• Code: F2-32
• Description: Process control trouble (Drum marking scan trouble)
  The drum marking size, density, or the number of units is improper.
• Causes: Drum marking sensor trouble
  Improper connection of the harness between the PCU PWB and the drum marking sensor
  The drum marking sensor is dirty. OPC drum cleaning trouble
• Remedy: Case 1 Cause Drum marking sensor trouble Check and remedy Use SIM 44-02 to perform the process control sensor gain adjustment. Case 2 Cause Improper connection of the harness between the PCU PWB and the drum marking sensor Check and remedy If "Error" is displayed, it may be considered as a breakdown. Check the sensor and the harness. Case 3 Cause The drum marking sensor is dirty. OPC drum cleaning trouble Check and remedy If the adjustment is completed, check the drum surface conditions.

• Code: F2-37
• Description: Drum marking sensor gain adjustment error
  Before starting process control, the drum marking area surface is read by the sensor to make the sensor gain adjustment so that the output is fixed to a certain level. Though the sensor gain is changed, the output is not fixed to a certain level.
• Causes: Drum marking sensor trouble
  Improper connection of the harness between the PCU PWB and the drum marking sensor
  The drum marking sensor is dirty. OPC drum cleaning trouble
• Remedy: Case 1 Cause Drum marking sensor trouble Check and remedy Use SIM 44-02 to perform the process control sensor gain adjustment. Case 2 Cause Improper connection of the harness between the PCU PWB and the drum marking sensor Check and remedy If "Error" is displayed, it may be considered as a breakdown. Check the sensor and the harness. Case 3 Cause The drum marking sensor is dirty. OPC drum cleaning trouble Check and remedy If the adjustment is completed, check the drum surface conditions.

• Code: F2-39
• Description: Process thermistor breakdown
  When the input value of the process thermistor is detected as 235 or greater or 22 or smaller for 3 times continuously.
• Causes: Improper connection of the process thermistor harness.
  Process thermistor trouble
  PCU PWB trouble
• Remedy: Case 1 Cause Improper connection of the process thermistor harness. Check and remedy Check connection of the connector and the harness of the process thermistor. Case 2 Cause Process thermistor trouble Check and remedy Check the process thermistor. Case 3 Cause PCU PWB trouble Check and remedy Check the PCU PWB.

• Code: F2-46
• Description: Developing thermistor breakdown
  When the input value of the process thermistor is detected as 244 or greater or 20 or smaller for 3 times continuously
• Causes: Developing thermistor harness connection trouble
  Developing thermistor harness trouble
  PCU PWB trouble
• Remedy: Case 1 Cause Developing thermistor harness connection trouble Check and remedy Check connection of the connector and the harness of the developing thermistor. Case 2 Cause Developing thermistor harness trouble Check and remedy Check the developing thermistor Case 3 Cause PCU PWB trouble Check and remedy Check the PCU PWB.

• Code: F2-47
• Description: Room temperature thermistor breakdown
  When the input value of the process thermistor is detected as 235 or greater or 22 or smaller for 3 times continuously.
• Causes: Improper connection of the room temperature thermistor harness.
  Room temperature thermistor trouble
  PCU PWB trouble
• Remedy: Case 1 Cause Improper connection of the room temperature thermistor harness. Check and remedy Check connection of the connector and the harness of the process thermistor. Case 2 Cause Room temperature thermistor trouble Check and remedy Check the room temperature thermistor. Case 3 Cause PCU PWB trouble Check and remedy Check the PCU PWB.

• Code: F2-48
• Description: Developing humidity sensor break down
  When the output value of the development humidity sensor is detected as 38 or smaller or 255 or greater. The output value is the average value of 5 sampling data in the interval of 100ms.
• Causes: Developing humidity sensor harness connection trouble
  Developing humidity sensor trouble
  PCU PWB trouble
• Remedy: Case 1 Cause Developing humidity sensor harness connection trouble Check and remedy Check connection of the connector and the harness of the developing humidity sensor. Case 2 Cause Developing humidity sensor trouble Check and remedy Check the developing humidity sensor Case 3 Cause PCU PWB trouble Check and remedy Check the PCU PWB.

• Code: F3-12
• Description: Machine tray 1 lift-up trouble
  PED does not turn on within the specified time. LUD does not turn on within the specified time. The trouble occurs 3 times continuously that the upper limit sensor does not turn on by lift-up operation for 21sec when inserting a tray or for 2sec when printing. For the first and the second times, guide the user to pull out the tray in case of a tray size error.
• Causes: PED, LUD trouble No. 1 tray lift-up motor trouble Improper connection of the harness of the PCU PWB, the lift-up unit, and the paper feed unit
• Remedy: Check the harness and connector of PED and LUD Lift-up trouble unit check. Use SIM 15 to cancel the trouble.

• Code: F3-22
• Description: Machine tray 2 lift-up trouble
  MCPED does not turn on within the specified time. MCLUD does not turn on within the specified time. The trouble occurs 3 times continuously that the upper limit sensor does not turn on by lift-up operation for 21sec when inserting a tray or for 2sec when printing. For the first and the second times, guide the user to pull out the tray in case of a tray size error.
• Causes: MCPED, MCLUD trouble No. 2 tray lift-up motor trouble Improper connection of the harness of the PCU PWB, the lift-up unit, and the paper feed unit
• Remedy: Check the harness and the connector of MCPED and MCLUD. Lift-up trouble unit check. Use SIM 15 to cancel the trouble.