Lincoln Electric SVM200-A service manual Figure F.4 12/15 VDC Supply Lead Location

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F-21	TROUBLESHOOTING AND REPAIR				F-21
	12/15 VDC SUPPLY TEST PROCEDURE (continued)
	FIGURE F.4 – 12/15 VDC SUPPLY LEAD LOCATION
	71	71	72	72

+ + - -	+ + - -
5VDC/5A	15VDC/3.4A
DC ON	DC ON
DPP25-5	DPP50-15

N L N L

Ground 102B 103C (Green) (White) (Pink/Red)

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8.Using a volt/ohmmeter, check for the presence of input power at leads 102B to 103C at the supply terminals. See Figure F.4.

9.If the correct input voltage is not present in the previous step, check for loose or faulty connec- tions at the terminal blocks and associated wiring. See wiring diagram.

10.Check for the presence of 12VDC at leads 72(-) to 71(+). See wiring diagram. If 12 volts are present, the 12 Volt Supply is functioning properly.

11.If 12VDC is not present, label and disconnect all associated leads (72(-) to 71(+)) from the 12 Volt Supply terminals.

12.Re-check for the presence of 12VDC at the supply terminals.

13. If 12VDC is not present and the correct input voltage is being applied, the 12 Volt Supply is faulty. Replace. Perform the 12/15 VDC

Supply Removal and Replacement

Procedure.

14. If 12VDC is present with all leads (72(-) to 71(+)) disconnected, there is a heavy load or short circuit associated with leads 72(-) to 71(+) and the associated wiring. See wiring diagram.

15. Replace all previously disconnected leads.

16. Perform the

. Case Cover Replacement 17. Performrocedurethe Monitor. and Pedestal

Replacement Procedure

VRTEX TM 360