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F-10

TROUBLESHOOTING AND REPAIR

F-10

Observe all Safety Guidelines detailed throughout this manual.

PROBLEMS

 

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

 

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

FUNCTION PROBLEMS (Continued)

 

 

 

 

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Neither encoder control knob functions.

The LN-10 is dead. The displays and LEDs on the keypad are off. The green and red LEDs on the control board are not lit.

The displays and LEDs on the key- pad are off. The green and red LEDs on the control board are both blinking normally at about one sec- ond intervals.

The displays and LEDs on the key- pad are off. The green and/or red LEDs on the control board are blinking at a very fast or erratic rate.

The wire feed is consistent and adjustable, but operates at the wrong speed.

1.Check the wiring and plug con- nections between the encoder boards and the control board. (Plug J2) See the Wiring Diagram.

1.Make sure the LN-10 is con- nected properly to the power source.

2.Make sure 42 VAC is being applied to the LN-10 at the input receptacle terminals A and B.

1.Check the wires and connectors (J11 and J3) between the dis- play board and the control board for loose or faulty connec- tions.

1.Make sure the LN-10 is con- nected properly to the power source.

2.Make sure 42 VAC is being applied to the LN-10 at the input receptacle terminals A and B.

1.Make certain the DIP switch S1 is correctly set for the wire drive and gear ratio. See Wire Drive Head Selection.

1.Perform the Encoder Board Test.

2.The control board may be faulty.

1.The input rectifier bridge may be faulty. Check for 42 VAC at the red leads. Also check for at least 42 VDC at leads #542(+) to #500(-). See the Wiring Diagram.

2.The control board may be faulty.

1.Check leads #512 (1J3) to #500 (3J3) for the presence of 12.8 VDC. If the 12.8 VDC is not present the control board may be faulty.

2.If the 12.8 VDC is present the display board may be faulty.

1.The control board may be defective.

1.The control board may be faulty.

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CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-800-833-9353.

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LN-10

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Lincoln Electric SVM154-A service manual Perform the Encoder Board Test
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SVM154-A specifications

The Lincoln Electric SVM154-A is a powerful and versatile inverter-based welding machine designed for a wide range of applications. As a part of Lincoln Electric's esteemed portfolio, this model is particularly favored for its robust performance and cutting-edge technologies, making it ideal for both professional fabricators and hobbyists alike.

One of the standout features of the SVM154-A is its compact and lightweight design, which enhances portability without compromising power. Weighing significantly less than traditional welding machines, it allows welders to easily transport the equipment to various job sites. This feature is particularly beneficial in industries where mobility is essential.

Equipped with advanced inverter technology, the SVM154-A delivers a stable and smooth arc, providing consistent welding performance even in challenging conditions. The inverter design also contributes to energy efficiency, allowing users to save on operational costs while enjoying superior performance. The machine supports both MIG and TIG welding processes, which adds to its versatility. This adaptability makes it suitable for a range of materials including mild steel, stainless steel, and aluminum.

Another notable characteristic is its user-friendly interface. Designed with the welder in mind, the SVM154-A includes intuitive controls that simplify settings adjustments and operational processes. This ergonomic layout allows for ease of use, even for beginners, while still offering the adjustments that experienced welders appreciate for customizing their welds.

The SVM154-A also includes several safety features, such as thermal overload protection and a dynamic power control, ensuring safe operation while maintaining high productivity. Users benefit from features that protect both the machine and the operator, making it a reliable choice for long hours of work.

Moreover, Lincoln Electric's commitment to durability is evident in the SVM154-A's construction. Built with high-quality materials, this welding machine is designed to withstand the rigors of daily use, ensuring longevity and reliability over time.

In summary, the Lincoln Electric SVM154-A stands out for its portability, versatility, and user-centric design. With advanced inverter technology that promotes energy efficiency and a stability for various welding processes, it serves as a valuable tool for both professionals and hobbyists seeking to achieve high-quality welds across different applications. Its combination of advanced features, safety mechanisms, and rugged durability positions the SVM154-A as a top choice in the welding equipment market.
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