Marantz SR4320 User Manual page 23

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 three minutes, reconnect the plug to the AC
line supply
– re-attempt to operate the equipment
Memory backup
• In case a power outage occurs or the power cord is accidentally
unplugged, the SR4320 is equipped with a backup function to
prevent memory data such as the preset memory from being
erased.
The memory functions are backed up for up to about one week.
Note:
First of all keep SR4320 Standby or Powered-on more than 6 hours,
to sufficient time for memory hack up.
HOW TO RESET THE UNIT
Should the operation or display seem to be abnormal, reset the unit
with the following procedure.
Press the POWER button to set SR4320 in standby mode, then press
and hold the F/P button until SR4320 is turned on.
Remember that the procedure will reset the settings of the function
selector, tuner preset etc., to their initial settings.
18