Lincoln Electric SVM138-A service manual Power PC Board Schematic, SHT. no

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

G-6 ELECTRICAL DIAGRAMS G-6

Power PC Board Schematic

POINTSOURCE SUPPLYPOWER

CONNECTIONGROUND EARTH

SCHEMATICBOARD .C.

8871

31

NETSUPPLYVOLTAGE

CONNECTIONCOMMON

FILE:L88713E1CONNECTIONFRAME

L

3

USED.NO LAST

SHT. NO.

7

9

MAYCHANGEBOARDCIRCUITONAPRINTEDORCIRCUITRYCOMPONENTS.A.SINCEN MAYTHISDIAGRAMBOARD,ACOMPLETEOFTHEINTERCHANGEABILITYAFFECTINGWITHOUT

CODECOMMON AHAVING CONTROLSOF CIRCUITRYOR COMPONENTSEXACT THESHOW NOT

R-15

C-20

LABELSD-20(SPECIFIED)=OhmsOTHERWISEUNLESSRESISTORS1/4W

9F-LN AND

7A

4

HOT-COLD

GMA9 -LN

PPOWER

INTERLOCK

SUPÕSÕDÕG.

SWITCH

524A

11

S2A

HOT

524

7

MFDSPECIFIED)=OTHERWISECAPACITORS(.022/50VUNLESS

CLEVELAND,OHIOU.S.A.SUBJECT

.

J2

EQUIPTYPE

COLD

2A

2

3

TWO CONNECTOR PINS AND THE RELAY

SPECIFIED)OTHERWISE=400VDIODES1A,(UNLESS

JJ

HOT

4

CR1

CONTACT ARE LOCATED ON THE P.C. BOARD.

.

CHK

7

J2

2

6

6

.CO ELECTRICLINCOLN THE

504

NONE

93-20 -12

4

5

INFORMATIONGENERAL

E1537PER SYMBOLSELECTRICAL

628

10

.NUMBER

SCALE

DATE

500

12

:NOTES

J2

RT/

32A

7

DR.

529

WELD

J1

CURRENT

32

4

REED

CR2

0.4A

SWITCH

32A

125V

J2

F1

628

532

1

32A

6

9

541B

B532

B32A1

B32A2

CR1

B541B

J1

628

2

4

6

C2

C3

525

628

.047

.047

541

7A

7

100V

100V

GAS

(B)

0.2mH

0.2mH

S7

525

SOLENOID

C1

1

3

+15V

B7A

B7

PT1

PT1

DIRECTION

510

.0047

SWITCH

8

R15

4.75K

94H-21 -1

1400V

D16

96A-2 -8

97B-7 -3

D10

C9

94E-5 -8

REV

FWD

D4

J2

1N4936

ChÕge.Sht.No.

D8

12

13

10

2.21K

D3

X2

R14

J1

3

M

D5

R3

2N6397

16A

526

1.00K

CR1

SCR2

4

D17

24Vdc

11

Q3

1

400V

T1

C18

Q5

500mA

2N6397

B526

J1

8

300V

TP1

2N5655

500

1A

150V

SCR1

C6

22.1K

22.1K

13

X1

14

100V

D11

TOLERANCESPECIFIED OTHERWISEUNLESS

Q1

R10

45J

.15

R8

Q2

VDD

CR1

530

DEGREEA OF5 .+ ISANGLES ALLON

STANDARDSPUBLISHED WITH

26 VAC

200V

2

/Q1

Q1

1

R13

R4

D1315.0K

PERE-2056SIZESHOLESON .O2IS+DECIMALSPLACEON2

OO2.+ ISDECIMALS PLACE3 ON

AGREETO ("t")TOLERANCE MATERIAL

C4

C5

9

C8

3

CLOCK 1

/Q2

12

100

TRIGGER

.0047

1.00K

.0047

C17

BOARD

R5

1400V

4

RESET 1

CLOCK 2

11

1400V

1

2

3

532

527

D9

C15

.15

500

D12

1N4936

5

D1

RESET 2

10

200V

4

(W)

1N4936

D1

4

D2

115VAC

B527

D6

R1

6

SET 1

D2

9

DZ3

10.0

R2

16A

332

7

8

J1

J1

16A

D7

VSS

SET 2

16V

9

13

400V

B539B

D14

J1

400V

DZ1

C14

MC14013B

1W

D19

530A

J1

J2

2

539B

15V

J2

5W

5

S2B

9

CR1

8

601

510

HOT COLD

11

INTERLOCK

540

7

5

C7

ON

SWITCH

524

524A

DZ4

J1

J1

J1

D20

J1

9.6 VAC

150

530B

27V

50V

1N4936

10K

1W

3

531

12

15

R6

DZ2

TRIGGER

14

C11

10V

OFF

INTERLOCK

521

J1

4.7

602

5W

35V

32A

115 VAC

510

Q2

C12

5

.01

531

500

2N5655

PT1

200V

0.2mH

R1

T2

24 VAC

C10

R7

100K

6

621

31

TO CONTROL

J1

RHEOSTAT PLUG

620

1

2

X2

500

10

620

621

3

X2

4

510

622

14

14

530

622

5

X2

6

X1

C20

X2

COMPONENTS IN THE DASHED AREAS ARE NOT ON THE P.C. BOARD UNLESS

L

623

MC14013B

OTHERWISE NOTED.

8871

500

623

9

X2

8

7

7

TRIGGER SWITCH

11

X2

10

500

500

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	LN-9 GMA
in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.