Lincoln Electric LT-7 Service Manual page 126

J-8
pC BOarD assEmBlY - CONTrOl BOarD - l6959-2
PCB
ASSEMBLY NOTES:
N.A.1 PLACE A HEAVY FILM OF ITEM 9 ON SURFACE OF SCR3, SCR4, AND HEAT SINK SURFACE. DO NOT GET ON THREADS.
N.A.2 C1 TO BE SPACED AWAY FROM HEAT SINK A MINIMUM OF .05.
N.A.3 STAND OFF FROM BOARD .25 MAX.
N.A.4 THERE MUST BE NO CRACKS IN THE EPOXY CASE, PARTICULARLY AT THE POINT WHERE THE LEADS ENTER THE CASE.
N.A.5 ASSEMBLE BY HOLDING NUT STATIONARY AND TIGHTENING SCREW. NUT MUST NOT TOUCH EPOXY CASE OF SCR.
N.A.6 CABLE TIE LATCH TO BE ON TOP OF CAPACITOR.
N.A.7 MOUNT DIODE AND HEAT SINK TO PC BOARD (CENTER DIODE ONLY).
N.A.8 COMPONENT TO BE PERPENDICULAR TO THE PCB AND MOUNTED AS SHOWN IN DETAIL A.
N.A.9 MOUNT COMPONENT WITH THE RESISTOR LUGS AGAINST THE PC BOARD AS SHOWN IN DETAIL B.
ENCAPSULATION NOTES:
N.E.1 DO NOT COAT WITH ENCAPSULATION MATERIAL.
N.E.2 COAT CABLE TIE AROUND CAPACITOR WITH ENCAPSULATION MATERIAL.
N.E.3 ENCAPSULATION MATERIAL TO FLOW UNDER CAPACITOR.
N.E.4 BEFORE ENCAPSULATION, PLACE A BEAD OF ITEM 4 TO COVER THE LEADS UP TO THE BOTTOM OF THE COMPONENT, BUT NOT
COVERING MORE THAN 10% OF THE COMPONENT SURFACE.
N.E.5 BEFORE ENCAPSULATION, PLACE A BEAD OF ITEM 4 TO COVER THE LEADS AND ENDS OF THE COMPONENT. COMPONENT TO BE
MOUNTED AGAINST THE PC BOARD.
N.E.6 COMPLETELY COVER THE LEADS, LUGS, AND LOWER ENDS OF THE RESISTOR WITH ITEM 4. SEE DETAIL B.
N.E.7 DO NOT COAT HEATSINK WITH ENCAPSULATION MATERIAL .50 ± .12 ABOVE COMPONENT SIDE SURFACE. ENCAPSULATION
MATERIAL MAY RUN INTO RESTRICTED AREA, BUT NO MORE THAN 10% OF SURFACE AREA MAY BE COVERED.
GENERAL NOTES:
N.G.1 CAUTION: THIS ASSEMBLY IS SUBJECT TO DAMAGE BY STATIC ELECTRICITY. SEE E2454 BEFORE HANDLING.
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 pro-
vided 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.
ENGINEERING CONTROLLED CALLED OUT NOTE N.G.1
CHANGE DETAIL:
No
MANUFACTURER:
P.C. BOARD INFORMATION
MAKE FROM S19399 (MAKES 4 BOARDS PER PANEL,
SEE ELECTRONIC FILE FOR ADDITIONAL INFORMATION)
R1
BLANK PART NUMBER L6959-S
LUG
SEALANT LEAD
DETAIL B
5.35 ±.04
5.15
N.E.2, N.E.3, N.A.6
ALTERNATE
COMPONENT
2.90
PRIMARY
COMPONENT
R59 & R60 5
DETAIL A XXXXX
X
X
XXXXX
X
X
X
X
X
X
X
.25
0
N.A.8, N.E.4
0 .25
N.A.8, N.E.6
ElECTriCal Diagrams
N.G.1.
X
X
X
X
X
X X
X
X
X X
X X
X
X X
X
X
X X
X
N.E.5
2
3.35 N.A.8, N.E.4 6.85
7.15 ±.04
.50 ±.12
N.E.7
MANUFACTURED AS:
L6959-2S0
IDENTIFICATION CODE
PROPRIETARY & CONFIDENTIAL:
MANUFACTURING TOLERANCE PER E2056
UNLESS OTHERWISE SPECIFIED TOLERANCE:
ON 2 PLACE DECIMALS IS ± .02 in. ( ± 0.5 mm)
ON 3 PLACE DECIMALS IS ± .002 in. ( ± 0.05 mm)
ON ALL ANGLES IS ± .5 OF A DEGREE
MATERIAL TOLERANCE (" ") TO AGREE
WITH PUBLISHED STANDARDS.
DO NOT SCALE THIS DRAWING
ITEM QTY PART NUMBER
1 1 SEE BLANK INFO PC BOARD BLANK
2 2 CF000005
2 S14008-7
2 CF000003
3
2 E106A-13
2 T13746
4 .5 OZ. E2861
5 1 T13770-2
6 3 E2387-#20-2.00
1 S14367-1
N.A.7 7
1 CF000354
9 AS REQ'D E1868
REFER TO ELECTRONIC COMPONENT DATABASE FOR SPECIFICATIONS ON ITEMS LISTED BELOW
REFERENCES QTY PART NUMBER
C1 1 S13490-1
C2 1 S13490-86
C3, C4, C6, C16 4 S13490-102
C7 1 T11577-26
C8, C10, C22 3 S13490-42
N.A.1, N.A.5
C13, C14 2 S13490-96
C17, C18, C19, C20, C21, C23 6 S16668-5
D4, D5 2 T12199-2
3
D6, D7, D8, D9, D10, D11, D12, D13,
12 T12199-1
D14, D15, D16, D17
DZ1 1 T12702-41
N.E.1 J9 1 T13160-64
N.E.1 J12 1 T13160-22
LED1A, LED1B, LED1C, LED1D,
5 T13657-2
LED1E
N.A.3, N.A.4
PT1, PT4, PT5 3 T12737-2
Q1 1 T12704-16M3A
Q2 1 S15306
6
Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10 8 T12704-68
QU1, QU3 2 T12707-4
7 R1 1 T12300-88
N.A.7
R2, R41 2 S19400-1333
R4, R31, R43, R44, R45, R46, R47,
R48, R49, R50, R51, R52, R53, R54, 16 S19400-2002
R55, R61
R5, R8, R13 3 S19400-2212
N.A.2
R6, R12, R27 3 S19400-4751
R7 1 S19400-1502
R9, R14, R22, R25, R32, R38, R63 7 S19400-1002
R10, R34 2 S19400-1501
1
R11 1 T10812-36
R15, R23, R24 3 S19400-1000
R17 1 S19400-47R5
R18, R19, R21, R37, R39 5 S19400-6811
R20 1 S19400-1372
R26 1 S19400-6810
R28, R29 2 S19400-4752
R33 1 S19400-2672
R36 1 S19400-1782
R40 1 S19400-3322
R58 1 S24376-1
R59 1 S18380-8
R60 1 S18380-13
R62 1 S19400-3320
SCR1, SCR2 2 S15161-14
SCR3, SCR4 2 S15161-6
TP1 1 T13640-14
MAKE PER E1911
ENCAPSULATE WITH E1844
TEST PR E2209-C
SCHEMATIC REFERENCE: L8943-2S0
CAPACITORS = MFD/VOLTS
RESISTORS = OHMS
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN GLOBAL, INC. AND MAY NOT BE DUPLICATED, COMMUNICATED
TO OTHER PARTIES OR USED FOR ANY PURPOSE WITHOUT THE EXPRESS WRITTEN PERMISSION OF LINCOLN GLOBAL, INC.
SCALE:
CONTROL: CLEVELAND EQUIPMENT TYPE: LT TRACTOR
1:1
DRAWN BY: fivory
IF PRINTED
SUBJECT: CONTROL P.C. BOARD ASSEMBLY
@ A2 SIZE
t ENGINEER: -
UNITS:
APPROVAL
MATERIAL PROJECT
UF -
APPROVED: DRS INCH
DISPOSITION: DATE:
NUMBER:
J-8
DESCRIPTION
#6-32HN
HEAT SINK,
#6-32 X .375RHS
LOCK WASHER
#6-32HN - NICKEL
SEALANT
CABLE TIE
JUMPER
DIODE & HEATSINK ASSEMBLY
#10-32HN
THERMAL COMPOUND
DESCRIPTION
CAPACITOR,POLYESTER
FILM,PEF,0.47MF,400V,10%,RIDID
CAPACITOR,ALEL,50,250VNP,+30/-10%
CAPACITOR,PEMF,.047,100V,10%
CAPACITOR,PEF,0.1,100V,10%
CAPACITOR,TAEL,1.0,35V,10%
CAPACITOR,PEMF,0.15,200V,10%
CAPACITOR,CEMO,.022,50V,20%
DIODE,AXLDS,1A,1000V
DIODE,AXLDS,1A,400V
ZENER DIODE,5W,24V,5%,1N5359B
CONNECTOR,PCB,PLUG,9-PIN
CONNECTOR,PCB,PLUG,12-PIN
LED,T-1,3/4,RED,HLMP-3003
TRANSFORMER,PULSE,3-WINDING,1:1:1
TRANSISTOR,NPN,T225,0.5A,250V,2N5655
TRANSISTOR
TRANSISTOR,NPN,TO226,0.5A,40V,2N4401
TRANSISTOR,PUT,TO92,2N6027
RESISTOR,WW,20W,50,5%
RESISTOR,MF,1/4W,133K,1%
RESISTOR,MF,1/4W,20.0K,1%
RESISTOR,MF,1/4W,22.1K,1%
RESISTOR,MF,1/4W,4.75K,1%
RESISTOR,MF,1/4W,15.0K,1%
RESISTOR,MF,1/4W,10.0K,1%
RESISTOR,MF,1/4W,1.50K,1%
TRIMMER,ST,1/2W,5K, 10%,LINEAR
RESISTOR,MF,1/4W,100,1%
RESISTOR,MF,1/4W,47.5,1%
RESISTOR,MF,1/4W,6.81K,1%
RESISTOR,MF,1/4W,13.7K,1%
RESISTOR,MF,1/4W,681,1%
RESISTOR,MF,1/4W,47.5K ,1%
RESISTOR,MF,1/4W,26.7K,1%
RESISTOR,MF,1/4W,17.8K,1%
RESISTOR,MF,1/4W,33.2K,1%
RESISTOR,WW,10W,30,5%
THERMISTOR,PTC,6.7OHMS,320MA
THERMISTOR,PTC,2.9OHMS,0.600A
RESISTOR,MF,1/4W,332,1%
SCR,TO220,12A,600V,2N6398
SCR,TO220,12A,400V,2N6397
MOV,150VRMS,13J,7MM
FOR PARTS ORDERS:
SEAL TRIMMER ADJUSTING SCREW WITH A DROP OF
E4018 AFTER PROPER TRIMMING HAS BEEN DONE.
INCLUDE T11590-90 AND S24590-1PRINT.
1 1
PAGE ___ OF ___
DOCUMENT DOCUMENT
NUMBER: REVISION:
L6959-2
H.01
REFERENCE:
CRM41787
-
lT-7 TraCTOr