Meter Board Schematic - Lincoln Electric SVM138-A Service Manual

G-9

Meter Board Schematic

513
C 3
9
12 1
10
11
561 560 519
B 8 B 7 B11
61.9K
C 7 C6
C W
5 K
NOTES :
N.A. SINCE COMPONENTS OR CIRCUITRY ON
CIRCUIT BOARD
THE INTERCHANGEABILITY
THIS DIAGRAM MAY NOT
OR CIRCUITRY OF
U N L E S S O T H E R W I S E S P E C I F I E D T O L E R A N C E
O N H O L E S S I Z E S P E R E - 2 0 5 6
O N 2 P L A C E D E C I M A L S I S + . O 2
O N 3 P L A C E D E C I M A L S I S + . O O 2
O N A L L A N G L E S I S + . 5 O F A D E G R E E
MATERIAL TOLERANCE ("t") TO AGREE
W I T H P U B L I S H E D S T A N D A R D S
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
available 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.
511 512 514 515
S E T A C T U A L
516
C 2
C1
8
5
4
HI IN/MIN
M / M I N
2 3 6
L O 7 V O L T S
517 518 562 510 510C
B 5 B6 B 9 B 2 B3
3.74K
13.7K
24.3K
C 5
C 4
C W
C W C W
5 0 0
2 K 2 K
2.8K
TP4
G E N E R A L I N F O R M A T I O N
A PRINTED
ELECTRICAL SYMBOLS PER E1537
MAY CHANGE WITHOUT AFFECTING
CAPACITORS =
OF A COMPLETE BOARD.
SHOW THE EXACT COMPONENTS RESISTORS = Ohms (
CONTROLS HAVING A COMMON CODE NUMBER.
DIODES = 1A, 400V
ChÕge.Sht.No.
3 - 2 5 - 9 4
ELECTRICAL DIAGRAMS
510A 510B
TO DIGITAL METER
518 562 TP4 510C 510 +5V
A 3 4 E C 2
6 3 4 10 8 2
J14 J14 J14 J14 J14 J14
TP5
C 2
4.7
35V
C3
2 7
10V
L A B E L S
MFD ( .022/50V
UNLESS OTHERWISE SPECIFIED)
1/4W UNLESS OTHERWISE SPECIFIED)
(UNLESS OTHERWISE SPECIFIED)
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
NONE
S C A L E
F M 9-24-93
DR. D A T E CHK.
10 VAC
+5V
1 B D 5
602 601
1 7 9 5
B 4
J14 J14 J14 J14
D1
D 5
D 2
X1
C1
O U T IN
5 0 0
50V
D3
G N D
D 4
FILE: S21146_1CB
FRAME CONNECTION
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
EARTH GROUND CONNECTION
COMMON CONNECTION
EQUIP.
LN-9H & LN-9FH (METRIC)
T Y P E
METER BOARD SCHEMATIC
S U B J E C T
SHT.
S
21146
SUPÕSÕDÕG. NO.
G-9
B1
LN-9 GMA