Samsung CLX-8540ND Service Manual page 370

Troubleshooting
● Code : T-3 ● Insufficient Toner Fixing
● Symptom :
-. Insufficient Toner Fixing on Printed Image
● Possible Cause:
1. Fuser unit defect
2. Fuser temperature detection error.
● Troubleshooting method :
1. Replace the fuser unit.
2. If the problem persists, replace the engine board.
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