Lincoln Electric SVM158-A Normal, Connector Lead no, Plug PIN no Or Identity Reading

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F-27 F-27

TROUBLESHOOTING & REPAIR

POWER BOARD TEST (CONTINUED)

Table F.3 Power Board Voltage Checks

					NORMAL
CHECK POINT	TEST	CONNECTOR		LEAD NO.	ACCEPTABLE
					VOLTAGE
LOCATION	DESCRIPTION	PLUG PIN NO.		OR IDENTITY
					READING
POWER PC	CHECK 40VDC		2(+)
BOARD	SUPPLY FROM		1(-)	65 (+)	38-42 VDC
CONNECTOR	RECT. BRIDGE			66 (-)
PLUG J41	TO POWER BD.	65	66
POWER PC	CHECK +15VDC		1(+)
BOARD	SUPPLY FROM		5(-)	412 (+)	15 VDC
			410
CONNECTOR	POWER PC			410 (-)
PLUG J42	BOARD		412
POWER PC	CHECK +5VDC		3(+)
BOARD	SUPPLY FROM		5(-)	408 (+)	5 VDC
			410
CONNECTOR	POWER PC			410 (-)
PLUG J42	BOARD	408
POWER PC	CHECK -15VDC		2(+)
BOARD	SUPPLY FROM		5(-)	411 (+)	-15 VDC
			410
CONNECTOR	POWER PC		411	410 (-)
PLUG J42	BOARD
POWER PC	CHECK +5VDC		3(+)
		401	12(-)	403 (+)	5 VDC
BOARD	“SPI” SUPPLY
CONNECTOR	FROM POWER			401 (-)
PLUG J43	PC BOARD		403
POWER PC	CHECK +5VDC
			4(+)
BOARD	“RS232”		9(-) 405	406 (+)	5 VDC
CONNECTOR	SUPPLY FROM			405 (-)
	POWER PC
PLUG J43
	BOARD		406
POWER PC	CHECK +15VDC		6(+)
		401	12(-)	402 (+)	15 VDC
BOARD	“SPI” SUPPLY
CONNECTOR	FROM POWER			401 (-)
PLUG J43	PC BOARD	402

V350-PRO