Brother International HL-3400CN Service Manual - Page 268

CHAPTER 8 TROUBLESHOOTING Display Message Meaning Countermeasure 16 ALIGN FU UNIT Fusing unit not installed • Remove the fusing unit and refit it. • Confirm it is correctly installed. 16 ALIGN BELT CG OPC belt cartridge not installed Confirm the installation of the OPC belt cartridge. 16 ALIGN FUSER CL ROLLER Fuser cleaner not installed. Install the fuser cleaner. 16 ALIGN LFU Incorrect connection between the engine and fusing unit. Connect the cable between the engine and fusing unit correctly. 17 MEDIA JAM FEED Paper jam at feeding area Remove the media cassette, and remove paper jammed at feeding entrance. 17 MEDIA JAM INNER Paper jam inside printer Open the transfer unit, and remove paper jammed inside. 17 MEDIA JAM OUTER Paper jam at paper exit area Open the transfer unit / paper exit unit and remove paper jammed inside. 17 MEDIA JAM DRUM Paper jam wound around the transfer drum Open the transfer unit and remove the OPC belt cartridge. Remove the paper jam by unwinding the paper from the transfer drum. 17 MEDIA JAM DUPLEX Duplex paper transportation • Open the duplex top cover jam. and remove the jammed paper from the inside of the printer. • Open the duplex center cover and remove the jammed paper from the inside of the printer. • Open the duplex bottom cover (M) and remove the jammed paper. 18 CLOSE PANEL Covers open FRONT/TOP/REAR/LFU Confirm that the covers are firmly closed. 18 CLOSE TR PANEL DPL Duplex unit cover is open. Confirm that the cover is firmly closed. 19 SLEEP MODE Printer under idling condition Printer automatically returns to the operating condition when a PRINT signal is sent. 01 WAIT _. 00 READY Printer warming-up ---- ---- Printer ready to print in These are normal operation standby status modes. 02 PRINT Printing in progress 8-10