Yamaha EF1000 Service Manual page 68

A
8
GENERATOR SYSTEM
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ELEC
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[~
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4-10
Condenser functions
1. Disconnect the condenser leads.
2. Connect the pocket tester.
Turn the pocket tester switch to "Rx1 K"
from "OFF" position.
Needle swings and returns back quickly-7
Correct.
Needle does not swing/return-7Replace.
F!''•'41 ;]
~II~
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Discharge the old condenser by shorting the
two terminals together.
Use an Insulated screw driver.
Do not touch either of the terminals and
ground before the condenser is discharged.
Rotor rectifier continuitys
1. Desolder the rotor rectifiers.
2. Connect the pocket tester shown.
Continuity-7Correct.
No continuity-7Replace.
3. Connect the pocket tester as shown.
No continuity-7Correct.
Cantin u ity-7Replace.
~:
Nomal direction.
rn:J:
Reverse direction.
Rotor resistance
1. Desolder the rotor rectifiers.
2. Connect the pocket tester as shown.
Rotor resistance:
4.110±10%
Out of specification-7Replace.