Samsung CLX-8640 series Service Manual page 396

4. Troubleshooting
► Error Code
S8–1111
► Error message
HVPS Failure: #S8-1111. Turn off then on.
► Symptom
24V power for HVPS board1 is less than 1.6V.
► Troubleshooting method
1) Turn the machine off.
2) Remove the left cover.
(Refer to 3.3.1 Left Cover)
3) Replace the HVPS board1(JC44-00220A).
(Refer to 3.3.3.1 HVPS board1)
4) Assemble the left cover. Turn the machine on.
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