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G-8
ELECTRICAL DIAGRAMS
NA-5
CONTROL CIRCUIT SCHEMATIC
6682-2
Ch'ge. Sht. No.
11-9-90D
7-19-91J
3-6-92B
5-15-92N
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
C201
.022/25
.047/100
.022/25
.022/25
.15/200
18/15
18/15
4.7/35
18/15
.022/25
D201
THRU
D206
D208
1A, 400 V
DZ201
6.8 V., 1 2 W.
/
Q201
2N4123
2N4123
2N4123
R201
15K
10K
33K
10K
270
15K
47K
15K
100K
X201
OCI301
TACHOMETER P.C. BOARD
S7A
COMPONENTS NOT ON P.C. BOARD
KEY TO SYMBOLS
POWER SUPPLY SOURCE POINT
COMMON CONNECTION TO ANALOG POWER
A5H
SCHEMATIC LOCATION REFERENCE
HORIZONTAL CO-ORDINATE LETTER
VERTICAL CO-ORDINATE NUMBER
CODE NUMBER.
CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING THE
SINCE COMPONENTS OR CIRCUITRY ON A PRINTED
INTERCHANGEABILITY OF A COMPLETE BOARD, THIS
DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS
OR CIRCUITRY OF CONTROLS HAVING A COMMON
UNLESS OTHERWISE SPECIFIED, COMPONENT VALUES OF:
CAPACITORS = MFD/VOLTS
RESISTORS = OHMS, 1 2 WATT/
1
2
3
4
5
6
7
B
C
D
E
F
G
H
J
K
L
M
FOR NA-5 CONTROL CODES
9147
9338
NA-5 SCHEMATIC
CONTROL CIRCUIT
DAD
NONE
6682-2
10-4-81
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
B
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C212
C213
C214
C215
C216
C217
THRU
C229
.022/25
4.7/35
.0033/200
.47/50
4/50
4.7/35
100pf/100
DZ202
DZ203
3.0 V., 1 W.
L201
L202
330 uH, 110mA
Q202
Q203
Q204
Q205
Q206
Q207
2N4125
BS170
2N4123
2N5816
2N6027
QU201
VOLTAGE REGULATOR
X202
X203
X204
F- TO -V CONVERTER
QUAD OP-AMP
QUAD OP-AMP
R203
R204
R205
R206
R207
R208
R209
R210
R211
R212
R213
R214
R215
R216
R217
R218
R219
R220
R221
R222
R223
1K
500 TRIMMER
1.00K, 1/4W, 1%
2.94K, 1.4W, 1%
100K TRIMMER
1K
1K
1K
33K
50K TRIMMER
15K
10K TRIMMER
33K
R224
R225
R226
100K
10K
1K
R227
CONTROL P.C. BOARD
R228
R229
R230
R231
R232
R233
R234
R235
R236
R237
R238
R239
R240
R241
R242
R243
15
1M
10
6.8K
10K
20K TRIMMER
27K
100
6.8K
2.7K
10K
15K
10K
15K
5.6K
15K
270
Q301
R301
R302
R304
OPTO-INTERRUPTER
2N4123
1K
15K
1.3K
DM401
DIGITAL METER
SPDT SPEED SET-ACTUAL
NOTES:
N.A. 511 IS CONNECTED TO 511A
BY CONNECTION TO
VOLTAGE P.C. BOARD.
N.B. THESE COMPONENTS ARE
LOCATED ON POWER P.C.
BOARD (SEE SCHEMATIC A).
SPEEDMETER P.C. BOARD
C401
C402
C403
THRU
C409
500/50
4.7/35
.022/25
D401
D402
D403
D404
1A, 400V
X401
+5V VOLTAGE REGULATOR
R401
R402
R403
R404
R405
R406
R407
R408
R409
R410
R411
R412
R413
R414
2K TRIMMER
2K TRIMMER
5K TRIMMER
5K TRIMMER
5K TRIMMER
5K TRIMMER
17.8K, 1/4W, 1%
2.80K, 1/4W, 1%
18.2K, 1/4W, 1%
33.2K, 1/4W, 1%
52.3K 1/4W, 1%
10
31.6K, 1/4W, 1%
51.1K, 1/4W, 1%
+
R201
C204
C201
5
6
X201
525
A5H
A5H
510
A6H
500
+
C214
C202
4
13
101211
2
3
Q207
R205
R203
R204
R243
+
C203
520
+10.00V
510P
R209
R206
525
A5H
C216
R207
L201
525
525A
A5H
555
L202
510A
TO TACH
PICK-UP
P.C. BOARD
TACH SIGNAL CONVERTER
C221
9
8
10
5
11
1
12 2
3
4
X202
C205
C206
R210
R208
CW
CAL
+
A
C217
C212
C218
500
A
2
3
+
-
4
11
R211
512
B4E
A6H
B4J
R217
ACTUAL SPEED BUFFER
C213
C215
510P
B
13
12
+
-
R242
511
B4E
B3C
B5J
SPEED
632
PROCEDURE
PC BOARD
E2D
SETTING
SET SPEED BUFFER
X203
+
14
511
C228
R218
R221
R238
C208
D
-
+
6
5
X203
R222
CONTROL
AMP
+10.00 V
REFERENCE
SUPPLY
7
CW
HI
A
-
+
2
3
1
C219
4
X204
+
C210
C220
R226
D208
C223
R227
D205
Q203
R228
R239
R230
R229
D206
C224
LO
CW
Q204
R231
C211
500
A6H
R233
R235
C229
QU201
C225
R234
DZ202
Q205
DZ203
C227
R237
R236
628
D8A
Q206
R232
540
PT
101A
C119
A1H
N.B
ARMATURE FIRING CIRCUIT
D204
B
-
+
X204
R225
8
9
10
500
A6H
Q202
C222
R224
DZ201
525
A5H
R223
D203
FEED ENABLE CIRCUIT
R212
R214
C
-
+
X203
8
9
10
R240
R241
512
511
B1G
B3G
FAST-SLOW
ACCELER
JUMPER
PIN
S
PIN
F
CW
ACC
R220 R219
+
C207
D201
R215
R216
C226
D202
Q201
525
A5H
R213
586
D7J
FEED
ENABLE
ACCELERATION CIRCUIT
R413
R414
C409
CAL
CW
142T
R411
R412
C408
CAL
CW
95S
R408
R409
C407
CAL
CW
142
R406
R407
C406
CAL
CW
R404
R405
C405
CAL
CW
R401
R402
C404
CAL
CW
57F
95 57
4
R403
TP4
C403
R410
E
C
DM401
1
2
C402
+
OUT
IN
X401
GND
+
C401
601
602
A6E
A6E
D402
D404
D403
D401
510
C7E
TP5
+5V
510P
B3C
SPEEDMETER
SPEEDMETER
POWER SUPPLY
519
ACTUAL
SET
S7A
SPEED
SET-ACTUAL
SPEEDMETER
CALIBRATION
JUMPER
511
512
B3G B1G
7
X203
1
511A
N.A.
C209
11
SCHEMATIC IDENTIFICATION LETTER
16.0 V., 1 W.
SUPPLY; 510
ELECTRICAL SYMBOLS PER E1537.
AND
FROM OPTION
G-8
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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