Samsung MultiXpress M537x series Service Manual page 312

4. Troubleshooting
► Error Code
S7–2110
► Error message
Fuser Failure: #S7-2110. Turn off then on
► Symptom
Abnormal heater control has been detected by the Main Board. Therefore, the Main Board has turned Main Relay "Off".
► Troubleshooting method
1) Turn the machine off. Re-install the fuser unit, then turn the machine on.
2) If the problem persists, turn the machine off.
3) Replace the fuser drive board.
4) If the problem persists, replace the main board.
4-176 Copyright© 1995-2013 SAMSUNG. All rights reserved.