40718301TH Rev.6 91 /Table 6-1 (3/10)Category LCD status message Problem or status RemedyController errors(continued)ERROR nnCode(nn) Error71727374777980819091F0F1F2F3F4A failure occurred with the fuser (timeout erroretc.).A failure occurred with the thermistor (openerror).A failure occurred with the thermistor (shorterror).SSIO ErrorA toner sensor fault has occurred when theTOTAL DRAM COUNT is 30 or less.LED Head type ErrorI/F timeout occurred between the main controlboard and the operator panel.I/F timeout occurred between the main controlboard and the optional tray (High Capacity SecondPaper Feeder, Power Envelope Feeder, etc.).A watchdog timer timeout occurred.CPU ErrorMonitor error (double weight)Monitor error (argument error)Option Timeout ErrorOption Status ErrorBG Program ErrorRemedySee Section 6.5.2 -4.See Section 6.5.2 -4.See Section 6.5.2 -4.– Check the connection between the main control boardand the power supply/sensor board.– Replace the main control board or power supply/sen-sor board.– Check the installing of Image drum unit.– Replace the power supply/sensor board.Replace the correct LED Head.– Check the operator panel for proper connection.– Replace the flexible cable, operator panel or main con-trol board.See Section 6.5.2 -5.– Turn the power off, then back on again.– Replace the main control board.Note:When replacing the main control board,be sure to install the EEPROM from theold board onto the new board.
