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TROUBLESHOOTING & REPAIR
OUTPUT FILTER BOARD
REMOVAL AND REPLACEMENT (continued)
FIGURE F.33 CASE FRONT SCREW REMOVAL
Phillips Head Screws
WARNING |
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| STICK |
| LOCAL |
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| DC TIG |
| REMOTE |
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MODE | AC TIG | TRIGGER |
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| WELD | PULSE FREQUENCY |
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| CURRENT | Hz |
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UPSLOPE |
| % ON TIME | DOWNSLOPE |
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sec |
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| A |
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| POSTFLOW | OUTPUT |
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| sec |
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| BACKGROUND |
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| CURRENT |
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| FINISH |
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| CURRENT |
| PARAMETER |
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| SELECT / HOLD |
V |
| PULSE ON |
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| AC FREQUENCY Hz |
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| AC BALANCE % EN |
| ® |
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Casefront
Mounting
Screws
Phillips Head Screws
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9.Using a 17mm wrench, remove the heavy lead from the positive output terminal.
10.Using a 13mm wrench, remove the heavy lead from the high frequency transformer.
11.Disconnect plugs CN1 and CN2 from the out- put filter board. See Figure F.34.
12.Using a 90o phillips head screwdriver, remove the output filter board mounting screws.
NOTE: The output terminal assembly may have to be removed to gain access to the out- put filter board mounting screws.
13.Remove the large nut holding the output filter board to the positive terminal. See Figure
F.34.
14.Disconnect plug CN7 from the control/display board assembly. See Control/Display Board Removal Procedure for plug CN7 location.
15.Carefully remove the output filter board by sliding it by the the plug and lead assembly.
16.Replace the output filter board.
17.Maneuver the new board into its proper loca- tion from which it was previously removed.