Lincoln Electric DC-655 service manual Figure F.9 Firing Board Plug J5 Pins

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F-26

F-26

TROUBLESHOOTING & REPAIR

MAIN TRANSFORMER (T1) VOLTAGE TEST (continued)

FIGURE F.9 - FIRING BOARD PLUG J5 PINS

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LED7	LED8	LED9
		(205) 8
		(206) 7
		(207) 6
		(208) 5
LED1		LED2	4
			3
		G2699-[ ]	2
			1
		LED10
LED3		LED4

LED6

LED5

FIRING BOARD

J5

16 (204)

15 (203)

14

13 (231)

12 (215)

11

10 9

J6

J7

J4

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15.Locate plug J5 on the firing board. See Figure F.9.

WARNING

ELECTRIC SHOCK can kill.

•Do not touch electrically hot parts.

16.Turn on the DC-655 and check for approx- imately 32 VAC at the following leads and pins at plug J5. These are the phase angle winding voltages. See Fig. F.9.

Plug J5 pin-15 (lead #203) to pin-16 (lead #204)

Plug J5 pin-8 (lead #205) to pin-7 (lead #206)

Plug J5 pin-6 (lead #207) to pin-5 (lead #208)

17.Locate plug J13 on the optional digital meter board. If a digital meter board is not in place, plug J13 will not be used but will be present in the harness. Check the fol- lowing voltages at the appropriate leads and pin locations.

10 VAC Plug J13 pin-1 (lead #331) to pin-2 (lead #332)

10 VAC Plug J13 pin-4 (lead #333) to pin-5 (lead #334)

42 VAC Plug J13 pin-3 (lead #335) to pin-6 (lead #336)

18.If the correct primary voltages are applied to the main transformer and any of the sec- ondary voltages are missing or not correct, the transformer may be faulty.

NOTE: Always check the wiring between the transformer windings and the test points before replacing the transformer.

IDEALARC DC-655