Samsung MULTIXPRESS CLX-9251 Series Service Manual page 351

► Error Code
S1–2111
► Error message
Video System Failure #S1-2111: Turn off then on.
► Symptom
The machine can't detect memory during booting.
► Troubleshooting method
1) Turn the machine off then on.
2) If the problem persistss, turn the machine off again.
3) Remove the rear cover.
(Refer to 3.3.2 Rear Cover)
4) Replace the main board(JC92–02429A).
(Refer to 3.3.7 Main Board)
NOTE
Insert the MSOK to the new main board.
5) Assemble the rear cover. Turn the machine on.
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4. Troubleshooting
4-166