• Code: E704
• Description: Optional Cassette2 Elevator failure
  - The Lift-Up Sensor is not blocked even after the lapse of a given period of time after the lifting motion has been started.
• Causes: • Lift-up Sensor (PC7-PC) • Lift-up Sensor (PC7-PC) • Control Board (PWB-Z-PC)
• Remedy: 1 Check the M3-PC connector for proper connection and correct as necessary. - - 2 Check the connector of M3-PC for proper drive coupling and correct as necessary. - - 3 PC7-PC I/O check, Sensor check PWB-Z PJ6Z PC-3 (ON) PWB-Z PJ4Z PC-4 to 5 V-21 to 22 4 M3-PC operation check Q-24 5 Change PWB-Z-PC.

• Code: E900
• Description: Flash ROM write error
  - Flash ROM writing is found faulty during a check.
• Causes: Mechanical Control Board (PWB-M)
• Remedy: 1 Change PWB-M. - - 2 Contact the service support section counter since the error is beyond restoration in the field.

• Code: E901
• Description: RTC failure
  - The correct access to the RTC Board is failed during access.
• Causes: • RTC Board (PWB-R) • Mechanical Control Board (PWB-M)
• Remedy: 1 Check the connector for proper connection and correct as necessary. - - 2 Change PWB-R - - 3 Change PWB-M

• Code: E998
• Description: Engine communication error
  - The correct access between the Controller Board and the Mechanical Control Board are failed during access.
• Causes: • Controller Board (PWB-P) • Mechanical Control Board (PWB-M)
• Remedy: 1 Check the PWB-P connector for proper connection and correct as necessary. - - 2 Check the PWB-M connector for proper connection and correct as necessary. 3 Change PWB-P - - 4 Change PWB-M