Lincoln Electric SP-250 service manual Main Transformer Test Test Procedure

Models: SP-250

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F-15

TROUBLESHOOTING & REPAIR

F-15

 

 

MAIN TRANSFORMER TEST

TEST PROCEDURE

WARNING

The ON/OFF POWER SWITCH will be "hot" during these tests.

__________________________

NOTE: Secondary voltages will vary pro- portionably with the primary input volt- age.

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

2.Remove the Case Top and Side Panels with a 5/16" nut driver.

3.Locate Plug J3 and Plug J6 on the G2252 Control PC Board or Plug J3 on the G1992 (Code 9402 only) Control PC Board. See Figures F.1A and F.1B.

NOTE: The location of Plugs may vary depending on the machine code.

 

 

SP-250 CONTROL

 

 

 

G2252

 

J2

 

 

 

 

 

 

 

J8

 

J7

 

 

 

 

 

J4

 

 

J3

 

 

 

 

 

#206

J9

 

 

 

#203

#204A

#202

 

(4J6)

 

(3J3)

(2J3)

(1J3)

 

 

 

#209

 

 

 

J5

(7J6)

 

 

 

J6

 

 

 

 

 

 

 

#208

 

 

 

 

(16J6)

 

 

 

 

FIGURE F.1A - G2252 Control PC Board Main Transformer Test Points.

IDEALARC SP-250

Page 62
Image 62
Lincoln Electric SP-250 service manual Main Transformer Test Test Procedure