• Code: F9-82
• Description: Printer PWB communication trouble (Overrun)
  Communication trouble between MCU and printer PWB (Overrun error)
• Causes: Printer PWB connector disconnection. Harness trouble between the printer PWB and the MCU PWB. Motherboard connector pin breakage. Printer PWB ROM defect/Data failure.
• Remedy: Check the connectors and the harness of the printer PWB and MCU PWB. Check the grounding of the copier. Check ROM on printer PWB.

• Code: F9-84
• Description: Printer PWB communication trouble (Framing)
  Communication trouble between MCU and printer PWB (Framing error)
• Causes: Printer PWB connector disconnection. Harness trouble between the printer PWB and the MCU PWB. Motherboard connector pin breakage. Printer PWB ROM defect/Data failure.
• Remedy: Check the connectors and the harness of the printer PWB and MCU PWB. Check the grounding of the copier. Check ROM on printer PWB.

• Code: F9-88
• Description: Printer PWB communication trouble (Time-out)
  Communication trouble between MCU and printer PWB (Time-out error)
• Causes: Printer PWB connector disconnection. Harness trouble between the printer PWB and the MCU PWB. Motherboard connector pin breakage. Printer PWB ROM defect/Data failure.
• Remedy: Check the connectors and the harness of the printer PWB and MCU PWB. Check the grounding of the copier. Check ROM on printer PWB.

• Code: F9-96
• Description: MCU and PCL PWB communication versions discrepancy error
  Incompatible PCL PWB was installed to the copier
• Causes: Different PCL PWB was installed.
• Remedy: Install the MX-PB12 to the copier

• Code: F9-99
• Description: Printer PWB language error
  The machine language setup does not coincide with the PCL board language setup.
• Causes: PCL board connection error. SIM setup error.
• Remedy: Check combination between the firmware on PCL board and the panel screen data, and download the correct version, if necessary. Check the machine language information. (Machine language setup: SIM 26-22)

• Code: H2-00
• Description: Main heater lamp thermistor open hard detection
  Main heater lamp thermistor open detection. Fusing unit not installed.
• Causes: Main thermistor defect. Control PWB failure. Fusing section connector contact failure. Fusing unit not installed.
• Remedy: Check the harness and the connector of the thermistor and the MCU.

• Code: H2-01
• Description: Sub heater lamp thermistor open hard detection
  Fusing sub thermistor open detection. Fusing unit not installed.
• Causes: Sub thermistor defect. Control PWB failure. Fusing section connector contact failure. Fusing unit not installed.
• Remedy: Check the harness and the connector of the thermistor and the MCU.

• Code: H3-00
• Description: Main heater lamp abnormally high temperature hard detection trouble
  The fusing main heater thermistor causes abnormally high temperature
• Causes: Main thermistor defect. Control PWB failure. Fusing section connector contact failure.
• Remedy: Check the main heater lamp blinking with SIM 5-2-1. When the lamp blinks normally: Check the thermistor and the harness. Check the MCU PWB thermistor input circuit. If lamp lights and stays lit: Check the power circuit and the lamp control circuit on MCU PWB. Clear the display of self-diagnostics with SIM 14.