• Code: E020-xxD1
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  For INIT control (service mode INISET-*) at time of initial setup, the average of the light Ref values is 462 or lower. The ATR sensor is damaged or has an open circuit. The connector has poor contact.
• Remedy: Turn off and then on the main power; then, execute the intermediate transfer belt.

• Code: E020-xxD2
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  Fore INIT control (service mode INISET-*) at time of initial setup, the average of the patch Sig values is 200 or lower. The patch sensor is damaged or has an open circuit. the connector has poor contact. The primary transfer engagement is faulty. The mounting of the developing assembly is faulty.
• Remedy: Turn off and then on the main power; then, execute the intermediate transfer belt.

• Code: E020-xxD4
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  For INTI control (service mode INISET-*) at time of initial setup, the average of the light Sig values is 800 or higher. The ATR sensor is damaged or has an open circuit. The connector has poor contact. The amount of supply is too high.
• Remedy: Turn off and then on the main power; then, execute the intermediate transfer belt.

• Code: E020-xxD5
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  For INTI control (service mode INISET-*) at time of initial setup, the average of the light Ref values is 562 or higher. The ATR sensor is damaged or has an open circuit. The connector has poor contact.
• Remedy: Turn off and then on the main power; then, execute the intermediate transfer belt.

• Code: E020-xxDA
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  For INIT control (service mode INISET-*) at time of initial setup, the variation among the 72 night Sig value samplings is 100 or more. The ATR sensor is damaged or has an open circuit. The connector has poor contact. The stirring of toner is faulty.
• Remedy: Turn off and then on the main power; then, execute the intermediate transfer belt.

• Code: E020-xxDB
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  For INIT control (service mode INISET-*) at time of initial setup, the variation among the 72 light Ref samplings is 100 or more. The ATR sensor is damaged or has an open circuit. The connector has poor contact.
• Remedy: Turn off and then on the main power; then, execute the intermediate transfer belt.

• Code: E020-xxDC
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  For INIT control (service mode INISET-*), the average of the patch Sig values is 800 or higher. The patch sensor is damaged or has an open circuit. The connector has poor contact. the primary transfer engagement if faulty. The mounting of the developing assembly is faulty. The amount of supply is too high.
• Remedy: Turn off and then on the main power; then, execute the intermediate transfer belt.

• Code: E020-xxF1
• Description: There is an ATR error. xx=01 for Y; xx=02 for M; xx=03 for C; xx=04 for without color distinction
  The connector or the color toner supply clutch is not connected.
• Remedy: Turn off and then on the main power; then, execute ITB cleaning.