• Code: 6A
• Description: Fuser temperature does not reach 60°C within the specified time (center thermistor)
• Causes: 1 Fuser unit failure. 2 Main PCB failure.
• Remedy: 1 Fuser unit failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: 6B
• Description: Fuser temperature does not reach 100°C within the specified time (center thermistor)
• Causes: 1 Fuser unit failure. 2 Main PCB failure.
• Remedy: 1 Fuser unit failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: 6C
• Description: Fuser temperature exceeds its higher limit (center thermistor)
• Causes: 1 Fuser unit failure. 2 Main PCB failure.
• Remedy: 1 Fuser unit failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: 6D
• Description: Fuser temperature exceeds its lower limit (center thermistor)
• Causes: 1 Fuser unit failure. 2 Main PCB failure.
• Remedy: 1 Fuser unit failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: 6E
• Description: Fuser temperature does not rise (center thermistor)
• Causes: 1 Fuser unit failure. 2 Main PCB failure.
• Remedy: 1 Fuser unit failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: 6F
• Description: Hardware detects extremely high temperature of the center or side thermistors
• Causes: 1 Fuser unit failure. 2 Main PCB failure.
• Remedy: 1 Fuser unit failure Replace the fuser unit. 2 Main PCB failure Replace the main PCB ASSY.

• Code: 70
• Description: Fuser motor error
• Causes: 1 Motor failure. 2 Main PCB failure.
• Remedy: 1 Motor failure Replace the main motor. 2 Main PCB failure Replace the main PCB ASSY.

• Code: 71
• Description: Laser unit polygon motor failure
• Causes: 1 Laser unit failure. 2 Main PCB failure.
• Remedy: 1 Laser unit failure Replace the laser unit. 2 Main PCB failure Replace the main PCB ASSY.