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TROUBLESHOOTING & REPAIR
CONTROL BOARD REMOVAL AND REPLACEMENT (continued)
FIGURE F.16 - CONTROL BOARD LOCATION
Control Board
| A | AMPS |
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| V | VOLTS |
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| A |
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LINCOLN IC |
| OUTPUT |
| WELD |
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ELECTR |
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| TERMIN | ALS | ||
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| INVERTEC |
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| SE | LECT |
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PROCEDURE
1.Remove input power to the
2.Using a 5/16” nut driver remove the case wrap- around cover.
3.Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section.
4.Locate the control board behind the front panel of the machine. See Figure F.16.
5.Using a 5/16” nut driver remove the four screws from the top and bottom of the front of the machine. See Figure F.17.
6.Using a phillips head screwdriver remove the six
screws and their washers from around the input power switch. See Figure F.17.
7.Using a phillips head screwdriver remove the four screws from around the two welder output termi- nals on the front of the machine. See Figure F.17.
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FIGURE F.17 CASE FRONT SCREW REMOVAL
5/16" Screws
AMPS |
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| V OLTS |
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CONTROL |
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| WELD TERMINALS | |
REMOTE |
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LOCAL |
| OUTPUT | ON | |
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SELECT |
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| SELECT |
m WELD MODE | HOT START | ARC CONTROL | ||
| 5 |
| 0 +2 | |
4 | 6 | |||
3 | 7 | +4 | ||
TIG GTAW | 2 | 8 | +6 | |
1 |
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SELECT | 9 | +8 | ||
0 | 10 | +10 | ||
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| SOFT | CRISP |
Welder Output | ONOFFOFF | OFF | Input Power |
Terminal Screws |
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OFF |
| Switch Screws |
5/16" Screws
