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G-14
ELECTRICAL DIAGRAMS
SQUARE WAVE TIG 355
Meter PC Board (M15893) Layout
G-14
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.
.022/50
6
D1
D2
Q1
1
1
X1,X2,X3
1N4004
1N914
1
1
3
3
LED1,LED2,LED3
LED DISPLAY
R1
R2
R3,R4,R5,R6,R7,R8,R9,
R10,R11,R12,R13,R14,R15,
R16,R17,R18,R19,R20,R21,
R22,R23,R24,R25,R26
24
C5,C6
2
330pf/100
J7
1
HEADER
475 1/4W
1
3.32K 1/4W
100 1/4W
R27,R28
2
3.01 1/4W
X4
X5
1
1
S.S.
S.S.
METER
S.S.
M15893
M15893