Samsung CLX-8640 series Service Manual page 393

► 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.
(Refer to 3.3.2 Rear Cover)
4) Replace the SMPS
(Refer to 3.3.8 SMPS board)
5) Assemble the rear cover. Turn the machine on.
Copyright© 1995-2013 SAMSUNG. All rights reserved.
board(110V: JC44-00149B, 220V: JC44-00150B)
4. Troubleshooting
4-234