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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.
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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 .>
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Check for proper terminal contacts.
↓OK
<CHECK SWITCH BLOCK.> NO Contacts in switch block
(See WIRING CONNECTION DIAGRAM.)
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are defective.
Check continuity between following terminals. Replace switch & FET
* Inspection of the forward / reverse selection switch. block.
When switch handle is depresse d all the way:
- There should be 0 Ω between (A) - (D) , and between (B) - (C) ;
when switch lever is set to forward side.
- There should be 0 Ω between (A) - (C) , and between (B) - (D) ;
when switch lever is set to reverse side.
* Inspection of the brake.
When switch handle is not depressed:
- There should be 0 Ω between (A) - (B) .
↓OK
<CHECK MOTOR BRUSH.> NO Replace motor
A. Check the condition of carbon brush.
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brush assembly.
(Do not touch between brush holder and holding spring.)
B. There should be 0Ω between motor lead wire and
terminal of brush holder.
↓OK
<CHECK MOTOR ROTOR.> NO Replace motor
Check the condition of rotor if there is any wear, crack and deformation.
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rotor assembly.
↓OK
<CHECK MOTOR STATOR.> NO Replace motor
Check the condition of motor case if there is any crack and deformation.
→
stator.
5
EY6506-U1