Lincoln Electric SVM112-B service manual Section TOC

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G-10	ELECTRICAL DIAGRAMS	G-10
SCHEMATIC - DISPLAY PC BOARD (SHEET 2)

2-9232 G +15V

to

to

100	419
	R
	100
+15V	R195
DZ24	C97	6	200

2

J11

+5V +5V

+5V

+5V

+5V

	15V	0.1	19R
10K	1W	50V
	1

THERMAL FAN

150 52

4 150

05 150

104 150

150

0

		20R							R197
J11		1.00K				THERMAL	GA
	5	R203							100
	DZ26		C99	R205	10K			R206
			0.1						75.0
	5.1V
J11	1W	681	50V

4

J11

1R

3

1

OCI17

OPTEK OPB706

15R

3

1

OCI18

OPTEK OPB706

1R

3

	R
1	3	1
OCI10		OCI12
OPTEK OPB706		OPTEK OPB706

R 11

3

1

OCI11

OPTEK OPB706

6		R204					Q29
	R202	FAN						DZ25
10.0		GD	R198				600mA
							40V	15V
			681					1W
			C98	99R1	K1.22	R200
	GA		330p				75.0	GA
			100V
							GD
	+15V
		4	+15V

INFRA4

R176

6.81K

22.1K

R 751

4

Q22

600mA

40V

C88

GD

2

SENSE

INFRA5 R182 6.81K

22.1K

1R 47

4

Q23

600mA

40V

C89

GD

2

SENSE

INFRA6 R177 6.81K

22.1K

1R 87

4

Q24

600mA

40V

C90

GD

2			4	2
SENSE				SENSE
			Q13
INFRA7	R179		600mA	INFRA8	R103
			40V
	6.81K				6.81K
		081R				102R
	22.1K				22.1K
		C91

GD

NOTE: 8 MULTIPLEXED SIGNALS (UNDER SOFTWARE CONTROL) ARE SAMPLED AT THIS NODE

SENSE

(9)

4

Q9

600mA

40V

C68

GD

2

SENSE

+5V

+5V

+5V

6

47.5K

16

133K

57 10.0K

R46

	1.50K	R207			5
			1.00K
J11				PRESSURE J16	+ t	56	C95
	7		R208
							0.1

1

J11

DZ27	C100			50V
	0.1	11	10K
5.1V
	50V

WATER COOLER

J11	1W	681	2R
	8	R210	12

3

J11

	150
501R
3

1

150

1R 15

3

1

	150
153R

31

15R

R 591

1.50K

1R

1R 72

3.32K

			R
TRIM1				TRIM2			9
							13R
			713	33.2K
			R
142		6.81K		313		6.81K
	R				R

			1R
TRIM3
33.2K
			831	6.81K
			R
361		6.81K
	R

TRIM4

1R 14

6.81K

		R209	J16
10.0			GD
								Q28
									DZ23
		GA	WATER	R190				600mA
									15V
				475				40V	1W
				C96	19R1	K122.	192R	75.0	GA
				330p
	+15V			100V
								GD
10K	2
	1R2	1.00K
J10
		R213	FLAG
15
		DZ28	C101

INFRA1 R121 6.81K

22.1K

122R

	OCI14
	OPTEK OPB706
4	2
	SENSE
Q26
600mA	INFRA2	R183
40V
		6.81K
C94		22.1K

GD

1R 48

OCI15

OPTEK OPB706

42

SENSE

Q25

600mA	INFRA3	R185
40V		6.81K
C93		22.1K

GD

1R 18

	OCI16
	OPTEK OPB706
4	2

SENSE

Q27

600mA

40V

C92

GD

Q17

2N4401

C77

+15V

	Q20			Q18
	2N4401			2N4401
140	22.1K	C75	612	22.1K
R			R

GD

			Q19
			2N4401
C78	431	22.1K	C79
	R

J14

6

R 513

22.1K

	5.1V	0.1
	1W	50V
		GD
J10			+15V		REFERENCE CIRCUIT
16											+5V
											4.75K
	+10V	Q21			2	475	1			3	R160
						R155			X2
		2N4401						1
J10
14										2
J10
		10.0			1.00K
3			0	4
J10		L3	13R	2R1
4
J10		R145

681

+5V +5V

TRN

R111	2N4403
1.3K	Q14
	10K
	311R

1R 21

	K23
231
R	.3

200

213R	K00. 1	101R 1.00K
	Q12
	600mA
	40V
	1	NC	VCC	8
	2	ANODE	VB	7
	3	CATH	VC	6
	4	NC	GND 5
		OCI13

D20

100K

		50V
		C69
		2700p
108R		R107
		750
	Q11	500mA
		300V
		C62
	10K	820p
R86		50V

109	26.7
R

Q10

500mA

300V

	100K
106R

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R129

10	.39mH	C76
+ t 56			33.2K
		0.1
		50V

J13	R83
2

R227	DZ8
1.00K	R74
R228

221

TEE SR

+10V					1.00K				DZ15
									15V	100K	47.5K
					131R		82R1	10.0	1W	125R	671R
R238	100K
									GA
R239	100K
J10
12
J10	R148				10			475		475
6						8
	100K				X2			R149		R143	SPTIG
	C81	461R	100K	DZ17	9
	0.1			10V					C80	DZ16	C82
+10V
	50V			1W	R147				0.1	5.1V	0.1
									50V	1W	50V
					1.00K
225	100K		GA		6 - PIN					GD
R

REMOTE

PO10K ENT MTIO

ER OM ET

OT

	R226	100K
J10	11
J10	8	R165
		100K
	+10V
	44	100K
	R
	R45	100K
J10	2
J10	5	R166
		100K
J10	1
J10	7
J10	9
		R170
J10
	13
		+ t 56

C85

0.1168 100K

50V R

	GA
C86
0.1	2
50V	17R	100K

GA

L4

.39mH

	12
		X2	14
DZ20	13
10V
1W
		R169
		1.00K

14 - PIN REMOTE

	5
		X2		7
	6
DZ18
10V
1W			R164
			1.00K
		14 - PIN
		REMOTE

R163 R173

475	475
C83	DZ19

0.15.1V

50V 1W

GD

R162 R171

475	475
C84	DZ21

0.15.1V

50V1W

GD

SPWF2

C67

0.1

50V

SPWF1

C87

0.1

50V

1 4.75K

+ t 56

D4		D23	3.3V	475
DZ10	3.32K		1W
20V	R229
5W	3.32K
D6	R230		10K

8R

TRIG2

15

R79

J14

5

4

J13

		3.32K	R77	C61	D3
		R231		20
	DZ9	3.32K		50V
D7	20V	R232
	5W	3.32K

R234

D5

OCI2

CNY17-3

2 6 4

	1K22
R80

J14

Q7

4

1

J13

24VAC ISOLATED TRIGGER CIRCUIT

600mA

40V

3

J13

681

R214

DZ14

10K R78

+5V

GD

+5V

J12 R94

1.00K

0

2

R215

R93

10	4.75K
R

221

+ t 56

D19 D24

3.3V

475

R95

4

J12

	DZ13	3.32K
	20V	R216
	5W	3.32K
D17		R217	10K
		3.32K
			R99
		R218
	DZ12	3.32K
D18	20V	R219
	5W	3.32K

R220

D16

1W

C66	D15
20
50V

TRIG1

15

OCI4

CNY17

2 6 4

R97 K212

J14

J14

Q8

600mA

1

2

1

J12

24VAC ISOLATED TRIGGER CIRCUIT

10K

40V

J12

3

R98

GD

GD

+5V

	5.11K
8
1

100K

C72

150p

50V

R87

3.32K

1N4936

DZ11D10

5.1VC65

1W0.1

50V

+15V

2K R89 D22

TP1

150V

45J

C74

.0047

400V

1R

REC

Q16

600mA

40V

3.32K

R 012

R117 2.67K

C71

150p

50V

D11

R116

10K

C73	9	4.75K
150p	11R
50V

D12

D14

R85

	K57 .4
R84

221K

R90

8	VCC	NC
7	VB	ANODE
6	VC	CATH
5	GND	NC

OCI3

C64

150p

50V

1

2

3

4

D8 150

R88

D9

D13

C63

330p

100V

J14

WIRE FEEDER COMM.

GD

3

	GENERAL INFORMATION						LAST NO. USED
	ELECTRICAL SYMBOLS PER E1537						R- _	D- _	R- _
	CAPACITORS =		MFD ( .022/50V		UNLESS OTHERWISE SPECIFIED)		C- _	C- _	C- _
	RESISTORS = Ohms (			1/4W UNLESS OTHERWISE SPECIFIED)			LABELS D- _	D- _	D- _
NOTES :	DIODES =	1A, 400V		(UNLESS OTHERWISE SPECIFIED)			SUPPLY VOLTAGE NET
N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE							POWER SUPPLY SOURCE POINT
WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY							COMMON CONNECTION
NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE	FILE NAME:		G2239_1DA
NUMBER.							FRAME CONNECTION
				SHEET 2 OF 2			EARTH GROUND CONNECTION
Ch’ge.Sht.No.	THE LINCOLN ELECTRIC CO.					EQUIP.	INVERTEC V400
1-6-95B						TYPE
	CLEVELAND, OHIO U.S.A.					SUBJECT DISPLAY/KEYPAD PCB SCHEMATIC
12-8-95E
		SCALE		NONE				NO.SHT. G 2239-2
DR.	DB	DATE		1-17-94	CHK.	SUP’S’D’G.

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

POWER WAVE 450