It will be shortly after you use Force Grip to move a lift upwards to get onto the higher walkway.

Holocron #5 Experience Point: It is an unmissable holocron. Then once you drop down the vent and proceed down the hallway with the force fields you brought down it will be in the next room at the center of the console in the room. It will be shortly after the area with the 2 fans that you have to use your Force Grip to stop. Holocron #4 Experience Point: It is an unmissable holocron. When you come across the circular walkway, it will be on a platform sticking out from the middle of it. Holocron #3 Green Bacta Tank: Just after Holocron #2. It will be right after you Dash through the 3 flames in the hallway at the end of it. It is another unmissable holocron, meaning it will be hard to actually miss this one. Holocron #2 Saber Crystal: Just after Holocron #1. It will be right above where you need to Force Grip the platform to get across the gap. Holocron #1 Saber Crystal: Near the beginning.

The force unleashed 2 saber crystals