2© 2008 - 2011 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO2020C/2330C/2820C/2830C/3520C/3530C/4520CSELF-DIAGNOSTIC MODE2 - 7[FAX] button: ON/[COPY] button: OFF ([FAX] LED: ON/[COPY] LED: OFF)Digitalkey Button Items to checkContentsHighlighted displaye.g.Normal displaye.g.[1]A LCF connection Not connected ConnectedB Exit sensor Paper present No paperC - - -D - - -E Transfer belt installation detection Not connected ConnectedF 2nd drawer feeding jam sensor Paper present No paperG 1st drawer feeding jam sensor Paper present No paperH - - -[2]A Polygonal motor ready signal ReadyB 24V Power supply Power ON Power OFFC ADU opening/closing switch ADU opened ADU closedD Laser shutter open/close detection ON OFFE Waste toner box full detection sensor Waste toner box full Not fullF 2nd transfer roller position detection sensor Released ContactedG Used toner motor lock detection sensor Sensor blocked Sensor not blockedH Belt contact position detection sensor Color Black[3]A - - -B - - -C - - -D Transfer cover switch Cover opened Cover closedE Toner cartridge detection sensor-K Cartridge present No CartridgeF Toner cartridge detection sensor-C Cartridge present No CartridgeG Toner cartridge detection sensor-M Cartridge present No CartridgeH Toner cartridge detection sensor-Y Cartridge present No Cartridge[4]A ADU exit sensor Paper present No paperB ADU entrance sensor Paper present No paperC Bypass feed paper existence sensor No paper Paper presentD Bypass feed sensor No paper Paper presentE Bypass feed paper width sensor 3(Refer to table1)Bit 1 Bit 0F Bypass feed paper width sensor 2(Refer to table1)Bit 1 Bit 0G Bypass feed paper width sensor 1(Refer to table1)Bit 1 Bit 0H Bypass feed paper width sensor 0(Refer to table1)Bit 1 Bit 0[5]A - - -B - - -C - - -D - - -E - - -F RADF connection Connected Not connectedG Platen sensor Platen cove opened Platen cover closedH Carriage home position sensor Home position Other than homeposition