• Code: 17-4
• Description: Inappropriate Opt FDR - Inappropriate Option Feeder (for example B6300 or B6500) is detected.
• Remedy:

• Code: 17-5
• Description: OCT Unit Fail - Option OCT is not installed when OCT mode is selected.
• Remedy:

• Code: 17-6
• Description: Duplex Unit Fail - Option Duplex removed after powering on.
• Remedy:

• Code: 2-1
• Description: NVM Abnormality - Failure of the NVRAM occurred at powering on. - Write error to the NVRAM occurred.
• Remedy: FIP1.1 Possible causative parts: HVPS/MCU 1 Does Error occur when the power is turned ON? Go to step 4. Go to step 2. 2 Does Error still occur when the power is turned OFF and ON again? Go to step 4. Go to step 3. 3 Does Error still occur after several ON/OFF procedures of the power? Go to step 4. End of work *1 4 Checking HVPS/MCU non-volatile memory setup mode Is non-volatile memory setup mode accessible? Checks by Chapter 2 Diagnostic [ADJUSTMENT PARAMETER INTIALIZE MODE]. Go to step 5. Replace HVPS/MCU. 5 Checking NVRAN for data setup Are all NVRAM data set appropriately? Checks by Chapter 2 Diagnostic [ADJUSTMENT PARAMETER INTIALIZE MODE]. Go to step 7. Go to step 6. 6 Checking Error after changing HVPS/MCU data setup Change NV RAM data to the correct setup value, and then turn the power ON again. Does Error still occur? Replace HVPS/MCU, then go to step 7. End of work 7 Checking after replacing HVPS/MCU Does Error occur? Go to FIP2.19 Electrical Noise. End of work

• Code: 2-2
• Description: Fan Motor Abnormality - Abnormal rotation or other failure of the FAN MAIN or FAN SUB occurred.
• Remedy: FIP1.4 FAN MAIN FAN SUB LVPS HVPS/MCU 1 Checking FAN MAIN for rotation (1) Does FAN MAIN rotate, when the power is turned ON? Go to step 2. Go to step 5. 2 Checking FAN SUB for rotation (1) Does FAN SUB rotate, when the power is turned ON? Go to step 3. Go to step 9. 3 Checking FAN MAIN for rotation (2) Does FAN MAIN rotate in high-speed? Checks by Chapter 2 Diagnostic [Fan Motor, High Speed Test]. Go to step 4. Go to step 5. 4 Checking FAN SUB for rotation (2) Does FAN SUB rotate in high-speed? Checks by Chapter 2 Diagnostic [Fan Motor, High Speed Test]. Replace HVPS/ MCU, and watch FUN SUB for a while. Go to step 9. 5 Checking the power to FAN MAIN Is FAN MAIN connected correctly, and is the voltage across P/J24-18 <=> P/J24-17, 24 VDC? (12 VDC, when half-speed) Go to step 6. Go to step 7. 6 Checking the FAN ALARM signal (1) Is the voltage across P/J24-17 <=> P/J24-16, 0.82 VDC or more? Replace FAN MAIN. Replace HVPS/MCU. 7 Checking after replacing FAN MAIN Replace the FAN MAIN. Does FAN Error occur when the power is turned ON? Go to step 8. End of work 8 Checking after replacing LVPS Replace the LVPS. Does FAN Error occur when the power is turned ON? Replace HVPS/MCU. End of work 9 Checking the power to FAN SUB Is FAN SUB connected correctly, and is the voltage across P/J27-19 <=> P/J27-18, 24 VDC? (12 VDC, when half-speed) Go to step 10. Go to step 11. 10 Checking the FAN ALARM signal Is the voltage across P/J27-18 <=> P/J27-17, 0.82 VDC or more? Replace FAN SUB Replace HVPS/MCU. 11 Checking after replacing FAN SUB Replace the FAN SUB. Does FAN Error occur when the power is turned ON? Go to step 12. End of work 12 Checking after replacing LVPS Replace the LVPS. Does FAN Error occur when the power is turned ON? Replace HVPS/MCU. End of work

• Code: 2-3
• Description: Main Motor Abnormality - Rotation of MAIN MOTOR does not reach the specified speed.
• Remedy: FIP1.5 Possible causative parts: MAIN MOTOR GEAR ASSY HOUSING GEAR ASSY PLATE LVPS HVPS/MCU 1 Checking MAIN MOTOR installation Are MAIN MOTOR, GEAR ASSY HOUSING and GEAR ASSY PLATE installed correctly? With tool Go to step 2. Without tool Go to step 3. Reinstall obstructive parts. 2 Checking MAIN MOTOR for operation Does the MAIN MOTOR rotate, and each gear rotate normally? Checks by Chapter 2 Diagnostic [Main Motor Test]. Remove COVER LEFT to check. Replace HVPS/MCU. Go to step 3. 3 Checking GEAR ASSY HOUSING and GEAR ASSY PLATE for operation Does each gear rotate normally? Rotate and check each gear of GEAR ASSY HOUSING and GEAR ASSY PLATE. Go to FIP2.2 MAIN MOTOR. Replace the obstructive parts.

• Code: 2-4
• Description: ROS Motor Abnormality - Interval of /BD signal after ROS Motor starts is delayed than the specified value. - Interval of /BD signal became delayed than the specified value after it reached the specified value. - Laser beam output is not the specified level.
• Remedy: FIP1.2 Possible causative parts: ROS ASSY HVPS/MCU EP CARTRIDGE HARNESS ASSY ROS LVPS 1 Checking NVRAM for data setup value Are the value of NV03 (resolution) and the value of NV04 (Laser Diode output) set at the initial setup value in the factory? Checks by Chapter 2 Diagnostic [ADJUSTMENT PARAMETER INITIALIZE MODE]. Go to FIP2.3 ROS ASSY. Set NV03 and NV04 to factory setup, and then check again. If Error still occurs, go to FIP2.3 ROS ASSY.

• Code: 2-6
• Description: Fuser Abnormality - Fuser does not reach the specified temperature after the specified time elapsed. - Fuser Lamp lights for ten seconds or more in standby. - Fuser temperature became 125 °C or lower during printing. - Fuser temperature became 220 °C or higher. - The thermistor (thermal sensor) have break.
• Remedy: FIP1.3 Possible causative parts: FUSER ASSY HVPS/MCU LVPS HARNESS ASSY FUSER HARNESS ASSY LVPS 1 Checking the thermistor for operation Does Error occur soon after the power is turned ON? Error occurs as soon as the power is turned ON, or just after the time when a short warm up period elapsed. Replace FUSER ASSY. Go to FIP2.4 FUSER ASSY.