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F-22

F-22

TROUBLESHOOTING & REPAIR

OUTPUT POWER BOARD RESISTANCE TEST (continued)

TABLE F.4 - OUTPUT POWER BOARD RESISTANCE

 

CIRCUIT OR

 

 

TEST POINTS

COMPONENT(S)

EXPECTED RESISTANCE

 

BEING TESTED

 

 

 

 

 

+Probe J33-Pin4

Diode A1

Less than

to

and

100 ohms

–Probe Terminal X2

associated trace

 

 

+Probe Terminal X2

Diode A1

Greater than

to

and

1000 ohms

–Probe J33-Pin4

associated trace

 

 

 

 

 

 

+Probe J33-Pin4

Diode A1

Less than

to

and

100 ohms

–Probe Terminal X4

associated trace

 

 

+Probe Terminal X4

Diode A1

Greater than

to

and

1000 ohms

–Probe J33-Pin4

associated trace

 

 

 

 

 

 

+Probe D29 Test Point

Diode A2

Less than

to

and

100 ohms

–Probe Terminal X20

associated trace

 

 

+Probe Terminal X20

Diode A2

Greater than

to

and

1000 ohms

–Probe D29 Test Point

associated trace

 

 

 

 

 

 

+Probe D29 Test Point

Diode A2

Less than

to

and

100 ohms

-Probe Terminal X40

associated trace

 

 

+Probe Terminal X40

Diode A2

Greater than

to

and

1000 ohms

–Probe D29 Test Point

associated trace

 

 

 

 

 

+Probe D29 Test Point

Transistor A2

Less than

to

and

100 ohms

–Probe J32-Pin14

associated trace

 

 

+Probe J32-Pin14

Transistor A2

Greater than

to

and

1000 ohms

–Probe D29 Test Point

associated trace

 

 

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6.If any of the resistance checks are not correct, the output power board is faulty. Replace. See the

Output Power Board Removal and Replacement Procedure.

7.If the output power board “passes” the resistance test, the power diode and transistor portion of the board is good. However, other circuits on the power board may be faulty. These circuits are NOT readily tested or serviceable.

8.Carefully reconnect the leads and plugs previously removed. Torque X2, X4, and B21 to 75 IN. LBS.

PRO-CUT 80

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Lincoln Electric SVM146-A service manual Output Power Board Removal and Replacement Procedure
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SVM146-A specifications

Lincoln Electric's SVM146-A is a versatile and powerful multi-process welding machine designed for professionals in various industries. Known for its robustness and reliability, this machine excels in both performance and user-friendly features, making it a popular choice among welders.

One of the standout features of the SVM146-A is its multi-process capability, allowing users to perform MIG, TIG, and stick welding using a single unit. This versatility is enhanced by Lincoln Electric's innovative Auto-Set technology, which automatically adjusts the machine's settings based on the selected process and materials being welded. This feature significantly reduces the time spent on setup and helps ensure optimal weld quality, even for less experienced operators.

The SVM146-A is powered by a reliable inverter design, which provides greater efficiency compared to traditional transformer-based machines. This compact and lightweight design allows for easy transport, making it ideal for job sites or remote locations. The inverter technology also contributes to enhanced arc stability and better overall performance, providing high-quality welds in less time.

Another key characteristic of this welding machine is its robust construction, designed to withstand the rigors of heavy industrial use. The SVM146-A features a durable chassis and control panel, ensuring longevity and reliability under challenging working conditions. Additionally, its intuitive interface allows users to easily navigate settings and make adjustments as needed.

Safety is a paramount concern in welding applications, and the SVM146-A is equipped with several safety features, including over-temperature and over-voltage protection, ensuring that the machine operates safely even in demanding environments. It also features a start inhibit system, preventing the machine from being started under unsafe conditions.

The SVM146-A is compatible with a variety of welding accessories and consumables, enhancing its flexibility and usability across different applications. Whether it’s automotive repair, heavy fabrication, or maintenance work, this welding machine adapts to various tasks, making it a valuable addition to any professional's toolkit.

In conclusion, Lincoln Electric's SVM146-A stands out as a multi-process welding machine that combines advanced technology, robust design, and user-friendly features. It is engineered for performance and reliability, making it an excellent investment for professionals dedicated to achieving high-quality welds.
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