Voltage PC Board Schematic, Return to | Lincoln Electric NA-5SF, NA-5NF

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C1102

C1101

N.A. 667

ARC

VOLTAGE POLARITY TERMINALS

621

L501

TP 501

F501

L502

	R501
	CW
C519	R502
	C501
	R503

510P

B3C

R504

			525
			A5H
			C520
	13 -		4
	13 -	A	14
	12 +	A
	12 +		11
			11
			C521
	D502
			500
			A6H
9	-	X501

	B	8
	B	R547
		R547

+ C524						WELD		PIN F
					RESPONSE			PIN F
500						JUMPER				R510
A6H					R506	(RED)
A6H
								PIN S
								PIN S
					R535			R507	2	-
ACTUAL VOLTAGE										A
BUFFER		R539				C506				1
BUFFER				R532					3	+ X502
				R532					3	+ X502
									CONTROL
	525									AMP
	525		D516
	A5H		D516		6	-		7
	A5H				6	-		7
						D
		DZ			5 +		X501	D505		Q506
R537		DZ					X501
		503		R505
	D503		+	R505	D504					525
										525

C507

R509

C508

C518

D506

R518

10 +	B	8
		8

-	X502
9	X502
	START	R514
		R514
		CW
		R515

Q501

D517

GAIN

				R533	A
	525			R534	B
1	A5H	OCI501		5				D519
1		OCI501		5				D519
						531B		T501
				C509		A5D	115		24
2	6	R513	4	C509			115		24
				DZ		532 VAC			VAC
						A5D
						A5D
				504	C
	R538				C
			POWER SOURCE					D521
			POWER SOURCE
CW			CONTROL INTERFACE
R540			CONTROL INTERFACE
					510	R542			R543
						R542	C525		R543
							C525
R512							1
R512					D513		2	0CI502
					D513		2	0CI502

525

A5H

	R541	R544	R526
	D520			12		R527		R528
				12	+	D515
					+	D515	DZ
					D	14	DZ
		DZ		13	D		507
		DZ		13	-		507
	506				-	X502
	506			+

			R545
				C526				Q508
	D522						R536
	D522
				510P
				510P
		R548		B3C			Q507
							Q507
6	4						R529
		C527
		5		AUTO-STOP

637

D5A

		6682-3
		SHT. NO. L
NA-5 SCHEMATIC	VOLTAGE CIRCUIT	10-5-81
		10-5-81
		SUP'S'D'G
		SUP'S'D'G
		REF.
EQUIP. TYPE	SUBJECT
EQUIP. TYPE	SUBJECT

A6H

SHUTDOWN

ENABLE

SHUTDOW CIRCUIT

500

A6H

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VOLTAGE P.C. BOARD

VOLTMETER P.C. BOARD

COMPONENTS NOT ON P.C. BOARD

KEY TO SYMBOLS

C501

.1/100

D501

R501

44.2K, 1/4W, 1%

R526

47K

F501

1 /8 AMP FAST

C601

500/50

DM601

DIGITAL METER

INPUT CONTROL CABLE CONNECTION

C504

4.0/50

THRU

1A, 400V

R502

500 TRIMMER

R527

47K

BLOW FUSE

C602

4.7/35

C505

.47/50

D522

6.8V, 1 /2W

R503

4.75K, 1/4W, 1%

R528

22K

SBS501

SILICON BILATERAL

C603

.022/25

S7B

SPDT, VOLTS SET-ACTUAL

COMMON CONNECTION TO ANALOG POWER

C506

.022/25

DZ502

R504

100K

R529

22K

SWITCH

C604

.022/25

SUPPLY 510

A5H

C507

.022/25

DZ503

5.1V, 1/2W

R505

27K

R530

27K

T501

24 VAC, 185 mf

D601

C508

39/20

DZ504

20V, 1W

R506

15K

R531

100K

SECONDARY

D602

1A, 400V

SCHEMATIC LOCATION REFERENCE

C509

.022/25

DZ505

6.2V, 1/2W

R507

10K

R532

27K

TP501

150V, 10J

D603

NOTES:

C510

1.8/20

DZ506

15V, 1W

R508

2.2K

R533

10K

D604

HORIZONTAL CO-ORDINATE LETTER

C511

.022/25

DZ507

6.8V, 1/2W

R509

2.7K

R534

100

N.A. THESE CAPACITORS ARE LOCATED

VERTICAL CO-ORDINATE NUMBER

C512

4.7/35

L501

33uH, 110mA

R510

4.7K

R535

ON THE R.F. BYPASS BOARD.

SCHEMATIC IDENTIFICATION LETTER

C513

27/35

L502

33uH, 110mA

R511

100K

R536

10K

R601

24.3K, 1/4W, 1%

(SEE SCHEMATIC A).

C514

4.7/35

OCI501

OPTO-ISOLATOR

R512

R537

33K

R602

2K TRIMMER

C516

.022/25

OCI502

R513

2.7K

R538

56K

R603

2.80K, 1/4W, 1%

N.B. SEE L6682-3A SCHEMATIC FOR

2N4123

C517

.47/50

Q501

R514

2K TRIMMER

R539

27K

SUPERSEDED G1556-1 VOLAGE

UNLESS OTHERWISE SPECIFIED, COMPONENT VALUES OF:

C518

39/20

Q503

2N5816

R515

5.6K

R540

5K TRIMMER

X601

+5V VOLTAGE REGULATOR

BOARD.

CAPACITORS = MFD/VOLTS

C519

.0047-.005/1400

Q505

2N4123

R516

100K

R541

1K, 12W

RESISTORS = OHMS, 1 2 /WATT

C520

.022/25

Q506

2N4857

R517

R542

470

FOR VOLTMETER P.C. BOARDS

N.C. EARLIER VOLTAGE BOARDS DO

C521

.022/25

Q507

2N5816

R518

100K

R543

68K

SINCE COMPONENTS OR CIRCUITRY ON A PRINTED

6682-

C522

.022/25

Q508

2N5816

R519

39K

R544

15K

L6685-1 OR HIGHER USE S21143

NOT HAVE THIS RECEPTACLE, AND

CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING THE

C523

.022/25

X501

QUAD OP-AMP

R520

15K

R545

15K

SCHEMATIC FOR COMPONENT

LEAD 688A WAS 688.

INTERCHANGEABILITY OF A COMPLETE BOARD, THIS

C524

4.7/35

X502

QUAD OP-AMP

R521

56K

R546

270

VALUES AND CIRCUIT CONNECTIONS.

C525

.022/25

R522

330K

R547

270

DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS

C526

.47/50

R523

22K

R548

100

OR CIRCUITRY OF CONTROLS HAVING A COMMON

C527

.01/200

R524

27K

R549

270

CODE NUMBER.

C528

.022/25

R525

3.3K

A.N.S.I. ELECTRICAL SYMBOLS PER E1537

11-17-95G
No.
UNLESSOTHERWISE SPECIFIED TOLERANCECh'ge. Sht.	9-27-85E	11-14-86L	ON ALL ANGLES IS .5 OF A DEGREE 3-6-92B	7-10-92A	3-25-94
UNLESSOTHERWISE SPECIFIED TOLERANCECh'ge. Sht.	ON HOLE SIZES PER E2056 ON 2 PLACE DECIMALS IS .02 ON 3 PLACE DECIMALS IS .002		ON ALL ANGLES IS .5 OF A DEGREE 3-6-92B	MATERIAL TOLERANCE t(" ") TO AGREE	WITH PUBLISHED STANDARDS.
THIS SHEET CONTAINS PROPRIETARY INFORMATION	OWNED BY THE LINCOLN ELECTRIC CO. AND IS	NOT TO BE REPRODUCED, DISCLOSED OR USED	WITHOUT THE EXPRESS PERMISSION OF	THE LINCOLN ELECTRIC CO.
CODES		9147
CONTROL		8400	8993
FOR NA-5		N.B.

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not avail- able from Lincoln Electric. This information is provided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.

592	D514
D7A
525
A5H

Lincoln Electric NA-5SF, NA-5NF service manual Voltage PC Board Schematic, Return to

Models: NA-5S NA-5N NA-5SF NA-5NF

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ELECTRICAL DIAGRAMS