41388601TH Rev.2 106 /6.5.2 LCD message troubleshooting(1) LCD MessageThe message on the LCD (liquid crystal display) tells the problem situation of the printer.Implement the appropriate troubleshooting base on the message.No. Problem Flowchart Number1 The printer does not work normally after being turned on. 12 JAM ErrorPaper Input Jam (1st Tray) 2-1Paper Input Jam (MT) 2-2Paper Feed Jam 2-3Paper Eject Jam 2-4DUPLEX Jam 2-53 Paper Size Error 34 I/D Unit Up/Down Error 45 Fuser Unit Error 56 Fan Motor Error 6Note: When replacing the engine board (L73 PWB), demount the EEPROM chip from the oldboard and remount it on the new one.
