• Code: SC101
• Description: Exposure lamp error
  The white level peak did not reach the prescribed threshold when the white plate was scanned.
• Causes: • Dirty optics • Exposure lamp defective • Exposure lamp does not turn on • Lamp stabilizer defective • High voltage line leak • Power/signal harness defective

• Code: SC120
• Description: Scanner home position error 1
  The scanner home position sensor did not detect the home position (did not go OFF) after the scanner moved forward 20 mm.
• Causes: • Scanner motor driver board defective • Scanner motor defective • Scanner HP sensor defective • Harness between scanner motor and scanner I/O board disconnected or broken.

• Code: SC121
• Description: Scanner home position error 2
  The scanner home position sensor did not go ON after the scanner moved forward 1 mm and the feeler entered the HP sensor.
• Causes: • Scanner motor defective • Scanner HP sensor disconnected, defective

• Code: SC141
• Description: Black level detection error
  During AGC the value for black level was not within ±2 of the prescribed value. The copier can reproduce monochrome, but not color.
• Causes: • SBU defective • Harness defective

• Code: SC142
• Description: White level detection error
  During AGC the value for white level was not within ±7 of the prescribed value.
• Causes: • Exposure lamp defective • Harness disconnected, damaged • Dirty exposure glass, optics • Scanner motor, drive assembly defective • SBU board defective

• Code: SC144
• Description: SBU communication error
  When the machine is switched on, or when the machine returns to full operation from the energy save mode, the machine can not access the SBU register, or the SBU register values are abnormal.
• Causes: • Dirty exposure glass or optics • SBU board defective • SBU harness disconnected, defective

• Code: SC161
• Description: IDU error
  After the command is written into the DFID self-diagnosis startup register, the correct value is not stored in the register for the prescribed length of time after power on. -or- After the negate interruption of FGATE occurs, IDU is not recognized within the prescribed time during scanning.
• Causes: • IPU board defective (defective connection between ASIC and DFID, defective LSYNC)

• Code: SC180
• Description: Scanner fan lock
  001 One of the fan motors next to the exposure lamp did not switch on within 0.5 sec after the CPU issued the ON signal. 002 The scanner fan motor next to the SIOB did not switch on within 0.5 sec. after the CPU issued the ON signal.
• Causes: • Fan defective • Foreign object interfering with operation of fan • Motor harness loose, disconnected, or broken • SIOB defective • SBU defective