Yamaha Clavinova CSP-150 won't boot test mode

Synth Repair
1

Yamaha Clavinova CSP-150 made in 2019.

I try to start it in test mode pressing c#2 f2 and g#2 with the power button, but it just flashes the blue “entering test mode” light and registers the c,f and g keys that were used to boot it into test mode. It won’t finish booting test mode or register any key presses or run any tests. The only way to exit this mode is to press the power button.

Example:
https://imgur.com/eZ3yxzJ

Does anything need to be plugged in to run yamaha test mode? Thanks

2

All I found was this;

Connecting to a computer

test mode
https://forum.pianoworld.com/ubbthreads.php/ubb/printthread/Board/6/main/240857/type/thread.html

cant find anything on how the test mode works.

try asking here
https://usa.yamaha.com/support/index.html

3

I know the guy who made that post on pianoworld.com.

I could never follow his advice because he’s a big, fat, no-nothing. And I know that for a fact. Source: I made that pianoworld post