Dell Latitude 7400 Service Manual page 36

2. Place the heatsink fan assembly in the computer [1].
3. Replace the two (M2x3) screws in sequence (2 > 1) on fan case and four (M2x3) screws in sequence (4 > 3 > 2 > 1) on the heatsink
fan assembly [1].
4. Connect the fan cable to the system board [2].
1. Install the WWAN card.
2. Install the battery.
3. Install the base cover.
4. Follow the procedure after working inside your
36 Removing and installing components
computer.