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

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

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

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

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

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

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

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