Lincoln Electric SVM151-A Test Procedure, Figure F.4 Analog Control Power Supply PC Board

Return to Section TOC

Return to Master TOC

F-21	F-21
	TROUBLESHOOTING & REPAIR

ANALOG CONTROL POWER SUPPLY PC BOARD TEST (CONTINUED)

FIGURE F.4 – ANALOG CONTROL POWER SUPPLY PC BOARD

P41				P42		P42
1	2	1	2	3	4	5

P41

3 4 6 7 8 9 10

Return to Section TOC

Return to Master TOC

AMPS
A
LINCOLN				VOLTS
			V
ELECTRIC
MULTI-
		WELD		350
INPUT
CHOPPER	T	ECHNOLOGY
		WORK		ELECTRODE

ANALOG CONTROL POWER SUPPLY PC BOARD

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

TEST PROCEDURE

1.Set the CC/CV power switch to OFF.

2.Remove input power to the machine.

WARNING

ELECTRIC SHOCK can kill.

Disconnect input power before removing the case cover and performing tests or making repairs to the machine.

3.Perform the Case Cover Removal proce- dure.

4.Perform the Power Module Capacitor Discharge procedure.

5.Locate the Analog Control Power Supply PC Board and plugs P41 and P42. See Figure F.4.

6.Carefully apply the correct input power to the Multi-Weld 350 (50 – 113 VDC).

7.Set the Multi-Weld 350 to either CC or CV mode. Make sure the input contactor acti- vates. If it does not, increase the input volt- age but do not exceed 113 VDC. The LED on the DC Buss Power Supply PC Board should light.

8.Check the Analog Control Power Supply PC Board input and output voltages according to Table F.1. See Figure F.4 and the Wiring Diagram.

MULTI-WELD 350