Cameo Singer Lawsuit Is the Code Word After Allegedly Trashing Home

2:00 PM PT -- Blackmon's rep says the allegations are false ... and he's looking forward to settling it in court.
front man Larry Blackmon trashed his Atlanta rental home and left it littered with dog poop ... according to a landlord who's going after the singer for back rent and property damage.

Blackmon -- famous singer of the 80s hit "Word Up" -- is about to be sued by National Lender Services for $6K in unpaid rent.

A rep for NLS tells us they slapped him with eviction papers to get Blackmon to leave, and he finally cleared out at the beginning of July.

We're told Larry left the place covered with trash ... along with ruined carpets, holes in walls, damaged appliances ... and dog feces all over the deck.

NLS estimates the damage at $10K ... and they plan on suing him for that too. So far, we haven't heard back from Blackmon's camp.

Now, all you sucker DJs who think you're fly ...