Bizhub C652.. Scan & Box bottons are disabled

Hi,
one of client's MFP ,Scan & Box buttons are disabled.I checked the HDD in service mode but it was installed, even Formatted it physically(took long time to complete!) and logically ,in case of any issues with HDD,after that ,from Administrator panel create and define some new boxes ,so almost sure that the hard disk is ok.
Also searched from the web admin page to find if scan is disabled , but couldn't find any clear option that defines such functionality! comparing admin page to some others ,noticed that scan accelerator is missing(Picture attached) ,so is that kit necessary for scanning or its optional.
In service mode ..optional board status , there was just Fax Circuit 1&2 , JPEG,and DSC1 & 2 and nothing regarding Scan.

Any Idea about this issue..