276.1. Built-in Memory Self Check Execution (HC-X920M only)Touch the [ 3 ] of LCD, select Built-in memory self check execution.Operation specificationsIndication contents• Built-in memory self check result displayDisplay the Built-in memory self check execution.Displays other than “OK” are abnormalities of Built-in memory.Touch the [ BAK ] of LCD to end the service mode, and then POWER OFF.6.2. Lock Search History IndicationTouch the [ 4 ] of LCD, select Lock search history indication.Operation specificationsIndication contents• Lock search history indicationDisplay the camera system error cord for three histories saved in EEPROM.• The error cord contents which are displayedTouch the [ BAK ] of LCD to end the service mode, and then POWER OFF.Error code Function51 Focus control is abnormal52 Zoom control is abnormal53 OIS lens control is abnormal54 Zoom control is abnormal (2)71 Lens cover open/close is abnormal72 Cooling fan is abnormal73 High temperature is abnormal