The seven-man, five-woman panel began discussing the case Friday morning.
The jury received it Thursday after spirited closing arguments by prosecutors and defense attorneys.
Prosecutor David Walgren urged the group to convict Dr. Conrad Murray, arguing the Houston-based cardiologist was reckless with Jackson's life and left his children without a father. Defense attorney Ed Chernoff argued prosecutors hadn't proved their case and were trying to convict Murray for the actions of Jackson.
Murray faces a possible sentence ranging from probation to four years behind bars and the loss of his medical license if convicted.