Marantz CD5005 Service Manual page 31

(9) If the software is updated successfully, "OK." appears. Click OK.
Disconnect mains cord from the unit, and then disconnect FFC of connection JIG from the unit.
(10) Initializing the unit. Remove the AC plug.
Press the "OPEN/CLOSE" and " 3 " buttons simultaneously while inserting the AC plug to turn the power on.
(11) After updating the firmware, check the version.
Press the "OPEN/CLOSE" and " 1 " buttons simultaneously while inserting the AC plug to turn the power on.
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