Filter
Top Products
G-20
ELECTRICAL DIAGRAMS
INVER
TEC S
TT & S
TT II
G-20
Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC
Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC
Schematic - Driver Board - All Codes - (S20799)
NO
TE:
Linc
oln Elec
tric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty.
Individual Print
ed Circuit Board Components are not available from Lincoln Electric.
This in
f
ormation 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.
Capacitor Pre-charging Circuits
J16
7
J11
3
J16
8
100
R12
DRIVE
GATE
GATE
GATE
GATE
T1
6
3
7
10
4
9
8
5
1
12
J9
1
J9
4
J9
3
J11
1
J10
4
150K
R6
1
00
R7
4A
900V
Q1
20W
250
R1
1W
12V
DZ1
150K
R
3
150K
R
4
20W
250
R2
150K
R5
J9
6
J
10
6
J16
3
J10
1
J10
3
20W
250
R14
J16
1
1W
12V
DZ2
150K
R10
150K
R11
4A
900V
Q2
150K
R9
20W
250
R13
150K
R8
J16
2
J16
13
J16
12
20799
Power Switch Drive Transformer
11-4-92
LC
Ch'ge.Sht.No.
J11
S4
PROTECTION
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
DATE
SUBJECT
EQUIP.
TYPE
S2
NOTES :
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
NUMBER.
G1
FROM
SUP'S'D'G.
ON 3 PLACE DECIMALS IS + .OO2
S3
WITH PUBLISHED STANDARDS
UNLESS OTHERWISE SPECIFIED TOLERANCE
CLEVELAND, OHIO U.S.A.
TO POWER
BOARD
TO
ON HOLES SIZES PER E-2056
SWITCH
6
4
1
3
J16
MATERIAL TOLERANCE ("t") TO AGREE
S
G2
DR.
SCALE
THE LINCOLN ELECTRIC CO.
G4
BOARD
S1
G3
NONE
CHK.
PROTECTION
SHT.
NO.
S
J9,J10
4
1
2
3
ON ALL ANGLES IS + .5 OF A DEGREE
ON 2 PLACE DECIMALS IS + .O2
BD.
20799
FROM
BD.
J16
14
7
14
1
8
FILE: S20799-1AA
INVERTER WELDERS
SCHEMATIC, DRIVER BOARD
BS
6-25-93C