Panasonic EY6931 - 15.6V HAMMER DRILL, Руководство по обслуживанию

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(Refer to WIRING CONNECTION DIAGRAM.)
5 TROUBLESHOOTING GUIDE
5.1. CHECK POINTS FOR ELECTRICAL PARTS.
< TROUBLE > < CHECK > NO < REMEDY >
Does not operate. — <CHECK BATTERY PACK.>
→
Replace battery pack.
If no less than 15.6 V DC is available across the (+) and (-) terminals,
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 15.6V DC or the usable time is extremely
short.
- the battery leaks. Check battery for leaks and terminals for
corrosion.
↓
OK
NO
<CHECK TERMINAL CONNECTIONS BETWEEN
→
Repair contacts.
MAIN UNIT AND BATTERY PACK.>
Check for proper terminal contacts.
↓
OK
NO
<CHECK SWITCH BLOCK.>
→
Contacts in switch
(See WIRING CONNECTION DIAGRAM.) block are defective.
Replace switch & FET
Check continuity between following terminals. block.
* Inspection of the forward / reverse selection switch. When switch
handle is depressed 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.
↓
OK
NO
<CHECK MOTOR.>
→
Replace motor.
The motor normally operates with its white (+) and black (-) lead wires
connected to 15.6V DC.
Ref.: motor rotating speed 17,700 ±1,500.
NO
Does not speed — <CHECK SWITCH BLOCK.>
→
Replace switch & FET
control. block.
Though FET block may be defective, FET block can not be replaced
without replacing switch block.
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EY6931