Service manual:
http://www.dometic.com/QBank/EPiServ...nual_17606.pdf
I couldn't find it in the service manual but only quickly looked through it.
Maybe one of these videos will help:
[youtube:dg79repa]b2zioJ7XwmM[/youtube:dg79repa]
[youtube:dg79repa]aebl5HJImKA[/youtube:dg79repa]
(edit: couldn't not could)