Welcome to AVS Forum.
While the occasion might not offer much to be cheerful about, if you bought the JVC from a Authorized JVC Dealer, JVC will honor the lamp's warranty for the full term of the Projector's warranty.
The issue you both relate is indeed a symptom of lamp failure. No need to send in the unit.
On a note of lessor joy, between the 3- X3s I've installed, they have ran through a total of 8 lamps in just over 18 months. One has had a 4x replacement. Usually, JVC requests a Photo of the lamp's "condition", and you must send the old one back after you receive the replacement or that's the end of their replacement policy for you.
However, it's now been over 4 months since I have received the last pleading call from a distraught End User....so the "supposedly better" lamps seem to be doing their job. For the present. But just the same, none have over 5-600 hours accrued since their last replacement so as far as I'm concerned the Jury is still out, and the Noose is still hanging from the nearest Oak.