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DCA20SPXU2 SERVPRO
®
TROUBLESHOOTING (GENERATOR)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown,
use the table shown below and on the preeceding pages for diagnosis of the generator and engine. If the problem cannot
be remedied, consult our company’s business office or service center.
Solution
Voltage Output Weak
AC Voltmeter defective? Check output voltage using a voltmeter.
Is wiring connection loose? Check wiring and repair.
Is AVR defective? Replace if necessary.
Defective Rotating Rectifi er? Check and replace.
Defective Exciter Field?
Check for approximately 17.3 ohms
across J & K on CN1
Low Voltage Output
Is engine speed correct? Turn engine throttle lever to “High”.
Is wiring connections loose? Check wiring and repair.
Defective AVR? Replace if necessary.
High Voltage Output
Is wiring connections loose? Check wiring and repair.
Defective AVR? Replace if necessary.