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G-6
ELECTRICAL DIAGRAMS
SQUARE WAVE TIG 355
Protection PC Board (M16062) Schematic
SUPPLY VOLTAGE NET
FRAME CONNECTION
COMMON CONNECTION
3000V
.0047
C4
J23
1
J23
4
EARTH GROUND CONNECTION
POWER SUPPLY SOURCE POINT
NOTES :
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
NUMBER.
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
J23
2
MFD
CAPACITORS =
RESISTORS = Ohms (
UNLESS OTHERWISE SPECIFIED)
1A, 400V
ELECTRICAL SYMBOLS PER E1537
DIODES =
UNLESS OTHERWISE SPECIFIED)
GENERAL INFORMATION
(
1/4W
.022/50V
LABELS
(UNLESS OTHERWISE SPECIFIED)
_
_
_
LAST NO. USED
D-
R-
C-
J23
5
J23
3
.39mH
L4
.39mH
L1
J22
5
J22
4
J22
1
J22
2
J22
6
3000V
.0047
C5
3000V
.0047
C1
3000V
.0047
C2
3000V
.0047
C6
J22
3
.39mH
L2
J23
8
3000V
.0047
C3
.39mH
L6
.39mH
L3
J23
7
.39mH
L5
16115
5-29-90SPA
SQARE WAVE TIG 350
PROTECTION P.C. BOARD SCHEMATIC
MK/DRS
NONE
16115
GM/BS 1-12-90
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
THE LINCOLN ELECTRIC CO.
CLEVELAND, OHIO U.S.A.
EQUIP.
TYPE
SCALE
SUBJECT
DR
DATE 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.
M
M
WITHOUT THE EXPRESS PERMISSION OF
G-6
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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.