- 141 -9. TroubleshootingDo not close the scanner unit vigorously. It may cause the document feed roller of ADF to fall and get in the wayof loading documents.If the document feed roller of ADF has fallen, open and close the ADF cover.1If documents are set in the ADF or on the document glass, remove them.2If paper is loaded on the MP tray, remove the paper.If the Error Code is "390"