OfficeServ 7200 Installation Manual© SAMSUNG Electronics Co., Ltd. 8-78.4.5 Checking if the fan is in normal operationWhen the fan connected to the system is not operating, the 48 DC power and the systemoperation will be turned off to prevent the system overheating.This function is set in the program to manage sending the internal alarm notification in 24hours.The function can be set with following methods.1) Designate SYSALM key in the MMC722 and the designated key will be set in themanager’s digital phone.2) When the alarm is generated in the phone, the cause of alarm can be checked in theMMC851.The MJA08 message generation means an abnormal fan operation, and the system willbe turned off after 24 hours.When this alarm occurs, the fan must be replaced immediately.8.4.6 Using the Reset ButtonThe system has one reset buttons. It is the ‘RST’ button on the front panel.The reset button has the following functions. If the reset button is pressed, the system is restarted while the power is still beingsupplied. At this time, if the user holds down the button for less than 7 seconds, the system isjust restarted. If the user presses the button for more than 7 seconds, all databaseinformation in the system is removed and the system is then restarted. To initialize the system, hold down the reset button for more than 7 seconds. Alldatabase information stored currently in the system is removed and the system is thenrestarted in its initial status. As a result of this, the reset button can be used for easyinitialization of the system.8.4.7 Checking the System IP AddressTo use the IP Phone and SIP Trunk, and other functions in this system, the system IPaddress must be set. Therefore, when installing the system, the IP address must be checkedusing a PC or digital phone.