Page: 72Service Manual - OKIPAGE10iChapter 6 Troubleshooting ProceduresCategory LCD statusmessageProblem or status RemedyControllererrorsCode(nn)Error71 A failure occurred with the fuser(timeout error etc).See Section 6.5.2-(4).72 A failure occurred with the fuser(thermistor open error).See Section 6.5.2-(4).73 A failure occurred with the fuser(thermistor short error).See Section 6.5.2-(4).74 SSIO Error - Check the connectionbetween the main controlboard and the powersupply/sensor board.- Replace the main controlboard or powersupply/sensor board.77 A toner sensor fault hasoccurred when the TOTALDRUM COUNT is 30 or less.- Check the installing ofimage drum unit.- Replace the powersupply/sensor board.80 I/F timeout occurred betweenthe main control board and theoperator panel.- Check the operatorpanel for properconnection.- Replace the flexiblecable, operator panel ormain control board.81 See Section 6.5.2-(5).9091F0F1- Turn the power off, thenback on again.- Replace the main controlboard.Note: When replaced themain control board, besure to install theEEPROM from the oldboard to the new board.Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)