Toilet not filling with water

[Apalinto]

Hello to the group. Pulled into a relatively new RV Park in Paso Robles wine country today. Very Nice. Our 5th wheel is a 2019 Cougar 315RLS. Pull in today, got hooked up and my toilet will not fill with water. There is barely a tiny
trickle. It is a standard Dometic Model 310 Gravity flush unit and up until now has worked well.Trouble shooting guide says the inlet water line screen could be plugged but I'm not sure where that is. Has anyone had a similar experience? Appreciate any help. All other faucets are functioning normally and I'm running right around 50 psi regulated water pressure.

[Jacko]

This screen may be plugged..see picture

[chuckster57]

The screen your looking for is in the fitting where the water line connects. Make sure the water is OFF and the pressure is relieved. Just disconnect from city water or turn off the pump, then open the bathroom faucet to release pressure. You’ll still get some water dripping when you take off the line at the toilet. It’s in the back of the toilet at the bottom.

[Apalinto]

Wow Jacko and Chuckster! Thanks so much for the assist on the Dometic Toilet. To begin with the screen was so clogged that I couldn't even see it! I unloaded a lot of crunchy white plastic that had built up, I was amazed how clogged up it was! Took my time and removed all the debris, replaced valve and reinstalled set screw and we are flushing! It flushes better than it did when we first picked it up. One note is that lower flange snapped off despite considerable pressure. Plus the helpful diagram showed 2 screws and I only had one. To be safe, I am going to order a new assembly to have as backup. With COVID19 we are happier using our own toilet so me and the wife thank you both! Cheers!