4 TROUBLESHOOTING GUIDE
(Refer to WIRING CONNECTION DIAGRAM)
< TROUBLE > | < CHECK > |
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| < REMEDY > | ||
Does not operate. |
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| <CHECK BATTERY PACK.> | NO |
| Replace battery pack. |
| → If no less than 18V DC is available across the (+) and | → |
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| the battery pack is OK. |
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| NOTE: | The battery pack is sold separately as an optional accessory. |
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| See the nearest sales dealer for details. The battery pack has a |
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| limited life. |
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| The pack should be replaced if; |
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-after being charged for the rated charging time the battery voltage is less than 18V 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. |
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| ↓ OK |
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| NO |
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| <CHECK SWITCH BLOCK.> | 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: |
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- | There should be 0Ω between (A) - (D) , and between (B) - (C) ; |
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| when switch lever is set to forward side. |
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- | There should be 0Ω between (A) - (C) , and between (B) - (D) ; |
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| when switch lever is set to reverse side. |
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* Inspection of the brake. |
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When switch handle is not depressed: |
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- | There should be 0Ω between (A) - (B) . |
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| ↓ OK |
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| NO |
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| <CHECK MOTOR.> | Replace motor. | |
The motor normally operates with its white (+) and black | → |
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connected to 18V DC. |
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