Samsung MultiXpress X4 Series Service Manual page 472

4. Troubleshooting
► Error Code
S7–1110
► Error message
Engine System Failure: #S7-1110. Turn off then on
► Symptom
24V power is abnormal.
► Troubleshooting method
1) Check the 24V pin on SMPS board. If it is abnormal, replace the SMPS board.
2) Check the related cable.
3) If the SMPS is normal, replace the main board.
► Error Code
S7–1210
► Error message
Engine System Failure: #S7-1110. Turn off then on
► Symptom
5V power is abnormal.
► Troubleshooting method
1) Check the 5V pin on SMPS board. If it is abnormal, replace the SMPS board.
2) Check the related cable.
3) If the SMPS is normal, replace the main board.
► Error Code
S7–2110
► Error message
Fuser Failure: #S7-2110. Turn off then on
► Symptom
Heater control relay is abnormal.
► Troubleshooting method
1) Turn the machine off. Re-install the fuser unit, then turn the machine on.
2) If the problem persists, replace the Fuser
(Refer to 3.2.2.5 Fuser unit)
4-222
unit(JC91-01209A(220V) / JC91–01210A
Copyright© 1995-2017 SAMSUNG. All rights reserved.
(110V)).