Lincoln Na5 Service Manual

							G-11
ELECTRICAL DIAGRAMS
NA-5
METER PC BOARD  SCHEMATIC & LAYOUT
515
21143
514
SETS
SPEED
512
511
ACTUAL
516
513
VOLTS
TO DIGITAL METER
510A 510B
10 VAC
2
+5V
602
WIRE
CIRCUIT BOARD
B3
J142
J143
J1410
J145
J149
J147
J144
J141
J146
J148
D3
50050VC1
C3
OUT
IN
GND
X1D5
4.735VC2
D2D1
B6
B2
B5
B1
2.8KR324.3KR12KCWR2
C4
D4
1
5
518510
517
510C
601
TP5
A C E
4  D
TP4
562
510C
518 510
+5V
3
N.A.
UNLESS OTHERWISE SPECIFIED)
MAY CHANGE
SUPPLY
LABELS
POWER SUPPLY SOURCE POINT
VOLTAGE NET
FRAME CONNECTION
RESISTORS = Ohms (
(
CAPACITORS =
MFD
WITHOUT AFFECTING
B4
CODE NUMBER.
SINCE COMPONENTS OR CIRCUITRY ON
OF A COMPLETE
NOTES :
CONTROLS HAVING A COMMON
DIODES =
BOARD.
UNLESS OTHERWISE SPECIFIED)
(UNLESS OTHERWISE SPECIFIED)
TP4
1/4W
GENERAL INFORMATIONELECTRICAL SYMBOLS PER E1537
.022/50V
A PRINTED
THIS DIAGRAM MAY NOT
SHOW THE EXACT COMPONENTS
THE INTERCHANGEABILITY
CLEVELAND, OHIO U.S.A.
ON ALL ANGLES IS + .5 OF A DEGREEON 3 PLACE DECIMALS IS + .OO2MATERIAL TOLERANCE (t) TO AGREE
DR.
WITH PUBLISHED STANDARDS
FM
21143S
SHT.
9-23-93
CHK.
NONE
DATESCALE
NO.
ON HOLES SIZES PER E-2056
Chge.Sht.No.
ON 2 PLACE DECIMALS IS + .O2
UNLESS OTHERWISE SPECIFIED TOLERANCE
THE LINCOLN ELECTRIC CO.
TYPE
METER BOARD SCHEMATIC
SUBJECT
SUPSDG.
COMMON CONNECTION
EQUIP.
EARTH GROUND CONNECTION
OR CIRCUITRY OF
1A, 400V
FILE: S21143_1CA
LN-9, LN-9F, NA-5
3-25-94
B
G-11
NOTE:Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Cir
cuit Boar
d Components are not a
vail
-
ab
le fr
om 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.
REQD
ITEM
J14  
L6685-1 METER
R3    R1   
C4    C2  
 R2  
 C1  
 X1  
D5   
D4   
D3   
D2   
D1   
517
518 510 602
510C 601
C3   
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							G-12
ELECTRICAL DIAGRAMS
NA-5
MISCELLANEOUS PC BOARDS
IDENTIFICATION
PART NO.
REQD
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 SLOWAMP21POWER BLOW
SLOW 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 Cir
cuit Boar
d Components are not a
vail
-
ab
le fr
om 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.
REQD
ITEM
NA-5 LOGIC
L6242-2
 J3 
R6   R3   
D9   
R5   D11  
D19  
R24  
R27  
D20  
D23  
C21  Q4   LED 7KR30  
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  
     
     
PROCEDUREBURNBACK
WELDCRATER 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  123456789101112
  Q2  
  Q1  
 Y1  
ITEMREQD PART NO.DESCRIPTION
CAPACITORS = MFD/VOLTS
 B1    B2    B3    B4    B5    B6  
B7   
C1    C2   
C3   
C4   
C5   
C6   
RF BYPASSM14133-1
621 667 87 531 626
627
GND
PO
WER BO
ARD
LOGIC BO
ARD
PR
OCEDURE BO
ARD
BYP
ASS BO
ARD
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