| TROUBLESHOOTING |
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| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
Machine output doesn’t stay on. | 1. Cooling air blocked or limited. | |
(Amber Thermal light on, fan run- | 2. Faulty output lead thermostat, | |
ning, digital Output display never |
| SCR heat sink thermostat or |
reads greater than 100) |
| connecting leads. |
| 3. | Ambient cooling air too hot. |
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Machine output doesn’t stay on. | 1. Faulty cooling fan or wiring. | |
(Amber Thermal light on, fan not | 2. Faulty wiring in shunt circuit. | |
running, digital Output display |
| (Digital Output display reads |
never reads over 100) |
| near zero.) |
| 3. | Faulty Control board. |
| 4. | 115 Vac winding on main trans- |
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| former not providing voltage. |
| 5. | Fan circuit breaker on front con- |
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| trol panel is tripped. |
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Machine will not shut off. | 1. Input contactor (CR1) contacts | |
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| are frozen. |
| 2. | Defective POWER switch (S1). |
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If all recommended possible areas of misadjustment have been checked and the problem persists,
Contact your local Lincoln Authorized Field Service Facility.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
