Marantz SR-880mkII User Guid - Page 21

GENERAL MALFUNCTION If the equipment malfunctions, this may be because an electrostatic discharge or AC line interference has corrupted the information in the equipment memory circuits. Therefore:• - disconnect the plug from the AC line supply - after waiting at least thiee minutes, reconnect the plug to the AC line supply - re-attempt to operate the equipment ERROR MESSAGES When the display indicates some error messages (e.g. ERROR -), unplug the power cable immediately. Contact your dealer, nearest Marantz distributor or the Marantz service center in your area. HOW TO RESET THE UNIT Should the operation or display seem to be abnormal, reset the unit with the following procedure. On the main unit is turned on, press and hold the MEMO, CLEAR and TUNING UP buttons simultaneously. Remember that the procedure will reset the settings of the function selector, Surround mode, delay time, TUNER PRESET etc., to their initial settings. Memory backup • In case a power outage occurs or the power cord is accidentally unplugged, the SIR880mkII is equipped with a backup function to preventmemory data such as the preset memory from being erased. The memory functions are backed up for up to about one week.