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TROUBLESHOOTING & REPAIR
FULL VOLTAGE CALIBRATION(continued)
FIGURE F.55 - TEST AND CALIBRATION OVERLAY
PROCEDURE |
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| 6. With the machine loaded, monitor the refer- | ||||||||
1. The voltage calibration numbers are stored |
| ence voltage only (external voltmeter). It is | |||||||||
| the only important reading. Adjust the volt- | ||||||||||
| in the display board. | They are program- |
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| age using the Arrow Keys (100 and 101) | |||||||||
| mable from the front panel using the Test |
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| until the reference voltmeter reads | 30.0 | ||||||||
| and Calibration Overlay. |
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| volts. Press the Enter Key. |
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2. Change the PC board in question. |
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6a. If using a synergic 7 wire feeder, press | |||||||||||
3. Install the Test and Calibration Overlay | |||||||||||
| enter then adjust to the desired w.f.s Note | ||||||||||
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| the gun will be electrically “hot” at this | |||||||||
| Figure F.55. |
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| time. |
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4. Press the Voltage Calibration function (32). |
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| The machine should display the following: |
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| CAUTION |
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| VOLTAGE WIRE | WHEN LOADING THE MACHINE WITH THE | |||||||
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| + POLARITY (+67A) | ||||||||
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| CASE PARTS REMOVED, BE CAREFUL NOT | |||||
5. Press the Enter Key (133) on the lower right | TO OVERHEAT THE MACHINE. |
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7. Repeat the process by pressing the Voltage | |||||||||||
| side of the overlay. The machine should | ||||||||||
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| Calibration function again. The next volt- | |||||||||
| display the following: |
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| age sensing point (lead) may be selected by | |||||||
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| ADJUST TO 30V |
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| pressing the down Arrow Key (101). | The | ||||||
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| CALIBRATION #=XX |
| above procedure must be repeated six | ||||||
NOTE: Here “XX” indicates a particular cali- |
| times to set the six sensing points (leads) to | |||||||||
| 30.0 volts. The six test points (leads) are | ||||||||||
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| bration number | for a given voltage |
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| the following: |
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| sensing point. |
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| + Polarity (+67A) |
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| WARNING |
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| + Polarity (+67B) |
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| - Polarity (+21A) |
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The machine’s output terminals will be electri- | - Polarity (+21B) | |||
+ Polarity | ||||
cally “HOT” when the Enter Key is pressed. | ||||
- Polarity | ||||
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| 8. If the display board is replaced or dis- | |
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| turbed, perform the Sensor Calibration | |
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| Test. | |
| POWER WAVE 450 | |||
