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G-7
ELECTRICAL DIAGRAMS
LN-9 GMA
Trigger PC Board Schematic
GENERAL INFORMATION
1W
75V
DZ2
2.21K
R12
4.75K
R14
5
530
DZ- 2
R-
15
17950
M
LAST NO. USED
ON HOLES SIZES PER E-2056
ChÕge.Sht.No.
THE LINCOLN ELECTRIC CO.
SUPPLY
LABELS
VOLTAGE NET
C-
D-
4
EARTH GROUND CONNECTION
CAPACITORS =
MFD
UNLESS OTHERWISE SPECIFIED)
UNLESS OTHERWISE SPECIFIED)
(UNLESS OTHERWISE SPECIFIED)
SUBJECT
FRAME CONNECTION
LN-9 GMA & LN-9F GMA
AND IS NOT TO BE REPRODUCED, DISCLOSED OR USED WITHOUT THE EXPRESS PERMISSION OF
ON 3 PLACE DECIMALS IS + .OO2
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON ALL ANGLES IS + .5 OF A DEGREE
WITH PUBLISHED STANDARDS
ON 2 PLACE DECIMALS IS + .O2
MATERIAL TOLERANCE ("t") TO AGREE
EQUIP.
POWER SUPPLY SOURCE POINT
TYPE
COMMON CONNECTION
CLEVELAND, OHIO U.S.A.
SUPÕSÕDÕG.
SCALE
DR.
CHK.
NONE
DATE
5/15/95
M
NO.
SHT.
500
LM
OCI- 1
X- 1
TRIGGER PCB SCHEMATIC
(
1A
600V
D5
56.2K
R5
10.0K
R4
33.2K
R11
X1
14
8
9
50
25V
C1
1W
20V
DZ1
4.75K
R2
51.1K
R8
332
R1
56.2K
R7
X1
2
4
5
10.0K
R3
X1
13
10
11
X1
1
6
7
332
R10
56.2K
R6
2.7
50V
C2
267K
R13
10.0K
R15
2.80K
R9
1.0
35V
C3
OCI1
2
4
1
3
M
17950
24 VAC
620
621
DIODES =
TRIGGER
FILENAME: M17950_1AA
623
1A
600V
D4
1A
600V
D1
1A
600V
D2
1A
600V
D3
C4
+20V
+20V
1/4W
.022/50V
THE LINCOLN ELECTRIC CO.
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
THE LINCOLN ELECTRIC CO.
NUMBER.
NOTES :
ELECTRICAL SYMBOLS PER E1537
1A, 400V
RESISTORS = Ohms (
SWITCH
622
LM2901
X1
3
12
10-6-95B
G-7
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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.