Lincoln Electric NA-5NF, NA-5SF Option & Timer PC Board Schematics, Timer Board

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G-10	ELECTRICAL DIAGRAMS
OPTION & TIMER PC BOARD SCHEMATICS

G-10

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A

B

C

515

D

D8C

0

R016

D001

583

TIME

OVER

6

X002

R017

1

4

D002

OVER

515

5

A

R015

515

500

D8C

C004

D8C

D9C

R013

D9C

D003

588A

500

584

R014

1

X002

3

R018

TIME

2

B

D004

INITIATE

520

500

B1C

D9C

C002

R007

R001

B3F

632

2

588

13

X002

8

X002

Q001

CW

CURRENT

R012

12

C

11

D

10

SPEED

X001

9

R010

R008

R009

R002R003

4

A 3

5

R011

Q002

510P

B3C

562

PROCEDURE

3

ENABLE

OPTION BOARD

500

D9C

4

5

6

7

E

635		R004
C4A	CW
X001		R005
	8		VOLTS
9 B
6		R006

F

515

G

H

J

K

L

M

D8C

515

R915

TIMER BOARD

I

X901

D8C

R901

8

D901

5

INITIATE

A

10

O

9

X901

R916

B

6

4

D902

OVER

515

1

15

9

7

1 15

9

7

1 15

9

7

N.C.

500

3

6

3

6

3

6

D9C

PE

Q4 Q3

Q2

Q1

C

PE

Q4

Q3

Q2

Q1

C

PE

Q4

Q3

Q2

Q1

C

D8C

13

CF

0

12

13

CF

0

12

13 CF

0

12

X902

X903

X904

1

15

9

7

INH

4

INH

4

INH

4

3

C 6

Q4

Q3

Q2

Q1

DP4

DP3

DP2

MR 10

DP4

DP3

DP2

MR 10

DP4

DP3

DP2

MR 10

13

0

12

DP1

DP1

DP1

X905

2

14

11

5

2

14

11

5

2

14

11

5

INH

4

R905

R904

R903

R902

R909

R908

R907

R906

R913

R912

R911

R910

515

DP4

DP3

DP2

MR 10

D8C

DP1

515

515

515

2

14

11

5

D8C

D8C

D8C

500

500

500

FROM

655

D9C

D9C

D9C

PROCEDURE

R914

C907

PC BOARD

100 HZ TIME

S901A

S901B

S901C

MOST SIGNIFICANT DIGIT

LEAST SIGNIFICANT DIGIT

BASE OUTPUT

500

D9C

E
				6682-5
			SHT. NO. L
SCHEMATIC	CIRCUIT				SUP'S'D'G
				10-2-81
NA-5
EQUIP. TYPE		SUBJECT			REF.
THE LINCOLN ELECTRIC CO. CLEVELAND, OHIO U.S.A.
			SCALE NONE		DR DADDATE 7-2-92CHK

No.
Ch'ge. Sht.	9-7-84A	1-31-86A	7-11-86D	3-6-92B	7-10-92A
UNLESS OTHERWISE SPECIFIEDTOLERANCE	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	MATERIAL TOLERANCE t(" ") TO AGREE	WITH PUBLISHED STANDARDS.
INFORMATION	CO.AND IS OR USED		OF

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8

		520								515
		B1C					14			D8C		14
							X001				X002
9		510P	C001		1	2 10 7 111213				500	C003	7
		B3C								D9C
L
	515
6682
	D6C				14			16		16	16		16
-5				X901				X902		X903	X904		X905
	500	C902		1 2	7 1213		C903	8	C904	8	8	C906	8
	D9C			POWER SUPPLY DISTRIBUTION AND BYPASSING

C902

THRU

C906

C907

D901

D902

R901

THRU

R915

R916

N.C.

X901

X902

THRU

X904

X905

X906

		FOR OPTION P.C. BOARD L6246-2
		OR HIGHER USE M16795 SCHEMATIC
		FOR COMPONENT VALUES AND
		CIRCUIT CONNECTIONS.
TIMER P.C. BOARD		OPTION P.C. BOARD
.022/25	C001	.022/25	Q001	2N 4125
	THRU		Q002	2N 4123
100pf/100	C004		X001	QUAD ANALOG
		5.6K
1A, 400	R001			SWITCH
	R002	10K, 2W MULTI-TURN POT	X002	QUAD 2 INPUT
1A, 400	R003	330		NAND GATE
	R004	5.6K
	R005	10K, 2W MULTI-TURN POT	D001
22K, 1/4W	R006	1.8K	THRU	1A, 400V
	R007	4.7K	D004
1K	R008	47K
	R009	27K
QUAD 2-INPUT NAND GATE	R010	22K
PROGRAMMABLE	R011	47K
	R012
DIVIDE-BY-N		22K, 1/4W
	THRU
COUNTER
	R016
		1K
3 DIGIT BCD THUMBWHEEL	R017
	R018	1K
SWITCH

KEY TO SYMBOLS

COMMON CONNECTION TO ANALOG POWER SUPPLY

SCHEMATIC LOCATION REFERENCE

HORIZONTAL CO-ORDINATE LETTER

VERTICAL CO-ORDINATE NUMBER

SCHEMATIC IDENTIFICATION LETTER

N.C. X905 AND C906 ARE USED ONLY ON 100 SECOND TIMER BOARDS. BOARD JUMPER IS USED ON 10 SECOND TIMER BOARDS.

UNLESS OTHERWISE SPECIFIED, COMPONENT VALUES OF:

CAPACITORS = MFD/VOLTS RESISTORS = OHMS, 1 2 /WATT

SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING THE INTERCHANGE- ABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE NUMBER.

ELECTRICAL SYMBOLS PER E1537

THIS SHEET CONTAINS PROPRIETARY OWNED BY THE LINCOLN ELECTRIC	NOT TO BE REPRODUCED, DISCLOSED WITHOUT THE EXPRESS PERMISSION	THE LINCOLN ELECTRIC CO.
CONTROL CODES	8400	8993
FOR NA-5

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.

NA-5