• Code: 389.626
• Description: RC Data Linearity Fail M. The result from adding the skew/bow correction value to the M color linearity correction value has exceeded the settable range. (This is a hidden failure. The LPH Slow Scan linearity cannot be guaranteed and Data is only recorded in history.)
• Remedy: Check that the value stored in LPH (M) EEPROM is correct. Has any M color related Chain No. 061 Fail occurred? Y↓ N→Check the following: • Check that the value of dc131 NVM Read/Write [760-024] is "0". • The Imaging Unit (M) for improper installation. If no problems are found, replace the following parts in sequence: • Imaging (M) • LPH Unit (M) • Rear Holder Assembly (M) Replace the LPH Unit (M). If the problem persists, replace the MCU PWB.

• Code: 389.627
• Description: RC Data Linearity Fail C. The result from adding the skew/bow correction value to the C color linearity correction value has exceeded the settable range. (This is a hidden failure. The LPH Slow Scan linearity cannot be guaranteed and Data is only recorded in history.)
• Remedy: Check that the value stored in LPH (C) EEPROM is correct. Has any C color related Chain No. 061 Fail occurred? Y↓ N→Check the following: • Check that the value of dc131 NVM Read/Write [760-024] is "0". • The Imaging Unit (C) for improper installation. If no problems are found, replace the following parts in sequence: • Imaging Unit (C) • LPH Unit (C) • Rear Holder Assembly (C) Replace the LPH Unit (C). If the problem persists, replace the MCU PWB.

• Code: 389.628
• Description: RC Data Linearity Fail K. The result from adding the skew/bow correction value to the K color linearity correction value has exceeded the settable range. (This is a hidden failure. The LPH Slow Scan linearity cannot be guaranteed and Data is only recorded in history.)
• Remedy: Check that the value stored in LPH (K) EEPROM is correct. Has any K color related Chain No. 061 Fail occurred? Y↓ N→Check the following: • Check that the value of dc131 NVM Read/Write [760-024] is "0". • The Imaging Unit (K) for improper installation. If no problems are found, replace the following parts in sequence: • Imaging Unit (K) • LPH Unit (K) • Rear Holder Assembly (K) Replace the LPH Unit (K). If the problem persists, replace the MCU PWB.

• Code: 391.313
• Description: CRUM ASIC Communication Fault. Communication error between CPU of the MCU PWB and ASIC was detected.
• Remedy: 1. Turn the power Off and On. 2. Turn the power OFF and replace the MCU PWB.

• Code: 391.400
• Description: Waste Toner Bottle Near Full. The Waste Toner Bottle Full Sensor detected Near Full state.
• Remedy: The Waste Toner Bottle needs to be replaced soon. Replace the Waste Toner Bottle (PL 8.2) as required. If the problem persists, check the Waste Toner Bottle Full Sensor. Turn the power On and enter the Diag mode. Turn On dc330 Component Control [091-201]. Use a sheet of paper, etc. to block/clear the light path to the Waste Toner Bottle Full Sensor. Does the display change between High/Low? Y↓ N→Use Transmissive Sensor RAP to check the Waste Toner Bottle Full Sensor. Press the Stop button and turn the power Off. Replace the MCU PWB.

• Code: 391.401
• Description: Drum Cartridge K Near Life. It was detected that the replacement timing for the Imaging Unit (K) is closer than Pre Near.
• Remedy: The Imaging Unit (K) needs to be replaced soon. Replace the Imaging Unit (K) as required.

• Code: 391.402
• Description: Drum Cartridge K Life Over. Imaging Unit (K) has reached the end of its life span.
• Remedy: Replace the Imaging Unit (K).

• Code: 391.411
• Description: Drum Cartridge Y Near Life. It was detected that the replacement timing for the Imaging Unit (Y) is closer than Pre Near.
• Remedy: The Imaging Unit (Y) needs to be replaced soon. Replace the Imaging Unit (Y) as required.