Electrical Diagrams - Lincoln Electric SHIELD-ARC SVM128-A Service Manual

G-4
Idler PC Board (M13708) Schematic
TO REED SW.
RED
T13157-14
1
B209
511
D7
5.11K
D8
C9
B210
1
TO
CURRENT
XFMR.
B211
1
BLUE
AUSTRALIA
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.

ELECTRICAL DIAGRAMS

NOT USED
14
3 16
DZ1
C3 C4
10V
50 C1
X1 X2
5 W
15V
LM2901
4536B
GND
12
8
GND
GND
10K
13.7K
11
R17
13
1.00K
X1
-D
10
C7
10K
Q2
R14 600mA
40V
15.0K
C5 D3
R
NOTES :
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
NUMBER.
UNLESS OTHERWISE SPECIFIED TOLERANCE
ON HOLES SIZES PER E-2056
ON 2 PLACE DECIMALS IS + .O2
ON 3 PLACE DECIMALS IS + .OO2
ON ALL ANGLES IS + .5 OF A DEGREE
MATERIAL TOLERANCE ("t") TO AGREE
CANADA FRANCE WITH PUBLISHED STANDARDS
9
X1 -C
R8
R9 R15
8 +t
15.0 15.0
56
GND
10K
R13
13.7K
C10
.047
100V
22.1K
R20
33.2K
16
5 1
SET V DD
2 2 15
RESET MONO IN
X1
-B
X2
4 3 14
IN 1 OSC INH
4 13
OUT 1
DECODE
5 12
OUT 2 D
6 11
8 BY-PASS C
7 10
CLOCK INH B
8
9
V
SS A
4536B
C2
22.1K
GENERAL INFORMATION
ELECTRICAL SYMBOLS PER E1537
CAPACITORS =
RESISTORS = Ohms (
DIODES =
Ch'ge.Sht.No.
THE LINCOLN ELECTRIC CO.
10-29-93J
CLEVELAND, OHIO U.S.A.
DR. I.E.B.
D2
YEL B213
1
TO BATTERY
D1
TO SOLENOID
1
WHITE
B212
47.5K
D
R6
C8
Q1
10K
133K
15A
R5
60V
G
S
DZ3
15V
DZ2
7
X1 -A
27V
1W
1
5 W
6
R12
26.7K
D5
1N4936
3.32K
C6
18 .5
15V 5 W
P.C.BOARD IS CONNECTED DIRECTLY GND
TO FRAME GND THRU MOUNTING SCREW
LAST NO. USED
R- 21
C- 10
M F D ( .022/50V UNLESS OTHERWISE SPECIFIED)
LABELS
D- 8
1/4W UNLESS OTHERWISE SPECIFIED)
1A, 400V (UNLESS OTHERWISE SPECIFIED)
SUPPLY VOLTAGE NET
POWER SUPPLY SOURCE POINT
COMMON CONNECTION
FRAME CONNECTION
EARTH GROUND CONNECTION
EQUIP.
ENGINE WELDERS
TYPE
IDLER PCB SCHEMATIC
SUBJECT
NONE
SCALE
SHT.
S16477
DATE 2/10/93 CHK. SUP'S'D'G. NO.
G-4
M16989_2DE
M M
16989
SA-250