Lincoln Electric SVM160-B Chopper Board Test, Test Procedure, Resistance Test, 437+1J99 431-4J99

Models: SVM160-B

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TOC

F-17

F-17

TROUBLESHOOTING & REPAIR

CHOPPER BOARD TEST (continued)

TEST PROCEDURE

1.Disconnect the main AC input power to the machine.

2.Remove the case side panels with a 3/8 in. nutdriv- er.

3.Locate plug J99. (Later machine do not have J99).

4.Make the following voltage test. From the table below.

5.Turn the machine off between each test:

a.Carefully insert the meter probes into the back of each Molex plug cavity.

FROM

TO

EXPECTED

LEAD

LEAD

VOLTAGE

437+(1J99)

431-(4J99)

20VDC

 

 

 

If 20 VDC is not present check Digital Power Supply. See the Wiring Diagram.

RESISTANCE TEST

1.Perform the Capacitor Discharge Procedure.

2.Remove input power to the machine.

3.Perform the resistance tests in Table F.1.

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TABLE F.1– CHOPPER BOARD RESISTANCE TEST TABLE

Test Point

Test Point

Expected Reading

B5(+)

B6(-)

6 K ohms - 9K ohms

B6(+)

B5(-)

6 K ohms - 9K ohms

B4(+)

B5(-)

200 K ohms or Higher

B5(+)

B4(-)

400 K ohms or Higher

B4(+)

B6(-)

200 K ohms or Higher

B6(+)

B4(-)

400 K ohms or Higher

B2(+)

B3(-)

6 K ohms - 9K ohms

B3(+)

B2(-)

6 K ohms - 9K ohms

B4(+)

B2(-)

200 K ohms or Higher

B2(+)

B4(-)

400 K ohms or Higher

B4(+)

B3(-)

200 K ohms or Higher

B3(+)

B4(-)

400 K ohms or Higher

FIGURE F.3 – CHOPPER BOARD CONNECTIONS

300 CHOPPER

TOC

_ B1

C11 + B1

B2

_

B2

C10 +

C3

C2

C1 +

C4

C12 +

B4

B4 + C8

_

B5

B5

+ C9

Section

Master

B3

B6

_

Return to

Return to

B3 B6

J99

POWER MIG 300

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Lincoln Electric SVM160-B service manual Chopper Board Test, Test Procedure, Resistance Test, 437+1J99 431-4J99

SVM160-B specifications

The Lincoln Electric SVM160-B is a standout model in the realm of portable arc welders, designed specifically for light to medium-duty welding tasks. As part of Lincoln Electric’s renowned line of welding equipment, the SVM160-B combines efficiency with durability, catering to both professional welders and hobbyists alike.

One of the primary features of the SVM160-B is its lightweight and compact design. Weighing in at just around 60 pounds, it offers excellent portability, allowing users to easily transport the unit to various job sites. This mobility is enhanced by an integrated handle and a rugged construction, making it suitable for both indoor and outdoor applications.

The SVM160-B utilizes advanced inverter technology, which significantly enhances its performance capabilities. This technology not only contributes to the welder's energy efficiency but also allows for a more stable arc, reducing spatter and resulting in cleaner welds. The machine can operate on both 120V and 240V power sources, providing flexibility for users to adapt to different settings and requirements.

Among its key characteristics, the SVM160-B features a welding output range that accommodates various welding needs, allowing users to achieve welds from 20 to 160 amps. This versatility makes it ideal for welding different materials, including mild steel, stainless steel, and aluminum. Furthermore, the unit supports a range of welding processes, including MIG, stick, and TIG welding, enhancing its adaptability for various projects.

Another highlight of the SVM160-B is its user-friendly interface. The control panel is designed to facilitate ease of use, with clearly marked dials and indicators that enable quick adjustments of settings. This intuitive design ensures that both novice and experienced users can operate the machine efficiently and effectively.

Safety features are also a crucial aspect of the SVM160-B. It comes equipped with thermal overload protection, which prevents the unit from overheating during extended use. This built-in safeguard extends the welder's lifespan and enhances user safety.

In summary, the Lincoln Electric SVM160-B is a versatile, portable welder that combines advanced technology with user-friendly features, making it an excellent choice for a wide range of welding applications. Its lightweight design, inverter technology, and robust safety features make it a reliable option for both professionals and enthusiasts. Whether tackling small repairs or larger projects, the SVM160-B stands ready to deliver quality results.