TroubleshootingOPERATION GUIDE 4-7Error MessagesThe following table lists errors and maintenance messages that you can bedealt with by yourself. If Call service appears, turn off the printer,disconnect the power cord, and contact your service technician.Some errors cause the alarm to sound. To stop the alarm, press[CANCEL].Message Corrective ActionAdd paper MPTray The paper has run out in the paper source displayed. Supply paper according tothe paper source displayed (paper cassettes, MP tray, optional paper feeders, oroptional envelope feeder).This message is displayed alternately with messages indicating the printer status,such as, Ready, Please wait, Processing, Waiting, and Form Feed TimeOut.Call serviceF###:F### represents a controller error (#=0, 1, 2, ...). Call for service. The printer doesnot operate when this message is displayed.Call service####:0123456#### represents a mechanical error (#=0, 1, 2, ...). Call for service. The printerdoes not operate when this message is displayed. The total number of pagesprinted is also indicated, e.g. 0123456.Cassette #not loadedThe corresponding paper cassette is not installed. Install the cassette. Thecassette number can be 1 (topmost) to 4 (bottom).Check wastetoner boxThis message warns following two cases. Install the new waste toner box.The waste toner box is not installed.The waste toner box is full.Clean printerPress GOPlease clean the inside of the printer. See Cleaning the Printer on page 3-8.This message will be displayed when replacing the toner container after themessage Replace toner C, M, Y, K is displayed. After cleaning the inside ofthe printer, press [GO] and the printer will be ready for printing.Close duplexerrear unitThe rear unit of the optional duplexer is open. Close the duplexer rear unit.Close duplexertop coverThe top cover of the optional duplexer is open. Close the duplexer top cover.Close papertransfer unitThe paper transfer unit is open. Close the paper transfer unit.Closeleft coverThe left cover of the printer is open. Close the left cover.