Meter Pc Board Schematic & Layout - Lincoln Electric NA-5N Service Manual

G-11
METER PC BOARD SCHEMATIC & LAYOUT
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.
514 515 511 512
SET
516 513
WIRE
SPEED
VOLTS
517 518 510
B5 B6 B2
C4
TP4
NOTES :
GENERAL INFORMATION
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED
ELECTRICAL SYMBOLS PER E1537
CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING
CAPACITORS =
THE INTERCHANGEABILITY OF A COMPLETE BOARD.
THIS DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS RESISTORS = Ohms (
OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE NUMBER. DIODES =
UNLESS OTHERWISE SPECIFIED TOLERANCE
Ch'ge.Sht.No.
ON HOLES SIZES PER E-2056
3 - 2 5 - 9 4
ON 2 PLACE DECIMALS IS + .O2
ON 3 PLACE DECIMALS IS + .OO2
ON ALL ANGLES IS + .5 OF A DEGREE
MATERIAL TOLERANCE ("t") TO AGREE
WITH PUBLISHED STANDARDS
517
R1
C4
R2
R3 601
C3
510C
518
510
602
J14
C2
D2 D4 D5
D1 D3
L6685-1 METER
X1
C1
ELECTRICAL DIAGRAMS
ACTUAL
510A 510B
TO DIGITAL METER
562 TP4 510C +5V +5V
518 510
B
A 3 4 E C 2 1
510C
6 3 4 10 8 2 1 7
B3
J14 J14 J14 J14 J14 J14 J14 J14
24.3K
TP5
C W
2K
OUT
C2
4.7
35V
GND
C3
2.8K
LABELS
SUPPLY VOLTAGE NET
M F D ( .022/50V
UNLESS OTHERWISE SPECIFIED)
POWER SUPPLY SOURCE POINT
1/4W UNLESS OTHERWISE SPECIFIED)
1A, 400V (UNLESS OTHERWISE SPECIFIED)
COMMON CONNECTION
EQUIP.
THE LINCOLN ELECTRIC CO.
TYPE
CLEVELAND, OHIO U.S.A.
SUBJECT
NONE
SCALE
F M 9-23-93
DR. DATE CHK.
ITEM
10 VAC
D 5
602 601
9 5
B4 B1
J14 J14
D1
D5
D2
X1
IN C1
500
50V
D3
D4
FILE: S21143_1CA
FRAME CONNECTION
EARTH GROUND CONNECTION
LN-9, LN-9F, NA-5
METER BOARD SCHEMATIC
SHT.
S
21143
SUP'S'D'G. NO.
REQ'D PART NO. IDENTIFICATION
G-11
NA-5