• Code: SC237
• Description: FGATE error 1: Feedback remains LOW for C write
  After the start of timing to create the cyan image, the PFGATE register of the GAVD does not assert, even after 5 sec. when: • Images are created on the drum. • MUSIC patterns are created on the transfer belt. The BICU received a LOW feedback signal, but the signal remained LOW (indicating the lasers were still operating), even after creation of the next image should have started.
• Causes: • GAVD on the BICU defective • PCI I/F on the IPU defective • ASIC on the IOB defective • Check board connections, replace

• Code: SC240
• Description: LD error 1: K
  An error is asserted at the LD error terminal of the black, yellow, magenta, or cyan LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.
• Causes: • LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defective

• Code: SC241
• Description: LD error 1: Y
  An error is asserted at the LD error terminal of the black, yellow, magenta, or cyan LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.
• Causes: • LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defective

• Code: SC242
• Description: LD error 1: M
  An error is asserted at the LD error terminal of the black, yellow, magenta, or cyan LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.
• Causes: • LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defective

• Code: SC243
• Description: LD error 1: C
  An error is asserted at the LD error terminal of the black, yellow, magenta, or cyan LD driver after initialization of the LD because the power to the LD was higher or lower than the prescribed limit.
• Causes: • LD defective due to wear, damage, short circuit • LDB harness disconnected, loose or defective

• Code: SC268
• Description: Optical unit sensor error
  At power on, one of the two temperature sensors in the optics unit detected a temperature lower than 0°C for more than 1 sec. -or- It detected a temperature higher than 100°C for more than 1 sec.
• Causes: • Thermistor disconnected (causes extremely low temperature reading) • Thermistor damaged and short circuited (causes extremely high temperature reading) • BCU defective

• Code: SC269
• Description: Exposure thermistor 2 error
  At power on, exposure thermistor 2 detected a temperature lower than 0°C for more than 1 sec. -or- It detected a temperature higher than 100°C for more than 1 sec.
• Causes: • Thermistor disconnected (causes extremely low temperature reading) • Thermistor damaged and short circuited (causes extremely high temperature reading) • BCU defective

• Code: SC300
• Description: AC charge output error 1: K
  An interrupt checks the status of the power pack every 2 ms. This SC is issued if the BCU detects a short in the AC charge for black, magenta, cyan, or yellow (V = 0, for example) for 500 ms (250 times).
• Causes: • High voltage power supply • BCU defective • OPC unit defective