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ELECTRICAL DIAGRAMS
CLASSIC II
Idler PC Board (M13708) Schematic
-A
X1
6
1
7
B209
T13157-14
1
D7
13.7K
R18
5.11K
R21
C3
X1
13
10
11
511
R16
5W
10V
DZ1
LM2901
X1
3
12
22.1K
R3
X1
8
14
9
4536B
X2
16
8
C1
10K
R2
133K
R6
D1
47.5K
R7
10K
R1
+
t
56
R8
13.7K
R13
D
G
S
15A
60V
Q1
B212
1
D2
33.2K
R20
100V
.047
C10
B213
1
15.0
R9
15.0
R15
26.7K
R12
D8
10K
R19
C9
10K
R5
1N4936
D5
1W
15V
DZ3
-D
X1
2
4
5
GND
GND
GND
GND
WHITE
NOT USED
RED
-C
TO REED SW.
TO BATTERY
YEL
-B
5W
27V
DZ2
50
15V
C4
1.00K
R17
C7
B210
1
15.0K
R14
D3
B211
1
.5
5W
R11
18
15V
C6
C8
3.32K
R10
TO FRAME GND THRU MOUNTING SCREW
BLUE
XFMR.
TO
CURRENT
NOTES :
VOLTAGE NET
M
LAST NO. USED
SHT.
IDLER PCB SCHEMATIC
M
10
NO.
COMMON CONNECTION
POWER SUPPLY SOURCE POINT
EARTH GROUND CONNECTION
ENGINE WELDERS
C-
D-
SUBJECT
CHK.
SCALE
SUP'S'D'G.
DATE
SUPPLY
THE LINCOLN ELECTRIC CO.
AUSTRALIA
CANADA FRANCE
16989
M
C5
22.1K
R4
40V
600mA
Q2
C2
SS
4536B
V
V
8
DD
16
A
X2
SET
RESET
IN 1
OUT 1
OUT 2
8 BY-PASS
CLOCK INH
MONO IN
OSC INH
DECODE
D
C
B
1
6
3
11
10
2
13
14
5
12
7
9
4
15
NONE
RESISTORS = Ohms (
DIODES =
GENERAL INFORMATION
LABELS
21
8
UNLESS OTHERWISE SPECIFIED)
1A, 400V
GND
FRAME CONNECTION
TO SOLENOID
I.E.B.
EQUIP.
CLEVELAND, OHIO U.S.A.
DR.
S16477
(
1/4W
.022/50V
CAPACITORS =
MFD
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE
R
(UNLESS OTHERWISE SPECIFIED)
ELECTRICAL SYMBOLS PER E1537
UNLESS OTHERWISE SPECIFIED)
P.C.BOARD IS CONNECTED DIRECTLY
R-
Ch'ge.Sht.No.
MATERIAL TOLERANCE ("t") TO AGREE
WITH PUBLISHED STANDARDS
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE
NUMBER.
ON 3 PLACE DECIMALS IS + .OO2
ON ALL ANGLES IS + .5 OF A DEGREE
ON HOLES SIZES PER E-2056
ON 2 PLACE DECIMALS IS + .O2
UNLESS OTHERWISE SPECIFIED TOLERANCE
16989
2/10/93
TYPE
M16989_2DE
10-29-93J
G-8
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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.