SONY HCD-GZX88D not turnig on: Protect EOS

Hi. 

i have SONY - MODEL NO. HCD-GZX88D (SERIAL NO. 3503103) audio system
However, once switch on the system, a message is displaying äs "Protect EOS"
and the system automatically switching-off 

How to fix this issue, 

Please advise...

Ujith Fernando..