Lincoln Electric SVM152-A service manual SPI Cable Resistance and Voltage Test

Models: SVM152-A

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F-46

F-46

TROUBLESHOOTING AND REPAIR

SPI CABLE RESISTANCE AND VOLTAGE TEST (continued)

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TEST PROCEDURE

1.Remove the input power to the V350-PRO.

2.Using the 5/16” nut driver, remove the case wraparound cover.

3.Perform the Capacitor Discharge Procedure.

4.Using a 5/16” nut driver, remove the control box top. Cut any necessary cable ties.

5.Perform the Display Board Removal Procedure. Do not remove the SPI ribbon cable connecting the display board to the sta- tus board. If a remote board is present, the SPI cable plug connecting the remote board to the display board will have to be removed from the display board.

6.Locate and remove plug J3 from the control board. See Figure F.15.

7.Check the resistance and continuity of the SPI cable by testing with the ohmmeter from each pin on plug J3 to the corresponding pins on the plug removed from the display board. See the machine schematic drawing.

8.The resistance reading pin to corresponding pin should be zero ohms or very low resis- tance. If the resistance reading is high or “open” check the plug connections to the SPI network PC boards. If the connections are OK and the resistance is high or “open” the SPI cable may be faulty.

9.Using the ohmmeter check the continuity of the remote board SPI cable from the plug (pre- viously connected to the display board) to the plug on the remote board.

10.Reconnect the plugs into the display board and perform the Display Board Replacement

Procedure.

11.With plug J3 still removed from the control board, carefully apply the correct input power to V350-PRO.

12.Turn on the machine.

13.Carefully check for the presence of +15VDC from plug J3 pin -1(+) to plug J3 pin -10(-) at the control board receptacle. See Figure F.15.

14.Carefully check for the presence of +5VDC from plug J3 pin -2(+) to plug J3 pin -10(-) at the control board receptacle. See Figure F.15.

15.If either of these voltages are low or not pre- sent, the control board may be faulty. Replace.

16.Remove the input power to the V350-PRO machine.

17.Replace plug J3 into the control board.

18.Replace the control box top and any cable ties previously removed.

19.Replace the case wrap-around cover.

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FIGURE F.15 Plug J3

Pin 1

Pin 2

Plug J3

J3

Pin 10

V350-PRO

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Lincoln Electric SVM152-A service manual SPI Cable Resistance and Voltage Test, Perform the Capacitor Discharge Procedure

SVM152-A specifications

The Lincoln Electric SVM152-A is a cutting-edge semi-automatic wire-feed welding machine designed for professionals seeking high performance and efficiency in their welding tasks. This versatile welding system is known for its robust engineering, advanced technology, and user-friendly features, making it a preferred choice for various applications in metal fabrication, automotive repair, and construction.

One of the standout features of the SVM152-A is its impressive versatility. It can accommodate a wide range of welding processes, including MIG, MAG, and FCAW. This flexibility allows users to switch between different welding techniques with ease, providing the adaptability needed for diverse project requirements. Additionally, the machine supports various wire diameters, catering to different welding applications and materials.

The SVM152-A boasts advanced inverter technology, which enhances its performance by increasing efficiency and reducing power consumption. This technology not only leads to lower operational costs but also provides a stable arc and improved weld quality. The inverter design enables the machine to maintain a consistent output, even in challenging conditions, ensuring a smooth welding experience.

Another key characteristic of the Lincoln Electric SVM152-A is its user-friendly interface. The machine features intuitive controls, making it accessible for both seasoned welders and those new to the craft. The digital display provides clear readings of key parameters, such as voltage and wire feed speed, allowing operators to make quick adjustments for optimal weld quality.

The construction of the SVM152-A is designed for durability and reliability. Made from high-quality materials, it can withstand the rigors of demanding work environments. The machine is also equipped with advanced cooling systems to prevent overheating during prolonged use, ensuring a longer lifespan and consistent performance.

Safety is a top priority in the design of the SVM152-A. The machine comes with built-in safety features, including thermal overload protection and circuit breakers, which help protect the equipment and the operator from potential hazards.

In summary, the Lincoln Electric SVM152-A combines versatility, advanced inverter technology, user-friendly controls, robust construction, and safety features, making it an excellent choice for professionals in various industries. Whether tackling intricate welding projects or high-volume production work, the SVM152-A delivers the performance and reliability that modern welders demand.