Yamaha PSR -9000

[vyrmas]

Hello, does Yamaha  PSR-9000 has battery (maybe need to change , but how to find) , because when I do some settings , when I turn off my Yamaha PSR-9000 and after this turn on , there are no my seetings , I find some default settings
Thank You

[travlin-easy]

Yes, it has a battery, which is mounted on the motherboard. Not easy to change.

Gary

[vyrmas]

Thank You , I have PSR -9000 Service manual , but I can't find battery  on boards in drawings

[vyrmas]

Hello . please help me , because when I turn off PSR 9000 , next time when turn on need to do all settings , because keyboard forget all settings L:(