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Voltage too low
Kau!w)
In case AC voltage is less than lOV, voltmeter needle should not deflect.
Rpm too low
Rpm unadjusted
t
loose wire joints
Wrong wiring
I
OK
1
Resistance less
than 4a
Field coil shorted
NG
Slip ring defective
OK
Brush defective
(Remedy)
l
Adjust.
l
Wire correct.
l
Adjust.
0 Rotor replace.
0 Clean, replace.
l
Check, replace.
Main coil shorted 0 Stator replace.
OK
Sub coil shorted
l
Stator replace.
OK
AVR broken
l
Replace.
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