Electrical diagrams, Tachometer schematic, Ln-9 – Lincoln Electric LN-9 SVM127-A User Manual
Page 135
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ELECTRICAL DIAGRAMS
LN-9
TACHOMETER SCHEMATIC
525
15.0K
R2
1.3K
R4
40V
600mA
Q1
OCI1
2
3
1
4
1/4W
(
UNLESS OTHERWISE SPECIFIED)
1A, 400V
RESISTORS = Ohms (
LN-9 TACHOMETER
LABELS
FRAME CONNECTION
SUPPLY
POWER SUPPLY SOURCE POINT
EQUIP.
TYPE
THE LINCOLN ELECTRIC CO.
S
UNLESS OTHERWISE SPECIFIED)
NONE
19852
MW
3/8/91
SCHEMATIC
19852
THE INTERCHANGEABILITY
WITHOUT AFFECTING
S
EARTH GROUND CONNECTION
CIRCUIT BOARD
COMMON CONNECTION
THIS DIAGRAM MAY NOT
A PRINTED
OF A COMPLETE
N.A.
MAY CHANGE
SINCE COMPONENTS OR CIRCUITRY ON
BOARD.
OR CIRCUITRY OF
NOTES :
CLEVELAND, OHIO U.S.A.
SHOW THE EXACT COMPONENTS
SUBJECT
VOLTAGE NET
CANADA
SCALE
SUP'S'D'G.
DATE
DR.
NO.
MFD
SHT.
(UNLESS OTHERWISE SPECIFIED)
.022/50V
AUSTRALIA
CAPACITORS =
CHK.
Ch'ge.Sht.No.
FRANCE
CONTROLS HAVING A COMMON
CODE NUMBER.
DIODES =
ELECTRICAL SYMBOLS PER E1537
GENERAL INFORMATION
510
555
1.00K
R1
5/15/92N
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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.