Lincoln Electric IM602-A manual Troubleshooting

E-8		TROUBLESHOOTING	E-8
	Observe all Safety Guidelines detailed throughout this manual
	PROBLEMS	POSSIBLE	RECOMMENDED
	(SYMPTOMS)	CAUSE	COURSE OF ACTION

PROBLEMS

Digital Ammeter not working properly 1.		The meter PC board may not be
or erratic display.		receiving the auxiliary or sensing
		voltages. Check plug P3 and
		plugs P12 & P13. See wiring
		diagram.
	2.	The current feedback circuit may
		be faulty. From the shunt to the
		control board. See wiring dia-
		gram.
	3.	The Digital meter PC board may
		be faulty.
Analog Meters not reading, or not	1.	The meters may not be receiving
reading correctly.		voltage or current feedback sig-
		nals. Make sure plug P3 is
		securely plugged in the control
		board and plug J14 (in-line con-
		nector) is securely seated in the
		plug assembly from the control
		board.
	2.	Check the current feedback and
		voltage feedback circuits. See
		wiring diagram.
	3.	The meter(s) may be defective.

220VAC receptacle not working.	1.	Check the circuit breaker. Reset
(50/60 Hz Europe and Export mod-		if necessary.
els only)
	2.	Check for broken or loose con-
		nections in the 220VAC circuit.
		See wiring diagram.

Contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

DC-655