Yamaha LS9 (32CH) - Fader replacement

I changed only the first 16 faders due to an error given while testing them. Isn't the case for the other 16 (17-32).
The supplier here only had non dust-proof faders. I tried to unstick and restick the dust proof film but I was a tedious task because the re-sticking failed....

[@ozwideaudio6312]

can you please tell me how you got into this test screen?

[@Molleras]

While pressing whichever three SEL buttons, turn on the CONSOLE. See the text at 5:58 of this video.