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| TROUBLESHOOTING AND REPAIR |
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| INTERNAL VOLTAGE TEST (continued) |
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| TABLE F.1 – VOLTAGE TEST POINTS |
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| ACCEPTABLE |
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CHECKPOINT |
| TEST |
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| VOLTAGE |
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| LOCATIONS |
| DESCRIPTION | LEAD NO. |
| READING |
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Input Circuit Breaker |
| Input voltage before the | #31 and #32 |
| 103 to 126VAC |
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| and |
| circuit breaker and 2 |
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| Resistor R4 |
| ohm resistor (R4). |
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Input Circuit Breaker |
| Input voltage after the | #31 and #32A |
| 103 to 126VAC |
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| and |
| circuit breaker. |
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| Resistor R4 |
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Input Circuit Breaker |
| Input voltage after the | #531 and #32A |
| 103 to 126VAC |
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| and |
| circuit breaker and 2 |
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| Resistor R4 |
| ohm resistor (R4). |
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Gun trigger receptacle |
| Check voltage across | #524 (pin A) and |
| 34 to 42VDC |
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| pins A and C |
| gun trigger - | #528 (pin C) |
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| - trigger open. |
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Terminals #7 and #32A |
| Auxiliary terminals | #7 and #32A |
| 103 to 126VAC |
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located on relay board |
| (gas solenoid) |
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| Note: Gun trigger must |
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| be activated. |
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Terminals #626 and |
| Drive motor field | #626 and #627 |
| 102 to 125VDC |
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#627 located on relay |
| voltage. |
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| board |
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Terminals #539 and |
| Drive motor armature | #539 and #541 |
| 4VDC (min) - |
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#541 located on control |
| voltage. |
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| 90VDC (max). |
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| board |
| Note: Gun trigger must |
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| be activated and |
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| armature voltage will |
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| be dependent upon wire |
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| speed setting. |
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| Control board |
| Check that 115VAC is | #32A (pin 12) and |
| 103 to 126VAC |
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connector plug |
| being applied to control | #7 (pin 2) |
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| board when gun trigger |
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| is activated. |
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Relay board connector |
| Check that 115VAC is | #32A (pin 1) and |
| 103 to 126VAC |
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| plug |
| being applied to the | #531 (pin 4) |
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| control board. |
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