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F-9

TROUBLESHOOTING AND REPAIR

F-9

Observe all Safety Guidelines detailed throughout this manual.

PROBLEMS

POSSIBLE AREAS OF

 

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENT(S)

 

COURSE OF ACTION

 

 

 

FUNCTION PROBLEMS (Continued)

 

 

 

 

The “Timer” or "Control” button

1.

Make certain the DIP switches

1. Perform the Keypad Resis-

does not function correctly.

 

on the control board are not set

tance Test.

 

 

for the security mode. DIP

 

 

 

switch S2 position 3 must be in

2. The display board may be

 

 

the OFF position. See Security

faulty.

 

 

Mode Selection.

 

 

 

 

 

 

 

 

3. The control board may be

 

2.

Check the connectors and wires

faulty.

 

 

between the display board and

 

 

 

the control board for loose or

 

 

 

faulty connections. (J11 and J3)

 

 

3.

Check

the

connector

J10

 

 

 

between the keypad and the

 

 

 

display

board for loose

 

 

 

connections.

 

 

 

 

 

 

Pressing the trigger key has no

1. Make certain the DIP switches on

1. Perform the Keypad Resis-

effect while not welding.

 

the control board are not set for

tance Test.

 

 

the security mode. DIP switch S2

 

 

 

position 3 must be in the OFF

 

 

 

position. See Security Mode

2. The display board may be

 

 

Selection.

 

 

faulty.

 

2. Check the connectors and wires

3. The control board may be

 

 

between the display board and

faulty.

 

 

the control board for loose or

 

 

 

faulty connections. (J11 and J3)

 

 

3. Check

the

connector

J10

 

 

 

between the Keypad and the dis-

 

 

 

play board for loose connections.

 

 

 

 

 

One of the encoder control knobs

1.

The unit maybe in a mode that

1. Perform the Encoder Board

 

utilizes only one display. To

functions but the other one does

 

Test.

 

check if this is the problem,

not.

 

 

 

make sure that both knobs

 

 

 

2. The control board may be

 

 

change the display when both

 

 

faulty.

 

 

displays are showing a number.

 

 

 

 

2.

Check the wiring and plug con-

 

 

 

nections between the encoder

 

 

 

boards and the control board.

 

 

 

(Plug J2) See the Wiring

 

 

 

Diagram.

 

 

 

 

 

 

 

 

 

 

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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Lincoln Electric SVM154-A service manual Mode Selection

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.

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