• Code: F6-99
• Description: Machine - FAX language error.
  Discrepancy of the destination of the machine and the FAX board.
• Causes: The destination of the machine differs from that of the FAX board. When installing to the machine that can install only MX-FX13.
• Remedy: Change the destination setting with SIM26-6. Replace the FAX board with one which. conforms to the destination of the machine.

• Code: F9-00
• Description: MX-NB12 board communication trouble.
  MX-NB12 print data reception error.
• Causes: Print data cannot be received from the MXNB12 for 3 min or more.
• Remedy: Reset the machine (Power OFF/ON).

• Code: H2-00
• Description: Thermistor open (MAIN)
  The thermistor is open. The fusing unit is not installed.
• Causes: Thermistor abnormality Control PWB abnormality Fusing section connector disconnection The fusing unit is not installed.
• Remedy: Check the harness and the connector between the thermistor and the PWB. Cancel the trouble with SIM 14.

• Code: H2-01
• Description: Thermistor open (SUB)
  The sub thermistor is open. The fusing unit is not installed.
• Causes: Sub thermistor abnormality Heater lamp abnormality Thermostat abnormality Main PWB abnormality
• Remedy: Use SIM 5-02 to check the heater lamp blinking operation. When normally lighting. Check the sub thermistor and its harness. Check the sub thermistor input circuit on the MAIN PWB. When not normally lighting. Check the lamp control circuit on the MCU PWB. Cancel the trouble with SIM 14.

• Code: H3-00
• Description: Heat roller high temperature detection (MAIN)
  The fusing temperature exceeds 245C°.
• Causes: Thermistor abnormality Control PWB abnormality Fusing section connector disconnection.
• Remedy: Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally. Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp keeps ON. Check the power PWB and the lamp control circuit on the MCU PWB. Cancel the trouble with SIM 14.

• Code: H3-01
• Description: Heat roller high temperature detection (SUB)
  The fusing temperature exceeds 245°C.
• Causes: Sub thermistor abnormality Heater lamp abnormality Thermostat abnormality Main PWB abnormality
• Remedy: Use SIM 5-02 to check the heater lamp blinking operation. When normally lighting. Check the sub thermistor and its harness. Check the sub thermistor input circuit on the MAIN PWB. When not normally lighting. Check the lamp control circuit on the MCU PWB. Cancel the trouble with SIM 14.

• Code: H4-00
• Description: Heat roller low temperature detection
  When the fusing temperature is 150C° or less in 55 sec from starting warming-up. When the warm-up complete temperature is not reached in 30 sec from reaching 150C°. When the fusing temperature is less than 100C° in 20 sec from the ready state. When the fusing temperature is less than 80C° for more than 300ms in the ready state or in printing. When the fusing temperature is less than 80C° for more than 300ms in the standby mode at a low temperature.
• Causes: Thermistor abnormality Heater lamp abnormality Thermostat abnormality Control PWB abnormality
• Remedy: Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally. Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp does not light up. Check for disconnection of the heater lamp and the thermostat. Check the interlock switch. Check the power PWB and the lamp control circuit on the MCU PWB. Cancel the trouble with SIM 14.

• Code: H5-01
• Description: 5 continuous POUT not-reached error
  When 5 continuous not-reached jams to the paper exit sensor (POUT) occur. The jam counter is backed up and it is used in a job after turning on the power.
• Causes: Jam paper is not removed from the fusing unit. (Jam paper remains.) Paper exit sensor breakdown or harness connection trouble Fusing unit installation trouble
• Remedy: Check for jam paper remaining in the fusing unit. (winding, etc.) Check the POUT sensor harness, and check installation of the fusing unit. Use SIM14 to clear the self diag display.