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DUPLEX MODULE3-4Troubleshooting (concerning the duplex module)Check the list below before calling for service.Problem Check Solution or causeThe machine will notprint duplex prints.Message indicating the paper typecannot be used for two-sided printingdisplayed?Special paper cannot be used for two-sidedprinting. Use a paper type adequate fortwo-sided printing. (See pages 2-4 and 3-2.)Message indicating the paper sizecannot be used for two-sided printingdisplayed?Use a paper size adequate for two-sidedprinting. (See pages 2-4 and 3-2.)Bypass tray extension not extended?When using 11 " x 17" , 8-1/2" x 14 ", 8-1/2 "x 13 ",A3 or B4 paper, the bypass tray extension mustbe extended.Printed images ontopaper from thebypass tray areskewed.Does the number of sheets exceed thelimit? Set paper within the allowable range.Paper guides properly set? Set the paper guides properly to the paper size.A paper misfeedoccurs in the bypasstray.Paper size and type set properly?When using non-standard size paper or specialpaper, be sure to set the paper size and type.(See pages 2-3 to 2-5.)Does the number of sheets exceed thelimit? Set paper within the allowable range.Paper guides properly set? Set the paper guides properly to the paper size.When printing on aspecial size ofpaper, part of theprinted image ismissing.The paper size setting is not setcorrectly in the paper tray settings of thecustom settings.When using a special size of paper, set thecorrect paper size as explained in " Setting thepaper type and paper size " on page 2-5 . If thepaper size setting is not correct, part of the imagemay be cut off or the image may not print.