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Voltage too low
J
Uhusel
I
If AC voltage is less than 1OV. voltmeter needle should not deflect.
Rpm unadjusted
I
OK
Wiring checked?
1
loose wire joints
1
Wrong wiring
;OK
i
than 4f2
Field coil shorted
I
OK
OK
Brush defective
*- ----+
Main co11 shorted
. Replace stator.
!OK
AVR broken
.
(Remedy)
Adjust.
Wire correctly.
Adjust.
Replace rotor.
Clean, replace.
Check, replace.
l
Replace stator.
Replace.
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