Samsung MultiXpress M537x series Service Manual page 310

4. Troubleshooting
► Error Code
S7–1110
► Error message
Failure: #S7-1110. Turn off then on
► Symptom
24V power for main board is less than 1.5V.
► Troubleshooting method
1) Turn the machine off.
2) Unplug the power cable.
3) Remove the rear cover.
4) Replace the SMPS board.
5) Assemble the rear cover. Turn the machine on.
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