Samsung SL-M4580FX Service Manual page 216

4. Troubleshooting
6) If the same error persists, execute the memory clear.
7) If the same error persists, replace the fuser
8) If the same error persists, replace the main board(JC92–02722A).
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unit(JC91–01177A (220V) / JC91–01176A
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(110V)) with new one.