v) Remove the Cover-Open Assy. Remove 6 screws. And remove the bottom cover.
vi) Check if the sensor and actuator are assembled correctly.
4) Check if there are any obstacles or contamination on the paper path. Remove it.
5) Close the DSDF cover.
6) Open the DSDF unit.
a) Check if the reflection film is contaminated. Clean it.
b) If the problem persists, check the followings.
i) Open the DSDF cover.
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4. Troubleshooting
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