
Does not speed-
control or does not
→ Even if FET block is defective, it can not be replaced individually. Replace
brake.
<CHECK BATTERY PACK.>
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 12V DC or the usable time is extremely short.
- the battery leaks. Check battery for leaks and terminals for
corrosion.
<CHECK TERMINAL CONNECTIONS BETWEEN MAIN UNIT
Check for proper terminal contacts.
<CHECK SWITCH BLOCK.>
(See .WIRING CONNECTION DIAGRAM.)
Check continuity between following terminals.
* Inspection of the forward / reverse selection switch.
When switch handle is depressed all the way:
- There should be 0Ω between (A) - (D) , and between (B) - (C) ;
when switch lever is set to forward side.
- There should be 0Ω between (A) - (D) , and between (B) - (C) ;
when switch lever is set to foward side.
* Inspection of the brake.
When switch handle is not depressed:
- There should be 0Ω between (A) - (B) .
<CHECK MOTOR.>
It is OK if motor rotates 22,200 ± 2,800rpm with no-load operation and no-load
current is 2.6A or less when connecting 12V DC between white (+) and black
(-) lead wires.
NOTE:
It is OK if motor rotates slowly when connecting 3V DC between
white and black lead wires.
whole switch block.
< CHECK >
↓OK
AND BATTERY PACK.>
↓OK
↓OK
<CHECK FET.>
7
EY6105-X8
< REMEDY >
NO Replace battery pack.
→
NO Repair contacts.
→
NO Contacts in switch block
→
are defective.
Replace switch & FET
block.
NO Replace motor.
→
NO Repair the contact or
replace switch & FET
→
block.
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