Code :

Code: F9 84
Description: 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: 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: H2 00
Description: 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 Details 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.

Code: H3 01
Description: Sub heater lamp abnormally high temperature hard detection trouble. The fusing sub thermistor causes abnormally high temperature
Causes: Sub thermistor defect. Control PWB failure. Fusing section connector contact failure.
Remedy: Check the sub heater lamp blinking with SIM 5-2-2. 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.

Code: H3 10
Description: Main heater lamp abnormally high temperature soft detection trouble. A/D value the fusing main thermistor causes abnormally high temperature (over 230°C).
Causes: Main heater lamp 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.

Code: H3 11
Description: Sub heater lamp abnormally high temperature soft detection trouble Details A/D value the fusing sub heater lamp thermistor causes abnormally high temperature (over 230°C).
Causes: Sub heater lamp thermistor defect. Control PWB failure. Fusing section connector contact failure.
Remedy: Check the sub heater lamp blinking with SIM 5-2-2. 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.