Samsung MultiXpress M537x series Service Manual page 221

► Error Code
A3–2113
► Error message
The CTD sensor is dirty. Please clean it with soft cloth or paper.
► Symptom
CTD sensor is defective or CTD sensor calibration is abnormal.
► Troubleshooting method
1) Turn the machine off.
2) Open the side cover.
3) Check if the CTD sensor window is contaminated. If yes, clean the window with soft cloth.
4) Close the side cover.
5) Turn the machine on.
6) If the problem persists, replace the CTD sensor (JC32-00014A).
(Refer to 3.3.11.3. CTD sensor.)
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4. Troubleshooting
4-85