Samsung MultiXpress K4 Series Service Manual page 473

6) How to resolve NO Power Problem
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Symptom : After turning the machine on, it can not turn on. And OPE lamp is not on.
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Cause :
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The main board harness is not connected correctly.
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Troubleshooting
1) Unplug all the harness from the main board. Then reconnect them.
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4. Troubleshooting
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