TroubleshootingPhaser 6121MFP Multifunction PrinterUser Guide1872-Sided Printing ProblemsIf you have problems when copying or printing on two sides of a sheet, then the media you are using orthe settings you are using are probably not correct.• Make sure that you are using approved media. Only plain paper in either Letter or A4 size can beused in the duplex unit.• Do not do 2-sided printing on envelopes, labels, postcards, thin or think card stock, letterhead, or onplain paper with a size other than Letter or A4.• Make sure you have not mixed media types in the tray.• In the printer driver Layout tab, under Print on Both Sides, choose Short Edge Binding (flipped ason a clipboard) or Long Edge Binding (flipped as in a loose-leaf notebook).• For 2-up on 2-sided pages, choose Collate only in the printer driver’s Basic tab. Do not set collationin the application.• Make sure the duplex speed setting is appropriate to your situation. See Changing the DuplexingSpeed on page 187.Changing the Duplexing SpeedIf you are having problems with image transfer during 2-sided printing or copying, you can change theduplexing speed.To change the duplexing speed:1. On the printer control panel, press the Back/Menu button to enter the System Menu, then pressthe Down Arrow button to go to General Setup. Press the OK button.Some areas of the scannedimage are missing.Acrobat 8 (Macintosh version) isused for scanning the image.With the Acrobat Scan setting, turnoff the OCR and Filtering functions.The paper is wrinkled. The paper is moist from humidity orspilled water.Remove the moist paper andreplace it with new, dry paper.The media feed roller or fuser unit isdefective.Inspect them for damage. Ifnecessary, contact TechnicalSupport.You are using unsupported media(wrong size, thickness, type, etc.).Use Xerox-approved media only.See Supported Paper and Media onpage 52.Data was sent to the printer butit does not print.An error message is displayed in thecontrol panel menu.Handle according to the messagedisplayed.It takes a very long time totransfer scan data to the USBflash drive.The response time may be slowdepending on the USB memorydevice that is used.Wait until the transfer is finished.You cannot enter Scan mode orFax mode.An error has occurred in Copy mode. Correct the cause of the error andthen select a different mode.Symptom Cause Solution
