Please, i need service manual for Toshiba Aplio 500

Hello Techs. I'm in desperate needing of Toshiba Aplio 500's service manual. Any help would be extremely appreciated. We encountered an issue where the secondary screen, despite being detected by windows (marked with number 2 during the screen detection), doesn't work with APLIO interface & software. We had to replace the VGA because of a burnt DVI port (Zotac Geforce 440 replaced wit Zotac Geforce 630: same board rebranded, same drivers, same Graphics Processing Unit) Has anyone ever fixed or encountered this issue before? Thanks in Advance