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G-10
ELECTRICAL DIAGRAMS
NA-5
OPTION & TIMER PC BOARD SCHEMATICS
6682-5
Ch'ge. Sht. No.
9-7-84A
1-31-86A
7-11-86D
3-6-92B
7-10-92A
t
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON HOLE SIZES PER E2056
ON 2 PLACE DECIMALS IS .02
WITH PUBLISHED STANDARDS.
ON 3 PLACE DECIMALS IS .002
ON ALL ANGLES IS .5 OF A DEGREE
MATERIAL TOLERANCE (" ") TO AGREE
EQUIP.
TYPE
SUBJECT
DR
CHK
REF.
SUP'S'D'G
SHT.
NO.
THE LINCOLN ELECTRIC CO.
THIS SHEET CONTAINS PROPRIETARY INFORMATION
OWNED BY AND IS
NOT TO BE REPRODUCED, DISCLOSED OR USED
THE LINCOLN ELECTRIC CO.
L
WITHOUT THE EXPRESS PERMISSION OF
KEY TO SYMBOLS
SCHEMATIC LOCATION REFERENCE
HORIZONTAL CO-ORDINATE LETTER
VERTICAL CO-ORDINATE NUMBER
UNLESS OTHERWISE SPECIFIED, COMPONENT VALUES OF:
CAPACITORS = MFD/VOLTS
RESISTORS = OHMS, 1 2 WATT/
1
2
3
4
6
B
C
D
E
F
G
H
J
K
L
M
FOR NA-5 CONTROL CODES
8400
8993
NA-5 SCHEMATIC
CIRCUIT
DAD
NONE
6682-5
10-2-81
7-2-92
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
EQUIP.
TYPE
SCALE
SUBJECT
DR
DATE
CHK
REF.
SUP'S'D'G
SHT.
NO.
L
E
A
SCHEMATIC IDENTIFICATION LETTER
X902
C903
8
16
515
500
D6C
D9C
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.
N.C. X905 AND C906 ARE USED ONLY ON 100 SECOND
TIMER BOARDS. BOARD JUMPER IS USED ON 10
SECOND TIMER BOARDS.
COMMON CONNECTION TO ANALOG POWER SUPPLY
OPTION P.C. BOARD
C001
THRU
C004
R001
R002
R003
R004
R005
R006
R007
R008
R009
R010
R011
R012
THRU
R016
R017
R018
.022/25
5.6K
330
5.6K
1.8K
4.7K
47K
27K
22K
47K
10K, 2W MULTI-TURN POT
10K, 2W MULTI-TURN POT
22K, 1/4W
1K
1K
Q001
Q002
X001
X002
D001
THRU
D004
2N 4125
2N 4123
QUAD ANALOG
SWITCH
QUAD 2 INPUT
NAND GATE
1A, 400V
C902
THRU
C906
.022/25
C907
100pf/100
D901
D902
1A, 400
1A, 400
R901
THRU
R915
R916
22K, 1/4W
1K
X901
X902
THRU
X904
X905
X906
QUAD 2-INPUT NAND GATE
PROGRAMMABLE
DIVIDE-BY-N
COUNTER
3 DIGIT BCD THUMBWHEEL
SWITCH
TIMER P.C. BOARD
X903
8
16
X904
8
16
X905
8
16
C906
C904
X001
1312
1312
721
X901
C902
14
N.C.
X002
7
14
C003
515
500
D8C
D9C
14
117
1021
C001
520
510P
B1C
B3C
R016
X002
A
6
5
R013
OVER
TIME
INITIATE
CURRENT
588
584
0
515
D8C
2
1
X002
B
R014
4
3
R017
R015
C004
500
R018
D9C
D003
515
D8C
500
B1C
D004
D001
515
D8C
500
D9C
D002
TIME
OVER
583
R012
12
13
C
X002
11
9
8
X002
D
10
R010R011
Q002
520
C002
R007
R008
R009
Q001
510P
B3C
500
D9C
R003
R002 R001
SPEED
CW
4
A
X001
B3F
632
3
5
C4A
635
X001
B
9
6
8
CW
R004R005
R006
VOLTS
PROCEDURE
ENABLE
562
OPTION BOARD
588A
5
7
8
9
D8C
515
3
R905
R904
R903
R902
515
D8C
S901A
MOST SIGNIFICANT DIGIT
214
11 5
DP1
DP2
DP3
DP4
X902
13
CF
PE
C
0
INH
MR
500
D9C
10
4
12
6
Q1
Q2
Q3
Q4
1
15 9
7
3
R906
515
D8C
S901B
214
11 5
DP1
DP2
DP3
DP4
X903
13
CF
PE
C
0
INH
MR
500
D9C
10
4
12
6
Q1
Q2
Q3
Q4
1
15 9
7
500
D9C
6
3
R910
515
D8C
S901C
214
11 5
DP1
DP2
DP3
DP4
X904
13
CF
PE
C
0
INH
MR
500
D9C
10
4
12
6
Q1
Q2
Q3
Q4
1
15 9
7
R907
R908
R909
LEAST SIGNIFICANT DIGIT
R911
R912
R913
10
A
X901
8
9
R915
515
I
INITIATE
R901
D8C
TIMER BOARD
3
214
11 5
DP1
DP2
DP3
DP4
X905
13
C
0
INH
MR
10
4
12
6
Q1
Q2
Q3
Q4
1
15 9
7
515
D8C
500
D9C
R914
655
100 HZ TIME
BASE OUTPUT
FROM
PROCEDURE
PC BOARD
5
6
X901
B
4
OVER
O
D902
D901
R916
515
D8C
500
D9C
N.C.
D9C
C907
ELECTRICAL SYMBOLS PER E1537
FOR OPTION P.C. BOARD L6246-2
OR HIGHER USE M16795 SCHEMATIC
FOR COMPONENT VALUES AND
CIRCUIT CONNECTIONS.
POWER SUPPLY DISTRIBUTION AND BYPASSING
G-10
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.
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