43856301TH Rev.3 113 /Oki Data CONFIDENTIAL 5. Maintenance Menu5.3.3 Functions of keys at power onFunctions of the respective keys when the printer power is turned on are displayed below.Each of the following keys becomes valid if the key is kept pressed until "RAM CHECK" isdisplayed in the upper row of LCD and the several asterisk (*) marks are displayed in thelower row.(1) MENU+ key & MENU- key & ENTER keyThe printer starts up in the CU program upgrade mode. If the printer starts up inthis mode, the network does not function.(2) BACK key & ONLINE key & CANCEL keyThe object that is added by the download mode is not started but the CUprogram is started up.(3) MENU+ key & MENU- key & HELP keyThe system maintenance menu is started up.(4) MENU+ key & MENU- key & ENTER keyThe printer starts up in the mode that sets the printer in the on-line mode all thetime by ignoring the warning/error. (Factory assistance function)(5) ONLINE keyThe printer starts up in the dedicated mode in which the objects such asnetwork or USB is going to be downloaded.(6) ENTER keyThe Admin menu is started up.