• Code: F9-00
• Description: Communication trouble between the controller and the printer controller (EF1)
  A communication error is detected during initial establishment or after establishment of communication with the EFI controller.
• Causes: Printer controller MFPcnt PWB cable trouble MFPcnt PWB cable trouble, printer controller PWB trouble
• Remedy: Case 1 Cause Printer controller MFPcnt PWB cable trouble Check and remedy Check the printer controller MFPcnt PWB cable. Case 2 Cause MFPcnt PWB cable trouble, printer controller PWB trouble Check and remedy Replace the MFPcnt PWB. Repair or replace the printer controller PWB. After completion of check, turn OFF/ON the machine and the printer controller.

• Code: H2-00
• Description: Non-contact thermistor detection thermistor open (TH_UM_AD2)
  Thermistor open
• Causes: Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble, fusing unit not-installed
• Remedy: Check the harness and the connector from the thermistor to the control PWB.

• Code: H2-01
• Description: Lower thermistor open (TH_LM)
  Thermistor open
• Causes: Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble, fusing unit not-installed
• Remedy: Check the harness and the connector from the thermistor to the control PWB.

• Code: H2-02
• Description: Sub thermistor open (TH_US)
  Thermistor open
• Causes: Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble, fusing unit not-installed
• Remedy: Check the harness and the connector from the thermistor to the control PWB.

• Code: H2-03
• Description: Non-contact thermistor compensation thermistor open (TH_UM_AD1)
  Thermistor open
• Causes: Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble
• Remedy: Check the harness and the connector from the thermistor to the control PWB.

• Code: H2-04
• Description: Hang-up preventing thermistor open (TH-US)
  Thermistor open
• Causes: Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble
• Remedy: Check the harness and the connector from the thermistor to the control PWB.

• Code: H3-00
• Description: Fusing section high temperature trouble (TH_UM)
  The fusing temperature inside the PWB exceeds the specified level.
• Causes: Thermistor trouble, control PWB trouble, fusing section connector connection error, AC power source trouble
• Remedy: 1) Use SIM5-2 to check blinking of the heater lamp. 2) If it blinks normally, check the thermistor and the harness. Check the control PWB thermistor input circuit section. 3) If the heater lamp keep lighting, check the AC PWB and the control PWB lamp control circuit. 4) Use SIM14 to cancel the trouble.

• Code: H3-01
• Description: Fusing section high temperature trouble (TH_LM)
  The fusing temperature inside the PWB exceeds the
  specified level.
• Causes: Thermistor trouble, control PWB trouble, fusing section connector connection error, AC power source trouble
• Remedy: 1) Use SIM5-2 to check blinking of the heater lamp. 2) If it blinks normally, check the thermistor and the harness. Check the control PWB thermistor input circuit section. 3) If the heater lamp keep lighting, check the AC PWB and the control PWB lamp control circuit. 4) Use SIM14 to cancel the trouble.