• Code: E521
• Description: Color Developing Motor's turning at abnormal timing
  - The Motor Lock signal remains LOW for a predetermined continuous period of time while the Motor remains stationary.
• Causes: • Color Developing Motor (M3) • DC Power Supply (PU1) • Mechanical Control Board (PWB-M)
• Remedy: 1 M3 operation check PWB-M CNDM2-5 (REM) PWB-M CNDM2-8 (LOCK) C-22 2 Change PU1 - - 3 Change PWB-M

• Code: E550
• Description: Suction Fan Motor's failure to turn
  - The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Causes: • Mechanical Control Board (PWB-M) • Right Door
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. - - 2 Change Right Door - - 3 Change PWB-M

• Code: E551
• Description: Cooling Fan Motor/1's failure to turn
  - The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Causes: • Cooling Fan Motor/1 (M12) • Mechanical Control Board (PWB-M)
• Remedy: 1 heck the connector of motor for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 M12 operation check PWB-M CNDM2-15 (REM) PWB-M CNDM2-16 (LOCK) C-22 4 Change PWB-M

• Code: E552
• Description: Fusing Cooling Fan Motor/1's failure to turn
  - The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary
• Causes: • Fusing Cooling Fan Motor/1 (M11) • Mechanical Control Board (PWB-M)
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 M11 operation check PWB-M CNLP-9 (ON) PWB-M CNLP-11 (LOCK) C-11 4 Change PWB-M

• Code: E553
• Description: Fusing Cooling Fan Motor/2's failure to turn
  - The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary
• Causes: • Mechanical Control Board (PWB-M) • Right Door
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 M13 operation check PWB-M CNDM1-14 (ON) PWB-M CNDM1-17 (LOCK) K to L-1 4 Change PWB-M

• Code: E554
• Description: Ozone Ventilation Fan Motor's failure to turn
  - The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary
• Causes: • Ozone Ventilation Fan Motor (M14) • Mechanical Control Board (PWB-M)
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 M14 operation check PWB-M CNDM1-14 (ON) PWB-M CNDM1-17 (LOCK) K to L-1 4 Change PWB-M

• Code: E555
• Description: Power Supply Cooling Fan Motor/1's failure to turn
  - The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Causes: • Power Supply Cooling Fan Motor/1 (M8) • Mechanical Control Board (PWB-M)
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 M8 operation check PWB-M CNLV3-2 (ON) PWB-M CNLV3-3 (LOCK) C-27 4 Change PWB-M

• Code: E556
• Description: Cooling Fan Motor 2's failure to turn
  - The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Causes: • Cooling Fan Motor/2 (M22) • Mechanical Control Board (PWB-M)
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 M22 operation check - - 4 Change PWB-M