• Code: SC213
• Description: Laser beam detection error 1: C (Cyan)
  The laser synchronization sensor failed to detect the beginning and end of the laser beam flash for the designated color onto the polygon mirror while the mirror is rotating at the prescribed number of revolutions.
• Causes: • Laser synchronization detector sensor connection loose, not connected • Laser synchronization detector sensor defective

• Code: SC220
• Description: Laser Synchronization Detector Error 1: K Leading Edge: LD0
  While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 black, or leading edge, even after the laser diode has been firing for 2 sec.
• Causes: • Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Laser synchronizing detector defective • Beam not reflected in photo detection • GAVD on the BICU is defective • LD driver board defective • LDB defective • BCU defective • Check board connections, replace

• Code: SC221
• Description: Laser Synchronization Detector Error 2: K Leading Edge (Other than LD0)
  While the polygon motor is rotating normally, no synchronizing detection signal is output for black, leading edge for any LD other than LD0, even after the laser diode has been firing for 2 sec.
• Causes: • Beam not reflected in photo detection • GAVD on the BICU defective • LD driver defective • LDB defective • BCU defective • Check board connections, replace

• Code: SC222
• Description: Laser Synchronization Detector Error 1: Y Leading Edge: LD0
  While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 yellow, leading edge, even after the laser diode has been firing for 2 sec.
• Causes: • Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Laser synchronizing detector defective • GAVD on the BICU defective • LD driver board defective • LDB defective • BCU defective • Check board connections, replace

• Code: SC223
• Description: Laser Synchronization Detector Error 2: Y Leading Edge (Other than LD0)
  While the polygon motor is rotating normally, no synchronizing detection signal is output for yellow, leading edgefor any LD other than LD0, even after the laser diode has been firing for 2 sec.
• Causes: • Beam not reflected in photo detection • GAVD on the BICU defective • LD driver defective • LDB defective • BCU defective • Check board connections, replace

• Code: SC224
• Description: Laser Synchronization Detector Error 1: M Leading Edge: LD0
  While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 magenta, leading edge, even after the laser diode has been firing for 2 sec.
• Causes: • Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Laser synchronizing detector defective • GAVD on the BICU defective • LD driver board defective • LDB defective • BCU defective • Check board connections, replace

• Code: SC225
• Description: Laser Synchronization Detector Error 2: M Leading Edge (Other than LD0)
  While the polygon motor is rotating normally, no synchronizing detection signal is output for magenta, leading edge for any LD other than LD0, even after the laser diode has been firing for 2 sec.
• Causes: • GAVD on the BICU defective • LD driver defective • LDB defective • BCU defective • Check board connections, replace

• Code: SC226
• Description: Laser Synchronization Detector Error 1: C Leading Edge: LD0
  While the polygon motor is rotating normally, no synchronizing detection signal is output for LD0 cyan, leading edge, even after the laser diode has been firing for 2 sec.
• Causes: • Harness between the laser synchronizing detector and I/F unit is disconnected, defective • Laser synchronizing detector defective • GAVD on the BICU defective • LD driver board defective • LDB defective • BCU defective • Check board connections, replace