Lincoln Electric NA-5N, NA-5NF, NA-5S, NA-5SF POWER BOARD LOGIC BOARD, PROCEDURE BOARD BYPASS BOARD

G-12
ELECTRICAL DIAGRAMS
NA-5
MISCELLANEOUS PC BOARDS
IDENTIFICATION
PART NO.
REQ'D
ITEM
CAPACITORS = MFD/VOLTS
RESISTORES = OHMS
D3
D2
L6252-2
NA-5 POWER
R1
R17
R21
R22
R18
R20
R19
R2
R7 R8
R9
R11
R12
R6
R4 R3
R10 R14
R15
R16
X2 X1
SCR3
SCR4
D1
C24
C22
C20
C11
C12 C10
C9
C6 C5
C8
C19
C7
C16
C17
C3
C4
C2
C13
C21
C18
C1
DZ1
D10 D8
D11
D14
D15
D13
D12
D7
D6
D5
D4
D9
J2
J1
J3
F2
F1
LED1E
LED1D
LED1C
LED1B
LED1A
LED1F
TP2
TP1
TP3
B2 B5 B4 B3 B1
R5
PT3 PT2
PT1
SCR2
SCR1
Q9
Q3
Q2
Q1
QU1
BLOW SLOW
AMP21
POWER
BLOWSLOW AMP21
FIELD
C14
C15
G-12
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.
IDENTIFICATION
PART NO.
REQ'D
ITEM
NA-5 LOGIC
L6242-2
J3
R6
R3
D9
R5
D11
D19
R24
R27
D20
D23
C21
Q4
LED 7K
R30
D21
R25
LED 7G
C19
Q2
C22
Q5
R29
D18
R22
D1 D2
X1
X5
X2
X6
X3 X4
X7
R42
R41
R20
Q11
C27
C1
C2
C3
C4
C5
C7
+
C8
+
C9
C12
J1
J2
J4
J5
LED 7A
LED 7B
LED 7C
LED 7D
LED 7E
LED 7H
LED 7J
S1 S2
C13
D7
D6
R1
D5
D4
D3
D17
R16
R15
R35
D30
D29
D31
R32
Q1
R34
R36
R38
R50
D34
D35
R14
R13
D14
R12
D16
R11
D10
R17
D32
D15
D27 D8
R18
R19
C29
R2
C6
D12
R4
R10
C11
R51
R52
R54
D22
R63
Q3
C20
R61
R23
Q7
C26
R57
R33
X8
R44
C33
Q14
Q8
C24
R56 D25
R37
D26
R55
Q9
C14
C18
R49
C35
Q15
Q16
R46
R47
C34
R45
R60
B1
B2
C15
C16 C17
C28
C30
R9
R28
Q17
C36
R48
R43
C37
Q13
Q6
C10
R59
R31
Q10
C23
R58
Q12
Q18
C31
R53
C32
DZ1
D33
R39
R40
R62
D28
D24
D13
C25
X9
PROCEDURE
BURNBACK
WELD CRATER
START
J18
J9 J8
G1566-3
B1
FRAME
J19 J11 J10
R19
R12 R10 R9 R7
R6 R4 R3 R1
R16 R15
R17 R13
R18
R14
R21
C3
C2
C9
C5
C4
C6 C7
C8
C1
D11
D9
D5
D3 D2 D1 D4
D8 D7 D6
D12
D10
X1
X2
LED1 LED2 LED3 LED4
R8 R11 R5 R2
R20
S1
1
2
3
4
5
6
7
8
9
10
11
12
Q2
Q1
Y1
ITEM REQ'D PART NO. DESCRIPTION
CAPACITORS = MFD/VOLTS
B1 B2 B3 B4 B5
B6
B7
C1
C2
C3
C4
C5
C6
RF BYPASS M14133-1
621 667 87 531 626
627
GND
POWER BOARD LOGIC BOARD
PROCEDURE BOARD BYPASS BOARD
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