Samsung CLX-9201 Service Manual page 360

4. Troubleshooting
► Error Code
S3–3121
► Error message
Scanner is locked.
► Symptom
Scanner module does not move.
► Troubleshooting method
1) Turn off the machine then on. Check if the scanner module works normally.
2) If the initial operation does not occurred normally, turn the machine off.
3) Remove the scan glass.
(Refer to 3.3.29.2. Scan glass)
4) Check if the home position sensor cable is connected correctly.
5) Remove the scan rear cover. Check if all cables on scan joint board are connected correctly.
6) If the connection is OK, replace the scan joint board(JC92-02447A).
(Refer to 3.3.29.1. Scanner joint board)
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