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(Refer to WIRING CONNECTION DIAGRAM)
4 TROUBLESHOOTING GUIDE
< TROUBLE > < CHECK > < REMEDY >
Does not operate. <CHECK BATTERY PACK.> NO Replace battery pack.
→
If no less than 12V DC is available across the (+) and (-) terminals,
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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.
↓OK
<CHECK TERMINAL CONNECTIONS BETWEEN MAIN UNIT NO Repair contacts.
AND BATTERY PACK.>
→
Check for proper terminal contacts.
↓OK
<CHECK SWITCH BLOCK.> NO Contacts in switch block
(See .WIRING CONNECTION DIAGRAM.)
→
are defective.
Check continuity between following terminals. Replace switch & FET
* Inspection of the forward / reverse selection switch. block.
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) .
↓OK
<CHECK MOTOR.> NO Replace motor.
It is OK if motor rotates 22,200 ± 2,800rpm with no-load operation and no-load
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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.
Does not speed-
control or does not
brake.
<CHECK FET.> NO Repair the contact or
replace switch & FET
block.
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Even if FET block is defective, it can not be replaced individually. Replace
whole switch block.
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7
EY6105-U1