COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)C. Main Menu1. DISPLAYDisplay mode is for displaying the status/configuration of the printer.CHAPTER 10 TROUBLESHOOTING10-85Table 10-602• After entering the service mode, the following message is displayed on LCD “DISPLAY”.• If the “MENU” key is pressed, the next item of main menu is displayed on LCD.• If the “MENU” key is pressed while “MESSAGE/NAME” is displayed, “DISPLAY” is dis-played again.• If the “MENU” key is pressed, go to the sub menu of each main menu items. For details,see the detail information of each main menu item.• If the “CANCEL” key is pressed, exit service mode and reboot.Main MenuDISPLAYSENSOR MONITORTESTPAPER FEEDREAD MEMORYPARAMETERBIASWRITE MEMORYNo.12345678DescriptionIndicates the ROM version of the DC controllerPCB.‘DCON VERSION MC:xx.yy DC:XX.YY’Indicates the version of the ROM which controlsloads on the DC controller PCB (mechanicalworkings).‘XX.YY’Indicates the version of the ROM which controlthe communication between the video controller(PS/PCL) PCB on the DC controller PCB, con-trols high voltage, and controls some loads.Indicates the life of the photosensitive druminside the drum cartridge (at 126%, ‘E814’).Note that ‘2: warning 2 (100%)’ indicates thatthe copier may not be able to ensure a normallevel of quality.Remarksxx: version numberyy: R&D numberXX: version numberYY: R&D number0: normal1: warning 1 (70%)2: warning 2 (100%)4: drum cartridge memory errorSub MenuDCONVERSIONDRUM LIFEDownload free service manual at http://printer1.blogspot.com