• Code: E7-10
• Description: Shading trouble (Black correction)
  The CCD black scan level is abnormal when the shading.
• Causes: Improper connection of the CCD unit flat cable CCD unit abnormality MCU PWB abnormality.
• Remedy: Check connection of the CCD unit flat cable. Check the CCD unit.

• Code: E7-11
• Description: Shading trouble (White correction)
  The CCD white scan level is abnormal when the shading.
• Causes: Improper connection of the CCD unit flat cable Dirt on the mirror, the lens, and the reference white plate Copy lamp lighting abnormality CCD unit abnormality MCU PWB abnormality (When occurred in the SPF scan position.) Improper installation of the mirror unit
• Remedy: Clean the mirror, lens, and the reference white plate. Check the light quantity and lighting status of the copy lamp (SIM 05-03). Check the MCU PWB.

• Code: E7-16
• Description: Abnormal laser output
  When the laser output is stopped, HSYNC is detected.
• Causes: Laser abnormality MCU PWB abnormality.
• Remedy: Check the laser emitting diode operation. Replace the MCU PWB.

• Code: F2-02
• Description: Toner supply abnormality
  The maximum toner supply time is greatly exceeded.
• Causes: CRUM chip trouble Improper developing unit
• Remedy: Replace the CRUM chip. Replace the developing unit.

• Code: F2-04
• Description: Improper cartridge (Destination error, life cycle error)
  The destination of the machine differs from that of the CRUM. The life cycle information is other than "Not used (FFh)."
• Causes: CRUM chip defect Improper developing unit
• Remedy: Replace the CRUM chip. Replace the developing unit.

• Code: F5-02
• Description: Copy lamp lighting abnormality
  The copy lamp does not turn on.
• Causes: Copy lamp abnormality Copy lamp harness abnormality CCD PWB harness abnormality.
• Remedy: Use SIM 5-3 to check the copy lamp operations. When the copy lamp lights up. Check the harness and the connector between the CCD unit and the MCU PWB. When the copy lamp does not light up. Check the harness and the connector between the copy lamp unit and the MCU PWB. Replace the copy lamp unit. Replace the MCU PWB.

• Code: F6-10
• Description: FAX board trouble.
• Causes: FAX controller and FAX board memory abnormality.
• Remedy: Check connector/harness of FAX control PWB and MCU PWB. Check the grounding of the copier. Check FAX control PWB ROM. Replace the FAX PWB.

• Code: H2-00
• Description: Thermistor open
  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. Use SIM 14 to clear the self diagnostic display.