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G-11
ELECTRICAL DIAGRAMS
NA-5
METER PC BOARD SCHEMATIC & LAYOUT
515
21143
514
SET
S
SPEED
512
511
ACTUAL
516
513
VOLTS
TO DIGITAL METER
510A 510B
10 VAC
2
+5V
602
WIRE
CIRCUIT BOARD
B3
J14
2
J14
3
J14
10
J14
5
J14
9
J14
7
J14
4
J14
1
J14
6
J14
8
D3
500
50V
C1
C3
OUT
IN
GND
X1
D5
4.7
35V
C2
D2
D1
B6
B2B5
B1
2.8K
R3
24.3K
R1
2K
CW
R2
C4
D4
1
5
518 510517
510C
601
TP5
A C
E
4 D
TP4562
510C
518 510
+5V
3
N.A.
UNLESS OTHERWISE SPECIFIED)
MAY CHANGE
SUPPLY
LABELS
POWER SUPPLY SOURCE POINT
VOLTAGE NET
FRAME CONNECTION
RESISTORS = Ohms (
(
CAPACITORS =
MFD
WITHOUT AFFECTING
B4
CODE NUMBER.
SINCE COMPONENTS OR CIRCUITRY ON
OF A COMPLETE
NOTES :
CONTROLS HAVING A COMMON
DIODES =
BOARD.
UNLESS OTHERWISE SPECIFIED)
(UNLESS OTHERWISE SPECIFIED)
TP4
1/4W
GENERAL INFORMATION
ELECTRICAL SYMBOLS PER E1537
.022/50V
A PRINTED
THIS DIAGRAM MAY NOT
SHOW THE EXACT COMPONENTS
THE INTERCHANGEABILITY
CLEVELAND, OHIO U.S.A.
ON ALL ANGLES IS + .5 OF A DEGREE
ON 3 PLACE DECIMALS IS + .OO2
MATERIAL TOLERANCE ("t") TO AGREE
DR.
WITH PUBLISHED STANDARDS
FM
21143
S
SHT.
9-23-93
CHK.
NONE
DATE
SCALE
NO.
ON HOLES SIZES PER E-2056
Ch'ge.Sht.No.
ON 2 PLACE DECIMALS IS + .O2
UNLESS OTHERWISE SPECIFIED TOLERANCE
THE LINCOLN ELECTRIC CO.
TYPE
METER BOARD SCHEMATIC
SUBJECT
SUP'S'D'G.
COMMON CONNECTION
EQUIP.
EARTH GROUND CONNECTION
OR CIRCUITRY OF
1A, 400V
FILE: S21143_1CA
LN-9, LN-9F, NA-5
3-25-94
B
G-11
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.
IDENTIFICATION
PART NO.
REQ'D
ITEM
J14
L6685-1 METER
R3
R1
C4
C2
R2
C1
X1
D5 D4
D3
D2
D1
517
518
510
602
510C
601
C3
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