– 677 –CHAPTER 6 Routine Maintenance Procedure2.2.1 Check the Temperature and Relative Humidity in the Switch Room(1) Temperature check in the switch room.• Check whether the room temperature is within the range of 5°C (41°F) to 30°C (86°F).(2) Check the humidity in the room.• Check whether the relative humidity in the room is within the 15% to 65% range.(3) If the temperature or the humidity goes beyond the suitable, adjust the air conditioner.2.2.2 Check the Operating Status of PCPro(1) Check PCPro.(a) Turn ON PCPro.(b) Confirm that the menu appears on the screen.(c) Confirm that Login is available.(2) System messages are automatically stored in HD of PCPro for output.(a) Keep the power of PCPro to ON. Control the brightness of the display when it is not used.2.2.3 Check To See If a System Message Indicating a Fault is Displayed(1) Intentionally, cause the system messages to be displayed.(2) When a system message is displayed.(a) If the system message indicates a fault, diagnose the fault, and perform fault recovery.(3) Check the results of routine diagnosis.(a) System Message [7-O] indicates that the system is normal.(b) System message [7-P] indicates that the system is abnormal. Perform fault recovery.(4) When the system is operating normally or after a fault is restored.(a) Use RALM command to clear the alarm indication and registered system message.
