13) Loud noise sound of LSU motor
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Symptom : The machine makes some noise like a siren from LSU motor in printing mode.
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Cause : LSU motor defect
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Troubleshooting
1) Enter the service mode and execute the LSU motor test.
2) If the LSU motor run sound is loud, replace the LSU.
3) If not, check the other unit.
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4. Troubleshooting
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