• Code: E020-0201
• Description: Error in Y Developing Assembly
  The value is lower than the lower limit for the patch.
• Remedy: Go through the following: DISPLAY > P-LED-DA; perform cleaning first if P-LED-DA is 3F or more. If the Patch Sensor (UN47,UN48,UN49) value shows 1-digit, perform remedy from 3. If the supply area of the Developing Assembly is badly soiled, toner can be leaked. 1. Check installation of the Developing Assembly and the Drum. 2. Clean the Patch Sensor Window. 3. Check if the patch sensor is disconnected. 4. Replace the Patch Sensor. 5. Replace the Drum. 6. Check toner leak from the Toner Buffer Unit. 7. Check toner level in the Toner Container. 8. Check short-circuit of the harness of the Toner Supply Sensor (PS1).

• Code: E020-0202
• Description: Error in M Developing Assembly
  The value is lower than the lower limit for the patch.
• Remedy: Go through the following: DISPLAY > P-LED-DA; perform cleaning first if P-LED-DA is 3F or more. If the Patch Sensor (UN47,UN48,UN49) value shows 1-digit, perform remedy from 3. If the supply area of the Developing Assembly is badly soiled, toner can be leaked. 1. Check installation of the Developing Assembly and the Drum. 2. Clean the Patch Sensor Window. 3. Check if the patch sensor is disconnected. 4. Replace the Patch Sensor. 5. Replace the Drum. 6. Check toner leak from the Toner Buffer Unit. 7. Check toner level in the Toner Container. 8. Check short-circuit of the harness of the Toner Supply Sensor (PS2).

• Code: E020-0203
• Description: Error in C Developing Assembly
  The value is lower than the lower limit for the patch.
• Remedy: Go through the following: DISPLAY > P-LED-DA; perform cleaning first if P-LED-DA is 3F or more. If the Patch Sensor (UN47,UN48,UN49) value shows 1-digit, perform remedy from 3. If the supply area of the Developing Assembly is badly soiled, toner can be leaked. 1. Check installation of the Developing Assembly and the Drum. 2. Clean the Patch Sensor Window. 3. Check if the patch sensor is disconnected. 4. Replace the Patch Sensor. 5. Replace the Drum. 6. Check toner leak from the Toner Buffer Unit. 7. Check toner level in the Toner Container. 8. Check short-circuit of the harness of the Toner Supply Sensor (PS3).

• Code: E020-0204
• Description: Error in Bk Developing Assembly
  The value is lower than the lower limit for the patch
• Remedy: Go through the following: DISPLAY > P-LED-DA; perform cleaning first if P-LED-DA is 3F or more. If the Patch Sensor (UN47,UN48,UN49) value shows 1-digit, perform remedy from 3. If the supply area of the Developing Assembly is badly soiled, toner can be leaked. 1. Check installation of the Developing Assembly and the Drum. 2. Clean the Patch Sensor Window. 3. Check if the patch sensor is disconnected. 4. Replace the Patch Sensor. 5. Replace the Drum. 6. Check toner leak from the Toner Buffer Unit. 7. Check toner level in the Toner Container. 8. Check short-circuit of the harness of the Toner Supply Sensor (PS4).

• Code: E020-0230
• Description: Error in M Developing Assembly
  The average of ATR reference value was lower than the specified value at the time of ATR Sensor initialization.
• Remedy: 1. Check short-circuit of the ATR Sensor (TS6) Harness. 2. Replace the Developing Assembly.

• Code: E020-0231
• Description: Error in M Developing Assembly
  The average of ATR reference value was higher than the specified value at the time of ATR Sensor initialization.
• Remedy: 1. Check if the ATR Sensor (TS6) Connector is properly connected. 2. Check short-circuit of the ATR Sensor Harness. 3. Replace the Developing Assembly.

• Code: E020-0240
• Description: Error in M Developing Assembly
  Unable to adjust the control voltage at the time of ATR initialization: less than the specified value (3.2V).
• Remedy: 1. Check if the ATR Sensor (TS6) Connector is properly connected. 2. Check short-circuit of the ATR Sensor Harness. 3. Replace the Developing Assembly.

• Code: E020-0241
• Description: Error in M Developing Assembly
  Unable to adjust the control voltage at the time of ATR initialization: exceeds the specified value (6.8V).
• Remedy: 1. Check short-circuit of the ATR Sensor (TS6) Harness. 2. Replace the Developing Assembly.