Dell Latitude 7220 Service Manual page 56

Steps
1. Insert the DC-in port and micro serial port into the slot on the chassis.
2. Replace the (M2x5) screw that secures the DC-in port and serial port to the system chassis and align the rubber grommet to slide in
the channel .
3. Align the metal brackets that secure the ports on the system chassis.
4. Replace the four (M2x5) screws and two (M1.6x5) screws that secure the metal bracket to the system chassis.
5. Connect the serial port cable into the connector.
6. Close the latch to secure the serial port cable to the system board.
7. Connect the DC-in port cable to the system board and replace the (M2x5) screw that secures the system board to the system
chassis.
Next steps
1. Install the display assembly.
2. Install the batteries.
3. Follow the procedure in
56 Removing and installing components
after working inside your tablet.