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TROUBLESHOOTING AND REPAIR | |||||
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| BUS BOARD TEST (continued) |
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| TABLE F.5 PLUG CN2 TEST POINTS |
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| Wire # |
| Description | Expected Voltage |
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| 21 |
| Thermal Trigger |
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| 22 |
| Output Hall Probe |
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| 23 |
| Hall Probe | +15 VDC |
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| 24 |
| Ground Gate Switch B |
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| 26 |
| Ground Gate Switch A |
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| 27 |
| Thermal Trigger (AC Unit) |
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| 28 |
| Ground Hall Probe |
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| 29 |
| Hall Probe |
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| 30 |
| Gate Switch B |
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| 32 |
| Gate Switch A |
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| TABLE F.6 PLUG CN3 TEST POINTS |
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| Wire # |
| Description | Expected Voltage |
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| 61 |
| - Superimposition | 53.2 VDC(1) |
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| 65 |
| Ground Superimposition |
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| 63 |
| + Superimposition | 53.2 VDC(1) |
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| Welding Voltage | 52.6 VDC |
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(1)In TIG mode only when Remote is pushed, comes on for two sec. then goes to zero. In STICK mode is present all the time.
TABLE F.7 PLUG CN4 TEST POINTS
| Wire # |
| Description | Expected Voltage |
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41 |
| Front Panel Supply | 24 VDC | |
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42 |
| Front Panel Supply Ground | ||
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44 |
| HF Start | ||
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45 |
| Front Panel Supply | 48 VDC | |
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48 |
| HF Start Ground | ||
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| TABLE F.8 PLUG CN7 TEST POINTS | ||
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| Wire # |
| Description | Expected Voltage |
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11 |
| Water Cooling Supply | ||
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| Earth Cable |
| Water Cooling Supply | |
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12 |
| Water Cooling Supply | ||
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| Earth Cable |
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| TABLE F.9 PLUG CN1 TEST POINTS | ||
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| Wire # |
| Description | Expected Voltage |
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| 5[+], |
| Fan | 24 VDC |
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