Justin Bieber -- Beverly Hills Cops School Condo Residents on Bieber Trouble

The Beverly Hills police paid a visit to the condo in which Justin Bieber is living … trying to calm down residents who are in meltdown mode because of the singer's antics.

Law enforcement sources tell TMZ ... the officers were there to do some "community policing" and spoke with various homeowners in the building ... and the conversation was all about the Biebs. We're told the main topic was noise.

As TMZ first reported, Bieber's neighbors called police six times in one weekend ... four of them to specifically complain about loud partying courtesy of Bieber and his crew.

We're told the officers also spoke about basic security measures and how to best handle the increased traffic in the neighborhood from both fans and tour buses.